[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 072329
TWDAT

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
629 PM EST Tue Mar 7 2017

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
2315 UTC.

...SPECIAL FEATURES...

...Caribbean Gale Warning...

A strong pressure gradient prevails across the Caribbean generated
between the high pressure centered over the west Atlantic near
34N70W and a low pressure analyzed across northwestern South
America. Near-gale to gale-force winds are expected to develop each
night and early morning through Thursday night within about 90 nm
of the NW coast of Colombia. These winds are forecast to go below
gale criteria by the late morning hours. See the latest NWS High
Seas Forecast under AWIPS/WMO headers MIAHSFAT2/FZNT02 KNHC for
more details.

...ITCZ/MONSOON TROUGH...

The Monsoon Trough extends from the African coast near 07N13W to
04N16W. The Intertropical Convergence Zone extends from 04N16W to
the coast of South America near 01S45W. No significant convection
is related to these boundaries at this time.

...DISCUSSION...

GULF OF MEXICO...

The southwestern periphery of a surface ridge anchored by a 1033
mb high centered across the west Atlantic near 34N70W is producing
mostly fair weather across the basin. Moderate to fresh
anticyclonic flow prevails across the Gulf. A cold front is
approaching the coast of Texas with abundant convection at this
time. This front is expected to enter the northwest Gulf waters
tonight and move across the northern half of the basin during the
next 24 hours. Little change in weather conditions is expected
over the southern half of the basin.

CARIBBEAN SEA...

Near-gale to gale-force winds will continue pulsing over the
south-central Caribbean through Thursday. Please refer to the
section above for details. A broad high pressure prevails across
the western Atlantic and extends south reaching the Caribbean.
Satellite and Doppler Radar imagery depict isolated showers
prevailing near Puerto Rico and Hispaniola. Fair weather prevails
across the remainder of the area. Scatterometer data depicts
fresh to strong northeasterly winds prevailing across the basin.
Expect little change during the next 24 hours.

...HISPANIOLA...

Isolated showers are observed across the island and adjacent
waters due to the remnants of a cold front. Expect for this
activity to continue through the night.

ATLANTIC OCEAN...

A broad area of high pressure prevails across the west Atlantic
centered by a 1033 mb high near 33N70W. To the east, a cold front
extends from 32N36W to 19N57W. Isolated showers are observed along
this boundary. A surface ridge prevails across the remainder of
the basin anchored by a 1029 mb high centered near 41N11W. Expect
for the cold front to continue moving east. A new cold front will
enter the west Atlantic with convection by Wednesday morning.

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

$$

ERA
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