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15/12/2017

ARC Weather Forecast 15 December

ARC Weather Forecast15 December 2017 05:05Z.Zone RR: Conditions remain slightly favorable for transit over next 48 hours as fresh NE that may gust into the middle to upper 20s continue thru 17th. Swells will remain at 6-8ft and will remain long in period.Zone QQ: Conditions will slightly increase over the next 48 hours as moderate to fresh NE that may gust into middle 20s freshen into fresh NE that may gust into upper 20s at times by tomorrow morning. Swells will slightly build to 6-8ft by tomorrow evening and remain long in period.Zone PP: Conditions will increase over the next 48 hours as moderate NE freshen into fresh NE that may gust into upper 20s at times by tomorrow evening and continue into morning of 17th. Swells will gradually build to 7-9ft by tomorrow evening and continue. read more...


13/12/2017

ARC Weather 13 December 05:05Z

Atlantic Rally for Cruisers (ARC) weather13/12/2017Prepared: December 13 05:13zWeak ridging extending SW across 20N/50W and towards Lesser Antilles will vary little in strength through 15th. A cold front extending SW across the Turks and Caicos towards Jamaica will move SE into Hispaniola tonight, then stall and weaken thru tomorrow. Persistent ridging across the zones will result in continuous moderate to fresh E-NE'ly trade winds. These breezes may be strong at times (gusting to 25+ knots at times), especially across zone QQ and PP. As E-NE'ly swell lowers across zones QQ and PP, SEA will build gradually thru next few days in zone RR accordingly, as swell moves from ENE to WSW into the zone. RR :13/06 T + 0: ENE-ESE 09-14KTS. SEA 2-3 SWLL NNE-ENE 2-5FT (10SEC). PARTLY CLDY. CRRNTS SE. read more...


11/12/2017

ARC Weather 11 December 05:05Z

ARC WeatherDecember 11 05:02zTrough of low pressure now located from 17N/55W N to 26N, dissipate thru 13th. Ridge of high pressure located from 15N/45W NE to 35N/27W, will move W and extend from 20N/55W ENE to Azores by later on 13th. Conclusion: E-SE breezes will remain generally light to moderate across both zones thru midday tomorrow as the trough lingers, with swell also lowering further west (mainly in zone RR). By tomorrow evening and into 13th, the trough will dissipate and breezes will strengthen slightly across both zones (with the highest winds in zone QQ). While swells remain consistent across zone RR, longer swell will begin to mix with shorter period E swell by tomorrow and thru 13th in zone QQ. RR :11/06 T + 0: ENE-ESE 10-15KTS. SEA 2-3 SWLL NNE-ENE 4-7FT (9SEC).. read more...


10/12/2017

ARC Weather 10 December 05:05Z

ARC Weather10 December 05:05ZDecember 10 05:02zHigh pressure is centered south of Azores near 35N/30W, with a ridge extending S across Cape Verde Islands towards 10N, and SW towards Leeward Islands. High will settle near 35N/35W tonight, then shift back E over Azores on 11th thru 14th while persisting the same ridge. A broad Low centered near 25N/40W, will weaken into a trough while drifting W towards 50W thru tomorrow night, weakening and dissipating into 12th. Conclusion: Across both zones, E-NE thru today will tend to become more SE thru the forecast period while also weakening slightly, thanks to the trough moving off to the north. Mainly long period N-NE swell will tend to become shorter in period thru the next few days. Across zone QQ, short period E swell will begin to mix in by. read more...


09/12/2017

ARC Weather 09 December 05:05Z

ARC Weather December 09 05:56z.Broad ridge of high pressure currently extends SW from 39N/44W to Jamaica will shift E and extend from Azores to Dominica by 13th. A "cut off" area of low pressure currently centered near 26N/37W will shift SW to near 19N/56W by 11th and weaken by 12th. Conclusion: Zone PP: Conditions will slowly improve over next 48 hours as moderate to fresh NE that may gust into the low to middle 20s continue thru 11th. However, swell will gradually lower to 5-7ft by 11th. Zone QQ: Conditions will improve over next 48 hours as moderate to fresh NE that may gust into the middle 20s ease into gentle to moderate NE breezes by tomorrow evening and continue into 11th. Swell will gradually lower to 5-7ft by 11th and will remain long in period. Zone RR: Conditions will. read more...


08/12/2017

ARC WX 08 Dec

TitleDate   Weather Routing Inc. is Proud to be the Official Weather Provider for the Atlantic Rally for Cruisers (ARC)Prepared: December 08 05:31zFM: Weather Routing Inc. (WRI)Synopsis: Good morning. A broad ridge of high pressure that currently extends SW'ward from 37N/48W to Puerto Rico will continue to persist through the 10th before shifting E'ward and extending from the Azores to 15N/50W by the 12th. A "cut off" area of low pressure is currently developing near 35N/38W and will drift SW'ward to near 31N/37W by the 09th and then will continue drifting SW'ward while weakening to near 20N/65W by the 12th. Conclusion: Zone PP: Conditions will improve over the next 48 hours as moderate to fresh NE'lys gradually ease into moderate NE'lys by the 10th. Swells will build to 8-10ft. read more...


