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ARC WEATHER 10/12 0600Z - FORECAST UPDATE #16



ARC WEATHER 10/12 0600Z - FORECAST UPDATE #16
10/12/2014


Synopsis: A cut off gale with center near 24N/32W will move W towards 24N/42W through the 12/12 while weakening into a low. The low will then slowly move NW through the 13/12 while dissipating. High pressure over mid-Atlantic will build behind the low and remain in place through the 15/12.

Conclusion: Swells will be highest in grids over mid-ocean today, II, JJ, KK, OO, PP, QQ, with lighter swells in grids NN, MM, and RR. Swells will gradually build in RR as cut off weakens but these swells will have a long period. Continue to recommend vessels remain well clear of grids HH and II to allow for higher winds and swells to gradually lower today.

T = 10/12 0600 UTC

SHWRS/SQUALLS* IN ALL GRID AREAS

GG:
T:WINDS NE-E 15-20KTS SEAS 2-4 SWELLS NE-E 6-8FT (2SEC) SKIES PRTLY CLDY CURRENTS FROM NE @ 0.6KTS.
T+12:WINDS NE-E 18-23KTS SEAS 3-5 SWELLS NE-E 6-8FT (2SEC) SKIES CLDY CURRENTS FROM SSE @ 0.4KTS.
T+24:WINDS NE-E 20-25KTS SEAS 4-6 SWELLS NE-E 7-9FT (2SEC) SKIES CLDY CURRENTS FROM N @ 0.3KTS.
T+36:  WINDS NE-E 20-25KTS SEAS 2-4 SWELLS NE-E 8-10FT (2SEC) SKIES CLDY CURRENTS FROM ESE @ 0.3KTS.

HH:
T:WINDS E-SE 16-21KTS SEAS 2-4 SWELLS N-NE 5-8FT (8SEC) SKIES PRTLY CLDY CURRENTS FROM SSW @ 0.2KTS.
T+12:WINDS E-SE 18-23KTS SEAS 4-5 SWELLS N-NE 7-10FT (7SEC) SKIES PRTLY CLDY CURRENTS FROM SSW @ 0.4KTS.
T+24:WINDS NE-E 16-21KTS SEAS 4-5 SWELLS N-NE 10-13FT (6SEC) SKIES MOSTLY CLDY CURRENTS FROM S @ 0.4KTS.
T+36:  WINDS NE-E 14-19KTS SEAS 3-4 SWELLS N-NE 9-12FT (5SEC) SKIES CLDY CURRENTS FROM SE @ 0.4KTS.

II:
T:WINDS NE-E 16-21KTS SEAS 1-3 SWELLS N-NE 10-12FT (10SEC) SKIES PRTLY CLDY CURRENTS FROM SSE @ 0.3KTS.
T+12:WINDS NE-N 18-23KTS SEAS 1-3 SWELLS N-NE 7-10FT (10SEC) SKIES PRTLY CLDY CURRENTS FROM NNW @ 0.3KTS.
T+24:WINDS N-NW 16-21KTS SEAS 1-2 SWELLS N-NE 7-9FT (9SEC) SKIES PRTLY CLDY CURRENTS FROM ESE @ 0.2KTS.
T+36:  WINDS NW-W 14-19KTS SEAS 0-2 SWELLS NW-N 7-9FT (9SEC) SKIES PRTLY CLDY CURRENTS FROM SW @ 0.2KTS.

JJ:
T:WINDS NE-E 14-19KTS SEAS 2-3 SWELLS N-NE 9-11FT (11SEC) SKIES PRTLY CLDY CURRENTS FROM E @ 0.4KTS.
T+12:WINDS NE-E 14-19KTS SEAS 2-3 SWELLS NE-E 8-10FT (11SEC) SKIES PRTLY CLDY CURRENTS FROM E @ 0.4KTS.
T+24:WINDS NE-E 13-18KTS SEAS 2-3 SWELLS NE-E 8-10FT (10SEC) SKIES PRTLY CLDY CURRENTS FROM NE @ 0.3KTS.
T+36:  WINDS N-NE 16-21KTS SEAS 1-3 SWELLS NE-E 8-10FT (11SEC) SKIES PRTLY CLDY CURRENTS FROM E @ 0.5KTS.

KK:
T:WINDS N-NE 18-23KTS SEAS 2-4 SWELLS NE-E 8-10FT (10SEC) SKIES PRTLY CLDY CURRENTS FROM SSW @ 0.4KTS.
T+12:WINDS N-NE 16-21KTS SEAS 2-3 SWELLS N-NE 9-11FT (10SEC) SKIES MOSTLY CLDY CURRENTS FROM SSE @ 0.4KTS.
T+24:WINDS NE-E 16-21KTS SEAS 2-4 SWELLS N-NE 9-11FT (12SEC) SKIES PRTLY CLDY CURRENTS FROM S @ 0.5KTS.
T+36:  WINDS NE-E 15-20KTS SEAS 2-3 SWELLS N-NE 9-11FT (11SEC) SKIES PRTLY CLDY CURRENTS FROM S @ 0.2KTS.

