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ARC+ Weather forecast 13/11/2015



ARC+ Weather forecast 13/11/2015
13/11/2015


Synopsis: Good morning.  A thermal trough of low pressure extends along the W Coast of Africa from 15N to 25N.  The trough will remain in place thru tomorrow night, then drift offshore on the 14/11 and 15/11. To the W of this trough, ridging from high pressure centered E of the Azores extends S along 20W to 15N.  This ridging will tend to shift N and weaken over the next 3 days. In the long range, the trough will dissipate on the 16/11, with the ridging strengthening steadily from midday 16/11 into the 17/11.

Conclusion: NE winds today will tend highest in the n section of Grid BB, and these winds will tend to gradually ease thru tomorrow evening. Starting tomorrow morning, N winds and swells will become enhanced across E parts of Grids GG and MM due to the interaction between the thermal trough of low pressure and high pressure ridging, with gusts reaching 33kts closer to the coast of Africa by tomorrow evening. Swells tend highest in the SE corner of Grid MM tomorrow evening, where they will build to 9-10 feet.

T = 13/11 0600 UTC

BB:
T: WINDS NNE-ENE 19-24 GUSTS 30KTS. SEAS 3-5 SWELLS NW-N 6-8FT (5SEC). SKIES PRTLY CLDY. ISOLATED SHWRS/SQUALLS*. CURRENTS FROM SSW @ 0.3KTS.
T+12: WINDS N-NE 17-22 GUSTS 26KTS. SEAS 3-4 SWELLS NNW-NNE 7-9FT (5SEC). SKIES PRTLY CLDY. ISOLATED SHWRS/SQUALLS*. CURRENTS FROM ESE @ 0.6KTS.
T+24: WINDS NE-E 19-24 GUSTS 29KTS. SEAS 3-5 SWELLS NNW-NNE 8-10FT (5SEC). SKIES CLDY. ISOLATED SHWRS. CURRENTS FROM S @ 0.6KTS.
T+36: WINDS NNE-ENE 16-21 GUSTS 26KTS. SEAS 2-4 SWELLS NNW-NNE 6-8FT (5SEC). SKIES CLEAR. CURRENTS FROM ESE @ 0.4KTS.
T+48: WINDS NNE-ENE 15-20KTS. SEAS 2-4 SWELLS NNE-ENE 5-7FT (5SEC). SKIES PRTLY CLDY. ISOLATED SHWRS/SQUALLS*. CURRENTS FROM SSE @ 0.7KTS.

GG:
T: WINDS NNE-ENE 10-15KTS. SEAS 1-3 SWELLS NW-N 6-8FT (2SEC). SKIES PRTLY CLDY. ISOLATED SHWRS/SQUALLS*. CURRENTS FROM S @ 0.3KTS.
T+12: WINDS N-NE 14-19KTS. SEAS 2-4 SWELLS NW-N 6-8FT (4SEC). SKIES CLDY. ISOLATED SHWRS/SQUALLS*. CURRENTS FROM WSW @ 0.4KTS.
T+24: WINDS N-NE 16-21KTS. SEAS 2-4 SWELLS NW-N 5-7FT (2SEC). SKIES CLDY. CURRENTS FROM SW @ 0.1KTS.
T+36: WINDS N-NE 12-17 GUSTS 25KTS. SEAS 2-3 SWELLS NNW-NNE 4-6FT (2SEC). SKIES CLDY. CURRENTS FROM SSW @ 0.3KTS.
T+48: WINDS N-NE 14-19 GUSTS 30KTS. SEAS 2-4 SWELLS NNW-NNE 5-7FT (2SEC). SKIES CLDY. CURRENTS FROM S @ 0.2KTS.

MM:
T: WINDS NNW-NNE 12-17KTS. SEAS 2-3 SWELLS S-SW/MIXED/NW 4-6FT (2SEC). SKIES CLDY. ISOLATED SHWRS/SQUALLS*. CURRENTS FROM WSW @ 0.4KTS.
T+12: WINDS NNW-NNE 20-25 GUSTS 28KTS. SEAS 3-5 SWELLS NW-N 6-8FT (2SEC). SKIES CLDY. CURRENTS FROM NW @ 0.8KTS.
T+24: WINDS NNW-NNE 19-24 GUSTS 30KTS. SEAS 3-5 SWELLS NW-N 8-10FT (2SEC). SKIES CLDY. CURRENTS FROM NE @ 0.8KTS.
T+36: WINDS N-NE 16-21 GUSTS 26KTS. SEAS 2-4 SWELLS NNW-NNE 7-9FT (2SEC). SKIES CLDY. CURRENTS FROM SE @ 0.5KTS.
T+48: WINDS N-NE 17-22 GUSTS 33KTS. SEAS 3-4 SWELLS N-NE 7-9FT (2SEC). SKIES PRTLY CLDY. CURRENTS FROM WNW @ 0.4KTS.

* WINDS AND SEAS HIGHER IN SQUALLS