07/12/2017

WX ARC 2017 07 DEC

Synopsis: Good morning. A broad ridge of high pressure that currently extends SW from 40N/55W to 17N/72W will move NE and extend from the Azores to Bermuda on the 10 and then continue to persist over the next several days thereafter. A "cut off" gale that is currently centered near 40N/42W will slowly weaken while drifting SSE to near 26N/39W by the 09.The low will then continue to slowly weaken while drifting SW to bear 24N/51W by the 11 and then dissipate by the 12.Conclusion:Zone PP: Conditions will increase over the next 48 hours as swells gradually build to 8-10ft by tomorrow evening and persist into the 09.Fortunately, these swells will remain long in period. Moderate to fresh NE breezes are expected to continue at this time and possibly produce gusts at times into the middle 20s. read more...


06/12/2017

WX ARC 2017 06 DEC

Synopsis:Good morning.A gale is currently centered near 38N/45W, and will gradually weaken into a low while moving E towards 38N/40W thru the 07.The low will continue to weaken while drifting SSE towards 25N/35W thru early 09.High pressure is currently centered near Bermuda, with ridging extending S across the Bahamas and into the E Caribbean. Ridging will persist thru tomorrow as the low shifts E towards 30N/60W and stalls. Thru the 08.this ridging will strengthen slightly.Conclusion:Zone II: The aforementioned gale and associated trough located just to the NW of this zone will result more variable conditions across this zone. Areas to the SW will tend to see more E-SE light breezes, whereas areas to the NW will see more NE-NW breezes by tomorrow and thru the 08 as the trough moves. read more...


06/12/2017

WX ARC PLUS 2017 06 DEC

Synopsis: Good morning. High pressure is currently centered near Bermuda, with ridging extending S across the Bahamas and into the E Caribbean. Ridging will persist thru tomorrow as the low shifts E towards 30N/60W and stalls. Thru the 08.this ridging will strengthen slightly.Conclusion: E-NE will gradually freshen thru the next few days as the aforementioned ridging persists, and becomes slightly stronger thru this time frame. Aside from wind driven seas, shorter period E-SE swell will mix with N-NE longer period sets by tonight, with this swell becoming dominant thru the 08 while continuing to build as well. Swell will be highest across E parts of the zone (though still mainly widespread).T=06 NOV 0600 UTCRR FORECAST: T+0:NE-E(45 - 90) 13-18 GUSTS 21KTS.SEAS 3-4 SWELLS E-SE 4-7FT MSTLY. read more...


05/12/2017

WX ARC 2017 05 DEC

Synopsis: Good morning. An area of ridging is located over the Canaries extending SW across about 15N/45W which is expected to persist thru the 07 while gradually weakening as the high drifts ENE across Iberia and broadens. Another high pressure system is located offshore the NE Mid Atlantic Coast with ridging extending SE across 15N/50W which is expected to persist while strengthening thru the 07 as the high moves ESE and strengthens. A large gale is located near 35N/55W with associated cold front extending SE across 20N/55W. This gale is expected to move ENE while strengthening thru the evening of the 06, then will move SSE toward 25N/35W thru the 09 while weakening.Conclusion:Zone OO: Conditions will improve over the next 48 hours as moderate to fresh NE ease into gentle to moderate. read more...


05/12/2017

WX ARC PLUS 2017 05 DEC

Synopsis: Good morning. A high pressure system is located offshore the NE Mid Atlantic Coast with ridging extending SE across 15N/50W which is expected to persist while strengthening thru the 07 as the high moves ESE and strengthens. A large gale is located near 35N/55W with associated cold front extending SE across 20N/55W. This gale is expected to move ENE while strengthening thru the evening of the 06, then will move SSE toward 25N/35W thru the 09 while weakening.Conclusion:Zone RR: Conditions will increase over the next 48 hours as swells build to 6-8ft by tomorrow afternoon but fortunately will remain long in period.Moderate to fresh NE are expected to continue during this time. Winds may be locally higher in between islands due to the localized funneling of winds.T = 05 DEC 0600. read more...


03/12/2017

WX ARC 2017 03 DEC

Synopsis: Good morning. An area of low pressure that is currently centered near 30N/51W will strengthen into a gale while moving NE to over the North Sea by the 07 will continue NE to over Scandinavia by the 08 . A cold front that is associated with the aforementioned gale is forecast to extend SW from 51N/15W to 47N/30W on the 06 will continue to move E and extend from 60N/12E to Cape Finesterre on the 07 and then continue E and extend from E Scandinavia to the Balearics by the 08 . A broad ridge of high pressure that currently extends SW from the Canary Islands thru 17N/59W will continue to persist over the next several days. A second area of low pressure that is currently centered near 38N/55W will strengthen into a gale while moving SE to near 36N/46W by the 06 and then drift NE to. read more...


