Atlantic Tropical Weather Discussion (Text)

AXNT20 KNHC 191033

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
533 AM EST Wed Feb 19 2020

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 
1030 UTC.


...Caribbean Sea Gale Warning...

The combination of high pressure over the subtropical Atlantic and
relatively low pressure over northern South America is expected 
to produce strong winds near the coast of Colombia during the next
couple of days. The winds are expected to be strongest and reach 
gale force at night with sea heights forecast to peak as high as 
16 ft. Low pres developing off the SE coast of the United States 
will weaken the ridge over the western Atlc enough to allow the 
gales to abate by Thu. Please read the latest High Seas Forecast,
under AWIPS/WMO headers MIAHSFAT2/FZNT02 KNHC, or visit our 
website at https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml for more 


The monsoon trough extends from the coast of Guinea near 10N14W 
to 06N17W. The ITCZ continues from 06N17W to 00N28W to the coast 
of Brazil near 03S40W. Widely scattered moderate convection is 
from 03N-05S between 22W-46W.


As of 19/0900 UTC, a cold front is over the NW Gulf of Mexico from
S Louisiana near 29N92W to S Texas near 27N97W. Scattered showers
are within 60 nm of the front. 20 kt N winds are N of the front.
5-15 kt SE winds are over the remainder of the Gulf. Elsewhere, 
radar imagery shows scattered showers along the coast of central 
Florida near Tampa from 26N-29N between 82W-84W. 

A cold front along the Texas coast will slowly move southeastward
through tonight. Reinforcing cold air will then push the front 
quickly across the remainder of the Gulf Thu through Fri. Gale 
force conditions are possible over the offshore waters of Tampico 
Fri morning, and Veracruz Fri evening. Expect strong N-NE winds 
elsewhere behind the front and building seas through early Sat. 


A gale warning is currently in effect for portions of the south-
central Caribbean Sea. For details on this hazard, see the 
warning section above. Otherwise, 10-30 kt tradewind flow 
continues across the Caribbean Sea. Weakest winds are over the
Yucatan Channel. Scattered showers are moving within the 
tradewind flow south of 19N. 

High pressure north of the area will support fresh to strong 
winds across the central Caribbean through Thu, pulsing to gale 
force off the coast of Colombia at night. Winds and seas will 
diminish across the Caribbean and the Tropical N Atlantic Thu 
through Fri night. A cold front in the Gulf of Mexico will reach 
the Yucatan Channel Fri night, and move across the NW Caribbean 
through Sat night. 


A 1035 mb high is centered over the E Atlantic near 39N17W. A
ridge axis extends WSW to N Florida. Of note in the upper levels,
an upper level trough is over the central Atlantic from 30N56W to
20N57W. Scattered showers are within 360 nm E of the trough axis. 

High pressure north of the area will support fresh to strong winds
near the Windward Passage through tonight. A cold front moving 
off the SE U.S. coast today will stall near 30N through Thu. 
Reinforcing cold air will push a strong cold front across the 
forecast area Thu night through Sat. Near gale force winds are 
expected on both sides of the front on Fri. Winds will gradually 
diminish across the region Sat and Sun. Large NE swell is expected
to impact much of the area this weekend. 


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Page last modified: Wednesday, 19-Feb-2020 10:34:11 UTC