MM:
T:WINDS NE-E 12-17KTS SEAS 2-3 SWELLS N-NE 4-6FT (2SEC) SKIES CLDY CURRENTS FROM SW @ 0.9KTS.
T+12:WINDS NE-E 13-18KTS SEAS 1-3 SWELLS N-NE 4-6FT (2SEC) SKIES PRTLY CLDY CURRENTS FROM N @ 0.6KTS.
T+24:WINDS NE-E 16-21KTS SEAS 3-5 SWELLS N-NE 5-7FT (2SEC) SKIES PRTLY CLDY CURRENTS FROM NE @ 0.4KTS.
T+36:  WINDS NE-E 14-19KTS SEAS 2-4 SWELLS N-NE 5-7FT (2SEC) SKIES PRTLY CLDY CURRENTS FROM SSE @ 0.7KTS.


NN:
T:WINDS NE-E 12-17KTS SEAS 1-3 SWELLS N-NE 4-6FT (7SEC) SKIES MOSTLY CLDY CURRENTS FROM WNW @ 0.3KTS.
T+12:WINDS NE-E 13-18KTS SEAS 2-4 SWELLS N-NE 4-6FT (3SEC) SKIES CLDY CURRENTS FROM ESE @ 0.1KTS.
T+24:WINDS NE-E 15-20KTS SEAS 2-4 SWELLS N-NE 5-7FT (3SEC) SKIES CLDY CURRENTS FROM S @ 0.1KTS.
T+36:  WINDS N-NE 13-18KTS SEAS 2-3 SWELLS N-NE 5-7FT (4SEC) SKIES CLDY CURRENTS FROM NE / WEAKKTS.

OO:
T:WINDS N-NE 09-14KTS SEAS 1-3 SWELLS N-NE 8-10FT (11SEC) SKIES PRTLY CLDY CURRENTS FROM E @ 0.6KTS.
T+12:WINDS N-NE 12-17KTS SEAS 1-3 SWELLS N-NE 8-10FT (10SEC) SKIES MOSTLY CLDY CURRENTS FROM E @ 1.1KTS.
T+24:WINDS N-NE 13-18KTS SEAS 1-3 SWELLS N-NE 7-9FT (10SEC) SKIES CLDY CURRENTS FROM ESE @ 1.1KTS.
T+36:  WINDS N-NE 12-17KTS SEAS 2-3 SWELLS N-NE 7-9FT (9SEC) SKIES MOSTLY CLDY CURRENTS FROM E @ 1KTS.

PP:
T:WINDS NE-E 11-16KTS SEAS 2-3 SWELLS N-NE 8-10FT (10SEC) SKIES PRTLY CLDY CURRENTS FROM ENE @ 0.4KTS.
T+12:WINDS NE-E 12-17KTS SEAS 2-3 SWELLS N-NE 8-10FT (11SEC) SKIES PRTLY CLDY CURRENTS FROM ENE @ 0.8KTS.
T+24:WINDS NE-E 15-20KTS SEAS 2-3 SWELLS N-NE 8-10FT (11SEC) SKIES PRTLY CLDY CURRENTS FROM NE @ 0.5KTS.
T+36:  WINDS NE-E 14-19KTS SEAS 2-3 SWELLS N-NE 8-10FT (10SEC) SKIES PRTLY CLDY CURRENTS FROM NE @ 0.9KTS.

QQ:
T:WINDS NE-E 17-22KTS SEAS 3-4 SWELLS N-NE 8-10FT (10SEC) SKIES PRTLY CLDY CURRENTS FROM SE @ 0.2KTS.
T+12:WINDS NE-E 14-19KTS SEAS 2-3 SWELLS N-NE 8-10FT (10SEC) SKIES PRTLY CLDY CURRENTS FROM ESE @ 0.7KTS.
T+24:WINDS NE-E 15-20KTS SEAS 3-4 SWELLS N-NE 8-10FT (10SEC) SKIES MOSTLY CLDY CURRENTS FROM SSE @ 0.2KTS.
T+36:  WINDS NE-E 13-18KTS SEAS 2-3 SWELLS N-NE 8-10FT (11SEC) SKIES PRTLY CLDY CURRENTS FROM ESE @ 0.5KTS.

RR:
T:WINDS NE-E 15-20KTS SEAS 2-3 SWELLS NE-E 6-8FT (3SEC) SKIES PRTLY CLDY CURRENTS FROM SSE @ 0.6KTS.
T+12:WINDS NE-E 14-19KTS SEAS 1-3 SWELLS NE-E 6-8FT (5SEC) SKIES PRTLY CLDY CURRENTS FROM SSE @ 0.8KTS.
T+24:WINDS NE-E 15-20KTS SEAS 2-4 SWELLS N-NE 7-9FT (5SEC) SKIES PRTLY CLDY CURRENTS FROM SE @ 0.6KTS.
T+36:  WINDS NE-E 14-19KTS SEAS 2-3 SWELLS N-NE 7-9FT (5SEC) SKIES PRTLY CLDY CURRENTS FROM SE @ 0.9KTS.

* WINDS AND SEAS HIGHER IN SQUALLS