03/12/2017

WX ARC PLUS 2017 03 DEC

Synopsis: Good morning. An area of low pressure that is currently centered near 30N/51W will strengthen into a gale while moving NE to over the North Sea by the 07 will continue NE to over Scandinavia by the 08. A cold front that is associated with the aforementioned gale is forecast to extend SW from 51N/15W to 47N/30W on the 06 will continue to move E and extend from 60N/12E to Cape Finesterre on the 07 and then continue E and extend from E Scandinavia to the Balearics by the 08 . A broad ridge of high pressure that currently extends SW from the Canary Islands thru 17N/59W will continue to persist over the next several days. A second area of low pressure that is currently centered near 38N/55W will strengthen into a gale while moving SE to near 36N/46W by the 06 and then drift NE to. read more...


01/12/2017

WX ARC 2017 01 DEC

Synopsis: Good morning. High pressure near 24N/25W with a ridge S to the Cape Verde Islands will remain nearly stationary thru the 04. A gale near 36N/35W with a cold front SW to 22N/45W will track NE to near 42N/34W tomorrow afternoon. Another low will develop near 29N/54W tomorrow morning and will move NE while strengthening to near 34N/45W by the morning of the 03. A cold front will extend SW to the north of Puerto Rico by the morning of the 03 before lifting NE thru the 04. Conclusion: Zone DD: With the aforementioned gale passing to the north and weak ridging persisting to the south, generally stronger and more SW breezes will be found across the N part of the zone today, lighter and more E across S areas. By tomorrow and thru the 03, general S will be expected (stronger to the NW. read more...


01/12/2017

WX ARC PLUS 2017 01 DEC

Synopsis: Good morning. High pressure near 26N/51W will move E and merge with a ridge over the Central Atlantic tomorrow morning. A trough of low pressure over the Turks/Caicos NE to a low near 27N/67W will track NE to near 29N/54W by tomorrow morning. This low will strengthen into a gale near 34N/45W by the morning of the 03. A cold front will extend SW from the gale to the north of Puerto Rico on the 03 before lifting NE thru the 04. Conclusion: Zone QQ: Persistent trade winds are expected over the next several days with ridging continuing. E-SE shorter period swell will mix with N long period swell thru today, then N-NE swell will take over and build on the 02/03. Zone RR: E across this zone will become more E-SE and decrease tomorrow and thru much of the 03 thanks to the. read more...


30/11/2017

WX ARC 2017 30 Nov

Synopsis: Good morning. A weak ridge of high pressure extends from the Canaries SW towards the Cape Verde Islands, and W towards about 50W. This ridging will change little thru today, then strengthen slightly thru the 02. A gale is currently centered near about 38N/40W. This gale will move SE towards 35N/35W thru tonight, then broadening and weakening while meandering to the NW of the Azores thru the 02. Tomorrow evening, low pressure will begin to form near 28N/60W, and will strengthen while moving NE across 30N/55W thru the evening of the 02. Conclusion: Zone DD: W will persist across this zone thru today, then tend to become more variable from the East by tomorrow and thru the 02 with the gale moving off to the NE. Across S parts of the zone, winds will tend more E tomorrow/02, and. read more...


30/11/2017

WX ARC PLUS 2017 30 Nov

Synopsis: Good morning. Weak ridging currently exists between about 10-25N, and from the Lesser Antilles E towards 40W. Ridging will remain broad/weak thru the 02. A broad trough extending from Puerto Rico/Hispaniola NNE towards about 30N/65W will shift E thru tomorrow morning, with a weak low forming near 25N/65W. This low will strengthen while moving NE across 30N/55W thru the evening of the 02. Conclusion: A combination of weak ridging across E areas, and weak "troughing" across W areas will result in persistent E-SE thru the next few days. Areas farther east (particularly in zone PP) will see mainly longer period N-NE swell, whereas areas farther west will see more mixing of this swell with shorter period SE sets. This will especially be the case across zone RR. The highest swell. read more...


29/11/2017

WX ARC 2017 29 Nov

Synopsis: Good morning. High pressure centered near 55N/23W will extend a strong ridge S towards about 35N. A much weaker part of this ridge will build S across the Canary Islands and SSW along the coast of Morocco/Western Sahara thru the 01, extending farther S and W towards 25N/35W thru the 02 and into the 03 . A thermal trough of low pressure extending N along the W coast of Africa (east of the Cape Verdes) will persist over the next several days. Low pressure is currently centered near 40N/40W, and will strengthen into a gale while moving SSE towards 35N/35W thru tomorrow night. The gale will then broaden and meander N towards 40N/35W thru the 02 , then slowly weakening and dissipating into the 03 . Early 03, another low will begin to form near 30N/50W and quickly move ENE towards. read more...


29/11/2017

WX ARC PLUS 2017 29 Nov

Synopsis: Good morning. A ridge of high pressure currently extend S across the Bahamas and towards the E Caribbean, and SE towards about 15N/45W. Ridging will tend to weaken thru today, then remain weak thru the 01 . By tomorrow morning, a trough of low pressure will begin to form, extending from the E Caribbean NNE across the Leeward Islands towards about 25N/65W. A weak area of low pressure will develop near this area, drifting E towards 25N/55W thru the 01 , then continuing NE towards about 33N/52W thru the 02 . Conclusion: Generally moderate E-NE are expected to persist across the zones thru the next few days (fresh at times) with ridging persisting.Breezes will tend to weaken marginally by the 30/01 as the aforementioned trough develops (while also shifting more E-SE , especially in. read more...


