Synopsis: 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 next
48 hours across Zone AA as moderate to fresh breezes that may gust into the low to middle 20s continue during this time with some periods of easing this evening and tomorrow evening due to diurnal effects. Winds may be locally higher at times while in between islands or abeam capes due to the localized funneling of winds. Swells will gradually build to 3-5ft but will remain long in period.
Zone BB: Conditions will worsen across Zone BB over the next 24 hours as the aforementioned front moves thru the zone. The gentle to moderate SE will freshen into fresh to strong SW that may gust into the low 30s at times ahead of the front tomorrow morning. Conditions will then gradually ease tomorrow evening into the morning of the 23 as the front moves thru.
Swells will build to 7-9ft but will remain long in period.
Zone CC: Conditions will be worst in the first 24 hours across Zone CC due to the aforementioned frontal passage. The fresh to strong NW that may gust into the low 30s at times will begin to ease into moderate to fresh NW tomorrow evening. Swells will build to 7-9ft and will remain long in period with the highest conditions across the N portions of Zone CC.
Zone HH: Conditions will be favorable for transit across Zone HH as gentle to moderate breezes continue at this time with swells building to 4-6ft and remaining long in period.
Zone GG: Conditions will be favorable for transit across Zone GG during the next 48 hours as gentle to moderate NE that may gust into the low 20s continue at this time. Winds may be locally higher at times while abeam capes due to localized funneling of winds. Swells will build to 4-6ft and will remain long in period.
T=21NOV 0600 UTC
AA FORECAST:
21/06 GMT(T + 0): SE-S(135 - 180) 13-18 GUSTS 23KTS. SEAS 2-4 SWELLS W-NW 2-4FT CLEAR. E @ 0.2KTS.
21/18 GMT(T + 12): SE-S(135 - 180) 09-14 GUSTS 19KTS. SEAS 1-3 SWELLS W-NW 2-4FT PARTLY CLDY. W @ 0.2KTS.
22/06 GMT(T + 24): SE-S(135 - 180) 14-19 GUSTS 24KTS. SEAS 2-4 SWELLS W-NW 2-4FT MSTLY CLDY. NNE @ 0.3KTS.
22/18 GMT(T + 36): SE-S(135 - 180) 09-14KTS. SEAS 1-3 SWELLS W-NW 2-4FT CLEAR. NW @ 0.2KTS.
23/06 GMT(T + 48): SE-S(135 - 180) 12-17 GUSTS 22KTS. SEAS 2-4 SWELLS W-NW 3-5FT MSTLY CLDY. NNE @ 0.3KTS.
BB FORECAST:
21/06 GMT(T + 0): SE-S(135 - 180) 10-15 GUSTS 20KTS. SEAS 2-4 SWELLS N-NW 3-5FT PARTLY CLDY. ISLTD SHWRS. WSW @ 0.7KTS.
21/18 GMT(T + 12): S-SW(180 - 225) 15-20 GUSTS 25KTS. SEAS 3-5 SWELLS N-NW 5-7FT CLDY. ISLTD SHWRS*. WSW @ 1KTS.
22/06 GMT(T + 24): SW-W(225 - 270) 20-25 GUSTS 30KTS. SEAS 4-6 SWELLS NW-W 6-8FT PARTLY CLDY. ISLTD SHWRS. WSW @ 0.7KTS.
22/18 GMT(T + 36): W-NW(270 - 315) 15-20 GUSTS 25KTS. SEAS 3-5 SWELLS NW-W 7-9FT PARTLY CLDY. ISLTD SHWRS*. W @ 0.6KTS.
23/06 GMT(T + 48): W-NW(270 - 315) 13-18 GUSTS 23KTS. SEAS 2-4 SWELLS NW-W 6-8FT MSTLY CLDY. ISLTD SHWRS*. WSW @ 0.9KTS.
CC FORECAST:
21/06 GMT(T + 0): W-NW(270 - 315) 20-25 GUSTS 30KTS. SEAS 4-6 SWELLS W-NW 7-9FT CLDY. ISLTD SHWRS*. NNE @ 0.2KTS.
21/18 GMT(T + 12): NW-N(315 - 0) 20-25 GUSTS 30KTS. SEAS 4-6 SWELLS W-NW 7-9FT PARTLY CLDY. ISLTD SHWRS*. ENE @ 0.1KTS.
22/06 GMT(T + 24): NW-N(315 - 0) EASE 25-15KTS. SEAS 3-5 SWELLS NW-N 7-9FT PARTLY CLDY. ISLTD SHWRS*. N @ 0.3KTS.
22/18 GMT(T + 36): NW-N(315 - 0) 10-15KTS. SEAS 2-4 SWELLS NW-N 7-9FT PARTLY CLDY. ISLTD SHWRS*. ESE @ 0.1KTS.
23/06 GMT(T + 48): NW-W(315 - 270) 12-17 GUSTS 22KTS. SEAS 2-4 SWELLS NW-N 6-8FT PARTLY CLDY. ISLTD SHWRS*. NW @ 0.2KTS.
HH FORECAST:
21/06 GMT(T + 0): SE-E(135 - 90) 10-15KTS. SEAS 2-4 SWELLS NW-N 3-5FT CLDY. NNW @ 0.1KTS.
21/18 GMT(T + 12): SE-E(135 - 90) 05-10KTS. SEAS 1-3 SWELLS NW-N 3-5FT PARTLY CLDY. ISLTD SHWRS. ENE @ 0.2KTS.
22/06 GMT(T + 24): E-NE(90 - 45) 07-12KTS. SEAS 1-3 SWELLS NW-N 4-6FT CLEAR. E @ 0.1KTS.
22/18 GMT(T + 36): E-NE(90 - 45) 07-12KTS. SEAS 1-3 SWELLS NW-N 4-6FT MSTLY CLDY. NNE @ 0.4KTS.
23/06 GMT(T + 48): E-SE(90 - 135) 06-11KTS. SEAS 1-3 SWELLS NW-N 4-6FT PARTLY CLDY. E @ 0.3KTS.
GG FORECAST:
21/06 GMT(T + 0): NE-N(45 - 0) 09-14 GUSTS 19KTS. SEAS 1-3 SWELLS N-NW 3-5FT MSTLY CLDY. NNE @ 0.4KTS.
21/18 GMT(T + 12): NE-N(45 - 0) 09-14 GUSTS 19KTS. SEAS 1-3 SWELLS NW-W 3-5FT MSTLY CLDY. NE @ 0.3KTS.
22/06 GMT(T + 24): NE-N(45 - 0) 10-15 GUSTS 20KTS. SEAS 2-4 SWELLS W-SW 2-4FT MSTLY CLDY. N @ 0.2KTS.
22/18 GMT(T + 36): NE-N(45 - 0) 10-15 GUSTS 20KTS. SEAS 2-4 SWELLS W-NW 3-5FT MSTLY CLDY. NNE @ 0.5KTS.
23/06 GMT(T + 48): NE-N(45 - 0) 10-15 GUSTS 20KTS. SEAS 2-4 SWELLS W-NW 4-6FT PARTLY CLDY. E @ 0.1KTS.
* WINDS AND SEAS HIGHER IN SQUALLS