[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 100004
TWDAT

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
704 PM EST Fri Mar 9 2018

Tropical Weather Discussion for North America, Central America
Gulf of Mexico, Caribbean Sea, northern sections of South
America, and Atlantic Ocean to the African coast from the
Equator to 32N. The following information is based on satellite
imagery, weather observations, radar and meteorological analysis.

Based on 1800 UTC surface analysis and satellite imagery through
2300 UTC.

...MONSOON TROUGH/ITCZ...

The monsoon trough passes through the coastal sections of the
borders of Sierra Leone and Liberia near 07N11W, to 05N15W. The
ITCZ continues from 05N15W, crossing the Equator along 35W, to
Brazil near 02S49W. Precipitation: isolated moderate to locally
strong rainshowers are from 07N southward from 52W eastward.

...DISCUSSION...

GULF OF MEXICO...

A surface trough is in the SW corner of the Gulf of Mexico,
from 25N97W near the NE coast of Mexico, to 17N93W in the Isthmus
of Tehuantepec of southern Mexico. Rainshowers, in general, are
possible within 180 nm to 240 nm on either side of the line from
23N83W near NW Cuba, to 27N97W a
along the coast of southern Texas.

Surface anticyclonic wind flow covers the Gulf of Mexico from 91W
eastward. A 1023 mb high pressure center is along the border of SW
Georgia and SE Alabama.

A cold front will move off the Texas coast late Sat
night, and race southeast across the entire gulf waters on Sun and
Sun night passing through the Straits of Florida on Mon
afternoon. Strong northerly winds in the wake of the front will
diminish from the northwest through Mon night. A ridge will extend
from northeast Texas to the Straits of Florida on Tue, and shift
northeast on Wed.

CARIBBEAN SEA...

Broad surface cyclonic wind flow is present in the Caribbean Sea.
An inverted trough in the surface pressure analysis runs from SE
Cuba to the coastal sections of Colombia near 10N75W.

Isolated moderate rainshowers are present across Jamaica, and in
NW sections of the Dominican Republic.

Fresh to strong trades will continue across the waters
east of 80W, except increasing to near gale force during the
overnight hours off the northwest coast of Colombia. A cold front
will pass east through the Yucatan Basin on Mon morning, reach
from east Cuba to the Gulf of Honduras on Mon night, stall from
Hispaniola to Nicaragua on Tue, and dissipate on Wed.

ATLANTIC OCEAN...

A western/central Atlantic Ocean cold front passes through 32N58W
to 25N66W to SE Cuba. Two cold fronts are moving eastward across
the western Atlantic. Precipitation: widely scattered moderate to
isolated strong rainshowers cover the area that is within 600 nm
to the NW of the line that passes through 32N52W, to the SW corner
of the Dominican Republic near 18N72W.

An eastern Atlantic Ocean cold front passes through 32N12W to
30N15W. The cold front is dissipating from 30N15W to 26N20W and
22N27W.

A 1023 mb high pressure center is near 23N50W, between the two
cold fronts.

A cold front from 27N65W to east Cuba will reach from
23N65W to Windward Passage on Sat, then stall across the tropical
waters north of the Greater Antilles on Sat night. Remnants of
the front will lift north on Sun ahead of another cold front
moving off the northeast Florida coast on Sun night. This cold
front will extend from near 31N73W to the northwest Cuba late Mon,
slow along a position from Bermuda to east Cuba on Tue, and stall
from 25N65W to east Cuba on Wed.

For additional information please visit
http://www.hurricanes.gov/marine

$$
MT
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