28/11/2017

WX ARC 2017 28 Nov

Synopsis: Good morning. Low pressure currently centered southeast of Santa Maria will continue to weaken while sliding E across the Iberian Peninsula thru tomorrow. Generally weak pressure gradients are expected to persist south of this gale from about 30N S towards the Cape Verdes thru today. On the 29, a strong high will be centered near 55N/23W, with a ridge extending S across the Balearics towards about 35N. This ridge will gradually expand S towards the Balearics and NW Africa thru the 01, then persist thru the 03 while remaining weak. A weak thermal trough along the coast of W Africa (west of the Cape Verdes) will remain weak over the next several days. On the 01, a small gale will be centered near 35N/35W, and will move NE over the Azores thru the 02.Conclusion: Zone BB:. read more...


28/11/2017

WX ARC PLUS 2017 28 Nov

Synopsis: Good morning. Generally moderate/weak ridging currently exists between about 25-10N, and from about the Leeward Islands E towards 40W. This ridging will strengthen slightly thru today, then persist thru the 30.Conclusion: Generally light to moderate E-NE will persist across the zones thru the next few days as ridging remains generally weak. Breezes will be generally uniform in strength, marginally stronger across more S parts of the zones. Seas will consist of NE long period swell, and some light wind driven E sets. T=28 NOV 0600 UTCPP FORECAST: T + 0 :NE-E(45 - 90) 13-18KTS. SEAS 2-3 SWELLS N-NE 4-7FT PRTLY CLOUDY. ISLTD SHWRS* E @ 0.3KTS. T + 12 :NE-E(45 - 90) 13-18KTS. SEAS 2-3 SWELLS N-NE 4-7FT PRTLY CLOUDY. ISLTD SHWRS* E @ 0.6KTS. T + 24 :NE-E(45 - 90) 13-18KTS. SEAS 2-3. read more...


27/11/2017

WX ARC 2017 27 Nov

Synopsis: Good morning. A large gale is located near 35N/25W with associated cold front extending SW to 23N/40W. This gale will weaken while moving NE to near 37N/20W by the morning of the 29 before dissipating shortly thereafter. The cold front will move NE thru the 28 before beginning to drift ESE thru the 30, extending from the Alboran Sea SW thru Morocco by the 30/06Z.Conclusion: Zone BB: Conditions will ease over the next 48 hours as moderate to fresh SW that may gust into the low to middle 20s continue thru the 29.Swells will lower to 3-5ft by the 29 and will remain long in period. Zone CC: Conditions will ease over the next 48 hours as moderate to fresh SW that may gust into the low to middle 20s continue thru the 29.Swells will lower to 4-6ft by the 29 and will remain long in. read more...


27/11/2017

WX ARC PLUS 2017 27 Nov

Synopsis: Good morning. A large gale is located near 35N/25W with associated cold front extending SW across 13N/40W. This gale and associated front will move NE while weakening thru the 28. A weaker area of high pressure is located near 25N/45W with ridging extending SW across the E Caribbean and SSE across 40W. Ridging is expected to persist thru the 29 while strengthening as the high moves ENE.Conclusion:Zone RR: Conditions will remain moderately favorable for transit thru out Zone RR over the next 48 hours as the gentle to moderate E-SE breezes freshen into moderate to fresh E-SE that may gust into the low to middle 20s at times. Winds may be locally higher at times in between islands due to the localized funneling of winds. Swells will remain between 3-6ft and will be long in. read more...


26/11/2017

WX ARC 2017 26 Nov

Synopsis: Good morning. A large gale is located near 30N/25W with associated cold front extending SW across 15N/40W which will race NE thru tomorrow morning and weakening. An area of high pressure is located near 25N/50W with associated ridging extending SE across 15N/45W and SW across the E BVIs. Ridging is expected to persist thru the 28th while strengthening slightly as the high moves little E. A thermal trough is located along the W coast of Morocco which is expected to persist thru at least the 28th while strengthening gradually. An area of high pressure is located near 25N/50W with associated ridging extending SE across 15N/30W and SW across the E BVIs. Ridging is expected to persist thru the 28th while strengthening slightly as the high moves little EConclusion: Zone AA:. read more...


26/11/2017

WX ARC PLUS 2017 26 Nov

Synopsis: Good morning. A large gale is located near 30N/25W with associated cold front extending SW across 15N/40W which will race NE thru tomorrow morning and weakening. An area of high pressure is located near 25N/50W with associated ridging extending SE across 15N/45W and SW across the E BVIs. Ridging is expected to persist thru the 28th while strengthening slightly as the high moves little E. Conclusion: Zone OO: Conditions will worsen over the next 48 hours across Zone OO as gentle to moderate NE breezes gradually freshen into moderate to fresh NE that may gust into the low to middle 20s at times. Swells will remain between 5-8ft and will be long in period. Zone PP: Conditions will worsen over the next 48 hours across Zone PP as gentle to moderate NE breezes gradually freshen into. read more...


