Tropical Weather Discussion
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AXNT20 KNHC 131155

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
755 AM EDT Tue Mar 13 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 0600 UTC surface analysis and satellite imagery through
1130 UTC.


...Atlantic Ocean Gale Warning...

A cold front extends across the west Atlantic from 31N67W to the
central Bahamas near 23N75W to eastern Cuba near 22N78W. Gale-
force winds are expected overnight north of 28N west of the cold
front to 76W, and north of 27N within 150 nm east of the front,
with seas to 14 feet. The conditions will persist another 12 hours
through this evening. Please read the latest Atlantic Ocean High
Seas Forecast under AWIPS/WMO headers HSFAT2/FZNT02 KNHC, for more


The monsoon trough extends from the African coast near 07N11W to
04N18W. The ITCZ continues from 04N18W to South America near
03S40W. Isolated showers are south of the monsoon trough and east
of 14W.



A cold front exiting the basin extends from eastern Cuba across
the Yucatan peninsula into the Bay of Campeche. Scattered rain
showers are noted within 45 nm of the front. Fresh to strong
northerly winds are across the basin. Strong northerly winds will
diminish from the northwest during the day. A ridge will extend
from northeast Texas to the Straits of Florida today, then a high
pressure will be centered in the northeast Gulf from Thursday
through the end of the week.


A cold front extends from eastern Cuba near 22N78W to the Yucatan
Channel near 19N88W. The front will reach from eastern Cuba to
the Gulf of Honduras today, stall from Hispaniola to Nicaragua
tonight, then dissipate by Thursday. High pressure will build
southeastward from the Gulf of Mexico into the northwest Caribbean
by the end of the week. Fresh to strong trades continue across
the waters east of 80W, except for near gale-force winds north of
the A-B-C islands.


Gale force winds are N of 28N over the western Atlantic behind a
cold front that extends from 31N67W to eastern Cuba, and N of 27N
within 150 nm east of the front. An area of scattered to numerous
showers and a few thunderstorms is within 200 nm ahead of the
front. A broad area of high pressure prevails across the central
and eastern Atlantic, anchored by a 1023 mb high centered near
27N43W, and another 1023 mb high centered near 28N25W.

The convection associated with the front will shift eastward and
diminish today as the front continues pushing east. The front
will reach from 30N65W to eastern Cuba today, then stall from
26N65W to E Cuba tonight. High pressure building from the
northwest will cause the northern part of the front to begin
moving east again by Wednesday night.

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