Bermuda to Portsmouth WX - 19 May

Good Morning.

Developing low centered near 35N/68W will move NE towards 40N/55W thru 20/05 evening when an associated cold front will extend SW to 30N/65W. Low will strengthen moving to Grand Banks by afternoon of 21/05 when the tail end of the cold front will be near 32N/55W. As Low continues E across the Atlantic, it will pass N of Azores on night of 22/05.

20/05 morning, high pressure ridging will build E off US Coast behind the low. Will move E across the Atlantic to be near 35N/45W on night of 22/05.

On evening of 21/05 developing low moves off coast of Delmarva Peninsula. Will move NE to just SE of Maine by night of 22/05, when associated cold front will extend SSW to N Bahamas.

Conclusion: Strong/ gusty winds with swell of up to 10 feet at times will be in place across SE Zone F and NW Zone C this morning and move E across N Zone C thru today as the developing low moves out of the area. Conditions will then ease across Zone F and C thru the 20/05 as high pressure builds off the coast. Building low expected to rapidly strengthen across Zone I on 21/05. Will bring strong / gusty winds along with large swell exceeding 10 feet on 21/05.

The main area of the Gulf Stream extends from about 34N/76W in S Zone I NW to about 38N/71.5W in N Zone F at an average of 1.5 knots. Variable CRRNTS are found elsewhere across the forecast area.


ZONE C:

19/12 (T + 0): S-SW 20-25 GUSTS 30KTS. SEAS 3-5 SWELLS SSE-SSW 7-9FT (2SEC). CLDY. ISOLATED SQLLS. CRRNTS W 0.6KTS.

20/00 (T + 12): VEER SW-W-NW 19-24 GUSTS 29KTS. SEAS 3-5 SWELLS S-SW 9-11FT (5SEC). CLDY. CRRNTS NNW 0.7KTS.

20/12 (T + 24): NW-N 14-19KTS. SEAS 2-3 SWELLS S-SW 7-9FT (5SEC). CLDY. CRRNTS WNW 0.1KTS.

21/00 (T + 36): N-NE 13-18KTS. SEAS 2-4 SWELLS S-SE 5-7FT (3SEC). CLDY. ISOLATED SQLLS. CRRNTS NNE 0.7KTS.

21/12 (T + 48): NE-E 10-15KTS. SEAS 2-3 SWELLS SE-E 3-5FT (5SEC). MOSTLY CLDY. SQLLS. CRRNTS ENE 0.2KTS.


ZONE F:

19/12 (T + 0): NW-N 18-23 GUSTS 28KTS. SEAS 3-5 SWELLS S-SE 8-10FT (4SEC). MOSTLY CLDY. CRRNTS S 0.2KTS.

20/00 (T + 12): NNW-NNE 14-19KTS. SEAS 2-3 SWELLS S-SE/MIXED/N 7-9FT (4SEC). MOSTLY CLDY. CRRNTS SW 0.1KTS.

20/12 (T + 24): N-NE 13-18KTS. SEAS 2-4 SWELLS N-NE 5-7FT (5SEC). CLEAR. CRRNTS WNW 0.4KTS.

21/00 (T + 36): NE-E 10-15KTS. SEAS 1-3 SWELLS NNE-ENE 4-6FT (5SEC). PARTLY CLDY. ISOLATED SQLLS. CRRNTS SSE 0.4KTS.

21/12 (T + 48): E-SE 19-24 GUSTS 29KTS. SEAS 3-5 SWELLS ENE-ESE 3-5FT (4SEC). CLDY. SQLLS. CRRNTS NNE / WEAK KTS.


ZONE I:

19/12 (T + 0): N-NE 16-21KTS. SEAS 2-4 SWELLS NNE-ENE 6-8FT (2SEC). CLEAR. CRRNTS NNE 0.5KTS.

20/00 (T + 12): N-NE 14-19KTS. SEAS 1-3 SWELLS NNE-ENE 5-7FT (2SEC). CLDY. CRRNTS NNE 0.4KTS.

20/12 (T + 24): N-NE 15-20KTS. SEAS 2-4 SWELLS NE-E 4-6FT (2SEC). CLEAR. CRRNTS NNE 0.4KTS.

21/00 (T + 36): NE-E 20-25 GUSTS 30KTS. SEAS 2-4 SWELLS ENE-ESE 4-6FT (2SEC). CLDY. ISOLATED SQLLS. CRRNTS NE 0.2KTS.

21/12 (T + 48): ENE-ESE 25-30 GUSTS 35KTS. SEAS 4-6 SWELLS E-SE 6-8FT (2SEC). CLDY. SQLLS. CRRNTS SE 0.1KTS.

ENDS