25/11/2017

WX ARC 2017 25 Nov

Synopsis: Gibraltar to E Atlantic: Good morning. A gale near 31N/27W with a cold front SW to 17N/35W will move NE while weakening into a low to near 37N/20W by overnight the 27. The cold front will lift NE and extend from the low center SW to 20N/30W by afternoon the 27. The cold front will lift NE while weakening thru the 28. High pressure near 27N/43W with a ridge S to 15N on the 27 will move E to near 30N/35W on the morning of the 28.Conclusion:Zones BB, CC and DD: The main influence of conditions across these zones will continue to be the aforementioned gale. Across the zones, both wind and seas conditions will gradually begin to ease thru today and the remainder of the forecast period as the gale weakens and shifts NE'ward. Winds and seas will be highest across the E portion of zone. read more...


25/11/2017

WX ARC PLUS 2017 25 Nov

Synopsis: Good morning. A gale near 31N/27W will move Ne to near 37N/20W by overnight the 27. High pressure near 33N/44W with a ridge S to 20N will drift SW to near 25N/50W by tomorrow afternoon. The ridge will build S to near 15N tomorrow. The high will move E to near 25N/35W by the morning of the 28. Conclusion: With the gale mentioned above weakening, and some weak ridging building in across the area of concern, this will result in a marginal increase in E-NE trade winds across the zones. These breezes will tend to be slightly stronger across farther W zones, as these areas will be closer to the main high and experience a slightly stronger ridge. Long period N-NE swell from the same gale above will affect all of the zones, however areas farther to the east will tend to see higher sets. read more...


24/11/2017

WX ARC 2017 24 Nov

Synopsis: Good morning. A developing gale south of the Azores will strengthen as it moves E to the west of Madeira near 32N/23W by am/26, then slowly weakening as it moves to the north of Madeira near 37N/17W by am/28 where it will stall and continue to weaken thru the 29.Generally weak ridging currently extends from 35N S towards about 20N, and roughly between 55W to 40W. This ridging will tend to extend SW towards the E Caribbean tomorrow, followed by persisting thru the 26. This same ridging will also expand SE towards the Cape Verde Islands on the 26 and persist thru the 28 before beginning to strengthen on the 29. A thermal trough of low pressure extending from Senegal N along the coast of Mauritania will persist thru the next few days, varying little in intensity. Conclusion: Zone. read more...


24/11/2017

WX ARC PLUS 2017 24 Nov

Synopsis: Good morning. A developing gale south of the Azores will strengthen as it moves E to the west of Madeira near 32N/23W by am/26, then slowly weakening as it moves to the north of Madeira near 37N/17W by am/28 where it will stall and continue to weaken thru the 29.Generally weak ridging currently extends from 35N S towards about 20N, and roughly between 55W to 40W. This ridging will tend to extend SW towards the E Caribbean tomorrow, followed by persisting thru the 26. This same ridging will also expand SE towards the Cape Verde Islands on the 26 and persist thru the 28th.Conclusion: Conditions will not vary a whole lot across the zones of concern over the next few days as ridging remains generally weak and the aforementioned gale stays well to the NE of the areas. The main. read more...


22/11/2017

WX ARC PLUS 2017 22 Nov

Synopsis: Good morning. Low pressure near 34N/19W with a cold front SW to 22N/25W will lift NE thru tonight. Low pressure near 23N/41W with a trough SW to 19N/42W will move SW to n ear 19N/45W by tomorrow afternoon before weakening tomorrow evening. No tropical development is expected. High pressure near 37N/56W with a ridge SE to 20N/45W will move SE to near 34N/41W by evening of the 24. The ridge will extend S to 15N on the 24. Conclusion: Zone OO: Conditions will remain favorable for transit across Zone OO over the next 48 hours as gentle to moderate NE will continue thru the morning of the 24. Swells will remain between 4-6ft and will be long in period. Zone PP: Conditions will remain favorable for transit across Zone PP over the next 48 hours as moderate to fresh NE will continue. read more...


22/11/2017

WX ARC 2017 22 Nov

Synopsis: Good morning. A cold front extends S along the W Iberian Coast and SW towards NW of the Canaries, with an area of low pressure located along this front over about Madeira. This front and associated low will continue to weaken while moving E into Iberia thru tomorrow. Tomorrow morning, another developing gale will be located near about 38N/35W, strengthening while moving SE towards about 32N/26W thru midday 24.This gale will then slowly weaken while meandering E towards Madeira thru the evening of the 26. On the evening of the 26, high pressure located near 43N/48W will extend a weak ridge S towards about 30N/55W, and an even weaker ridge SE towards 20N/30W towards the Cape Verdes. This ridge will persist thru the 27, changing rather little in strength. On the 26, a "cut off". read more...


