marine weather discussion

NWS TPC/National Hurricane Center Miami FL

150 am EST Sat Nov 21 2009

Marine weather discussion for Gulf of Mexico...Caribbean Sea and

southwest north Atlc S of 31n W of 55w

Upper levels...

deep layer ridge extends from the southwest Caribbean across the

Greater Antilles and the northern Lesser Antilles to over the

southeast part of the Atlantic area. Moderate southwesterlies

are to the north and northwest of the ridge over the Gulf of

Mexico and the northern and northwestern part of the Atlantic

area. A shortwave is over the northwest Gulf of Mexico and will

move across the northern Gulf today and tonight reaching the

southeast United States Sunday to be absorbed by the westerly

flow north of the area. The ridge will contract some Wednesday

as a strong middle latitude trough develops over the central

United States.

Surface...

shortwave over Texas has associated surface low over the

northwest Gulf with winds of 20 to 25 knots near the low. Winds

will be confined to near the low because there is not much of a

high pressure either east or west of the low. Weak associated

cold front will become diffuse over the eastern Gulf Sunday and

Monday. Next cold front associated with the strong middle

latitude trough will move off the Texas coast Tuesday and reach

from North Florida to Bay of Campeche midday Wednesday and

central Florida to Yucatan Peninsula late Wednesday. Winds will

approach gale force in the southwest Gulf with this front.

Trades of 20 knots or more are confined to south of 17n east of

80w through Tuesday then will weaken some Wednesday as the above

mentioned frontal trough weakens the ridge north of the area

Wednesday.

Otherwise winds will be less than 20 kt.

Warnings...

Atlc...

.None.

Caribbean...

.None.

Gulf of Mexico...

.None.

$$

Forecaster ll