21/11/2017

WX ARC PLUS 2017 21 Nov

WX ARC PLUS 2017  21 NovSynopsis: Good morning. A cold front extending from 25N/35W SW to 20N/55W will shift S while weakening thru tomorrow. A trough of low pressure will develop along 40W from 25N S to 15N tomorrow afternoon. This trough will move Wwhile weakening thru the 24.High pressure will build E to near 37N/58W with a ridge SE to 20N/50W tomorrow morning. The high will move SE to near 30N/43W with a ridge S to 15N by the 23.Conclusion: Zone NN: Conditions will remain generally benign across much of this zone thru the forecast period. This will be due to weak pressure gradients as the zone remains south of the aforementioned front and any disturbed weather.Light/moderate E and N-NW swell (mixing with some E-SE sets at times, especially in the S-SE part of the zone) are. read more...


21/11/2017

WX ARC 2017 21 Nov

WX ARC 2107 21 novSynopsis: Good morning. A ridge of high pressure over the E Canary Islands will lift NE the rest of today. Low pressure near 31N/27W with a cold front SW to 20N/45W will track ESE to near 30N/21W while weakening thru tomorrow night. The cold front will extend from the low to near 20N/45W by tomorrow night. The low will drift west of the Canary Islands on the 22 before moving NE and merging with a cold front on the 23. The cold front will move E while weakening thru the 23. A gale near 39N/32W on the morning of the 23 will track SE to near 33N/27W by the morning of the 24. An associated cold front will extend from the gale SW to near 23N/40W on the morning of the 24.Conclusion:Zone AA: Conditions will remain generally favorable for transit over the next48 hours. read more...


16/12/2016

ARC Weather Forecast 16/12/2016

ARC Weather Forecast16/12/2016Synopsis: HIGH PRESSURE ridging centered over the Azores, extends from W Ireland, SW across the Azores/Canaries/ and Cape Verde Islands across the Central Atlantic towards the Leeward Islands. This area of HIGH PRESSURE ridging is forecast to move NE towards France through 18/12 while broadening, as a COLD FRONT moves towards the Azores during this time.A GALE centered over N Nova Scotia, extends from N Quebec, S towards Bermuda. Along this gale extends a COLD FRONT from the N Bahamas, NE towards 45N/35W. This front is forecast to move NE across the Azores through 19/12, while weakening, extending from Ireland, SW across the Azores as the GALE move NE towards Iceland while becoming complex.In the wake of the cold front, HIGH PRESSURE ridging that is forecast. read more...


15/12/2016

ARC Weather Forecast 15/12/2016

ARC Weather Forecast15/12/2016Synopsis: Relatively weak ridging from mid-ocean high pressure covers waters from the S Bahamas E to the NE Caribbean and this ridging will retreat E to be confined to the NE Caribbean by tomorrow. A cold front will move SE over S Florida through midday tomorrow and then will continue moving over the Central Bahamas through the 16th, where it will stall and gradually dissipate through the 18th. Behind this front, strong ridging from broad high pressure over the Central U.S. will build across Florida by tomorrow night. The ridging will remain strong as it expands S over the Bahamas through Hispaniola during 16/12. By 17/12, the strong ridging will encompass waters from the Florida Straits through the NE Caribbean and will persist as such through. read more...


14/12/2016

ARC Weather Forecast 14/12/2016

ARC Weather14/12/2016Synopsis: High pressure south of Azores with a ridge S to the E Caribbean Sea will remain stationary through tomorrow night. The ridge will weaken over the E Caribbean Sea overnight 15/12. A cold front over the Central Bahamas tomorrow evening will move E and extend from N Hispaniola NE to near 25N/50W by the morning of 17/12. The cold front will lift NE while weakening the rest of 17/12 as a strong high builds north of Bermuda. A ridge will build S over the eastern Caribbean Sea the rest of 17/12 through 18/12.Conclusion: Fresh to strong E to NE winds currently cover all remaining grids (KK, LL, QQ and RR), with the strongest winds and some gusts up to about 30kts located mainly in Grid RR and near the Lesser Antilles. These enhanced winds will continue throughout. read more...


13/12/2016

ARC Weather Forecast 13/12/2016

ARC Weather13/12/2016Synopsis: High pressure centred near 33N/50W extends a ridge axis S towards 15N. The high center will shift E towards 33N/26W through the evening of 14/12, with a ridge axis extending SW towards Puerto Rico by then. Ridging will weaken through the morning of 15/12 as a cold front extending S into the N Bahamas, from low pressure centred over the Gulf of Saint Lawrence, will move E towards the Lesser Antilles through early on 16/12.Conclusion: Fresh E to NE winds will continue across all remaining grids throughout the next few days, with some strong gusts as well mainly in Grids QQ and RR. However, please note that these gusts can also be experienced in Grids KK and LL and will be higher within or near squalls. Moderate period NE swells are forecast to abate slightly. read more...


13/12/2016

ARC Weather Forecast 12/12/2016

ARC Weather12/12/2016Synopsis: High pressure east of Bermuda will move steadily east across the central Atlantic through tomorrow and then stopping to the south of the Azores by late 14/12. This high will strengthen the moderate ridging already in place west of 40W and south of 20N through tonight. The ridging will then very slowly weaken through 14/12, most noticeably farther west nearer to the Caribbean Sea.Conclusion: Over the next 2-3 days, fresh to strong ENE trades will persist reaching at time 20-25 kts with gusts exceeding 30 kts across the more W'rn Zones of LL, RR and W'rn KK and QQ. Swell will remain ENE with the possibility of long period N sets with average swell height of 8-10 feet overall, with higher swell exceeding 10 feet across Zone RR, LL, and western Zones KK and QQ. read more...


11/12/2016

ARC Weather Forecast 11/12/2016

ARC Weather 11/12/2016Synopsis: A weak front extends from just west of the Azores SW to approximately 25N/60W. This will drift SE through today, dissipating tonight.High pressure along the US East Coast will move offshore today, passing north of Bermuda through tonight, continuing steadily to SW of the Azores by late 13/12.Ridging is moderately strong near and south of 20N across the waters from 40W to the Caribbean Sea, with weaker/broader ridging from 20N to 25N. As the above mentioned high passes well north of the region, this will strengthen the ridging from late today through tomorrow, with the ridging beginning to weaken nearer to the Caribbean Sea by late 13/12.Conclusion: Over the next 2-3 days as the ridging strengthens across the ARC Zones, ENE trades will strengthen with. read more...


10/12/2016

ARC Weather Forescast 10/12/2016

ARC Weather10/12/2016Synopsis: Low pressure west of Iberia near 40N/15W extends a weak front S'ward to near Madeira. The low will remain nearly stationary thru tomorrow, weakening tomorrow and dissipating tomorrow night. The front will drift E'ward into the Canary Islands by tomorrow morning, tending to stall and gradually dissipate along13W thru tomorrow night.By the morning of 12/12, an axis of broad ridging will extend from Iberia SW'ward across Madeira and this will remain thru 13/12.Also on 12/12, expect a strong front from just west of the Azores SW'ward to near 25N/50W and this will move SE'ward across the Azores thru the morning of 13/12 to near 25N/40W, then morning of the 14th it will extend from just east of Madeira to near 25N/25W.A broad area of high pressure will move off. read more...


10/12/2016

ARC Weather Forecast 09/12/2016

ARC Weather09/12/2016Synopsis: A front is now located from 20N/35W NE to 43N/15W. This front will drift SE and will dissipate thru the 10. A ridge of high pressure extends from 24N/60W E to 30W. This will become aligned from 34N/21W WSW to the NE Caribbean on the 11. The ridge then merges into another to the west, extending from 33N/51W S to 15N on the 12. The ridge then becomes aligned from 32N/38W SW to the NE Caribbean on the 13.Conclusion: Gentle to moderate ENE winds will continue across Grids II, JJ and KK thru the evening of the 10, with the lightest winds remaining on the N parts of these grids. By the morning of the 11, winds are expected to freshen across these same grids. Fresh ENE winds across Grids OO, PP, QQ, and RR thru the 11. Swells from S to N until about the middle of. read more...


08/12/2016

ARC Weather Forecast 08/12/2016

ARC Weather 08/12/2016Synopsis: A frontal boundary extends from 27N/48W NE to 45N/18W. This will move SE, and will extend from 25N/40W Ne to 40N/12W on the night of the 09, while dissipating. A weak ridge of high pressure extends from 2N/55W E to 30W. This ridge shifts E, and will extend from 45N/10W SW to 20N/50W on the 10. This merges with a newer, stronger ridge from 35N/48W S to 13N on the 12. By the 13, the ridge extends from the Azores SW to the NE Caribbean. A front will extend from 27N/60W NE to the Azores on the 11, and this will move E while weakening, and will extend from 26N/35W NE to Portugal on the 13.Conclusion: Gentle winds north of 20N and more moderate to fresh ENEs from about 20N S (across Grids OO, PP, QQ and RR) thru out the next few days. Some gusts into the. read more...


07/12/2016

ARC Weather Forecast 07/12/16

ARC Weather Forecast07/12/2016Synopsis: Good morning. Broad high pressure system is located near 25N/60W with associated ridging extending ESE across the Cape Verde Islands. Ridging is expected to persist thru the 11 while strengthening across all grids thru the 11 as the high moves ENE and strengthens. A broad gale is located near 45N/30W with associated cold front extending SW across 20N/35W and associated troughing extending SW across 25N/50W. This gale is expected to move NE thru tomorrow afternoon, with cutoff gale developing along the front near 40N/35W. This gale will have troughing extending SW across Grids II, and JJ, which will lift NE thru the 10 and weaken.Conclusion: Gentle winds across Grids II, JJ and KK, increasing thru the next few days. More moderate to fresh E winds on. read more...


06/12/2016

ARC 2016 Weather 06/12/2016

ARC Weather06/12/2016Synopsis: A large storm centered near 52N/37W will track WNW to 54N/45W thru tomorrow morning, and then remain nearly stationary thru the night of the 07th. An associated cold front extends SW from the Azores thru 25N/45W and will move E the next 2 days while weakening. High pressure centered near 30N/70W with ridging s across the e Caribbean Sea will move ESE to 26N/48W thru the 09 and weaken. A large low is forecast to be near Cape Hatteras tomorrow night and will track ESE to 34N/52W thru the 08/am while weakening to a broad low.On the 09, a new area of high pressure will build near the Azores on the 09 and will extend a ridge SW thru the E Caribbean. This ridging will become strong by the 11 and will remain strong thru the 14 as reinforcing high pressure moves SE. read more...


05/12/2016

ARC Weather Forecast 05/12/2016

ARC Weather05/12/2016Synopsis: Good morning. A large gale is located near 45N/35W with an associated cold front extending SW to approximately 20N/55W across the North/Central Atlantic at this time. This gale and associated front are expected to lift NE while weakening just slightly thru the morning of the 06.High pressure over the E Great Lakes with a ridge e to 70W and s to 30N will move SE offshore SE Long Island tonight, then move se to near 29N/67W by tomorrow evening. This high will continue se to near 25N/62W by evening of the 07, then drift e to near 25N/50W by the morning of the 09. The ridge will weaken over the NE Caribbean Sea late on the 09 thru 10 as a cold front moves thru the Bahamas. Another broad area of high pressure located just SW of the Canaries, with associated. read more...


04/12/2016

ARC Weather Forecast 04/12/2016

ARC Weather Forecast04/12/2016Synopsis: Good morning. A gale near 39N/18W with a cold front over the W Canary Islands will move E to near 38N/13W thru this afternoon. The gale will move SE and weaken into a low over the Gulf of Cadiz by afternoon the 05. The low will weaken offshore NW Morocco overnight the 05. High pressure near 24N/36W will move E to near 24N/26W by tonight. This high will move NE over the W Canary Islands by afternoon the 05. A storm near 42N/37W will extend a cold front SW to near 23N/53W on the afternoon the 05. The storm will accelerate NW over the NW Atlantic on the morning of the 06. The cold front will move E and extend from just west of the Azores SW to near 25N/40W by evening of the 06. High pressure near 25N/60W by afternoon the 06 will move E to near 25N/59W. read more...


03/12/2016

ARC Weather Forecast 03/12/2016

ARC Weather03/02/2016Synopsis: A gale is now located near 38N/19W, and this will move E to just west of S Portugal thru early the 05. The system then moves SE to Gibraltar thru later the 05 while rapidly dissipating. A ridge of high pressure extends form 25N/60W E to 40W, and this will shift E, extending from the Canary Islands SW to 18N/35W on the 05. The ridge then shifts E, and will extend from Gibraltar SW to 20N/35W on the 08. Another large and complex gale is located over the Grand Banks. This will move NE to near 50N/33W thru the 06. Another gale will form near 40N/45W on the 06, and this will move NE to 50N/28W thru the 08. Yet another gale just east of the Mid-Atlantic states on the 07 will move ESE to 33N/45W thru the 08. A cluster of showers/squalls 05N N to 15N and from 52W E. read more...


02/12/2016

ARC Weather Forecast 02/12/2016

ARC Weather Forecast02/12/2016Synopsis: Good morning. A gale is centered NW of the Azores, and extends from 50N/45W, SE across the Azores towards the Canaries. This gale is forecast to lift NE while weakening as it drifts E towards W Iberia thru the 05. A thermal trough currently extends along W Africa, SW across the Cape Verde Islands. This trough is forecast to broaden thru the 05 as high pressure ridging moves towards the Cape Verde Islands during this time.The above broad high pressure ridging is currently centered 30N/55W and extends from Florida, ESE towards the W Cape Verde Islands. This area of high pressure ridging is forecast to move E towards the Cape Verde Islands thru the 05.A cold front is forecast to move SE across the Bahamas thru the 05, extending from E Hispaniola, NE. read more...


01/12/2016

ARC Weather Forecast 01/12/2016

ARC Weather Forecast01/12/2016Synopsis: Good morning. Weak ridging extends SW along the coast of Morocco and into the Canaries. Ridging will break down thru tomorrow as trough of low pressure that currently extends from gale center near 40N/38W SSE to near 25N/33W moves NE over the next few days. The gale will be centered near the Azores early on the 02, with the trough extending SE into the Canaries. The gale will move SE into the coast of Morocco thru the 05, and will gradually weaken.A cold front now extends from 38N/34W SE thru 22N/38W and will move NE toward the Azores thru tomorrow. An area of high pressure centered east of Bermuda will move SE to near 25N/50W thru the 02, then drift E. The next cold front will extend from 35N/40W SW thru 27N/65W on the 03/PM and will move E to. read more...


30/11/2016

ARC Weather Forecast 30/11/2016

ARC Weather Forecast30/11/2016Synopsis: A GALE is centered North of Madeira, and extends from the Bay of Biscay, SW across Iberia across Madeira and the Canaries towards 25N/25W.Along this GALE extends a COLD FRONT from SW Portugal, SW across the Canaries towards 30N/35W. This GALE is forecast to lift N towards 45N/20W thru the afternoon hours of the 01 while weakening, while associated COLD FRONT moves NE towards SW Iberia while weakening.A complex GALE centered east of Newfoundland, extends from E Newfoundland, SE 25N/35W. Along the E side of this GALE extends a COLD FRONT from 55N/40W, S along 40W towards 25N. This GALE is forecast to strengthen/broaden thru the morning hours of the 03rd extending across much of the N Atlantic from NW Africa, NW across the Canaries towards E Quebec.. read more...



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