Atlantic Tropical Weather Discussion (Text)

AXNT20 KNHC 270605

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
105 AM EST Mon Jan 27 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 0000 UTC surface analysis and satellite imagery through 
0545 UTC.


The monsoon trough emerges offshore of Liberia near 05N09W then 
continues to 03N17W. The ITCZ extends from 03N17W to the coast of
Brazil near 01S44W. Scattered moderate convection 200 nm south of
the monsoon trough. Near the coast of Brazil, scattered moderate 
to strong convection extends from 02S-01N between 31W westward. 


A 1012 mb low pressure is centered near 27N92W with a trailing 
cold front extending SW to 23N97W just N of Tampico, Mexico and
a warm front extends to the east of the low to 28N89W. Scattered 
showers and isolated tstorms are east of the front from 23N to the
northern Gulf coast along the FL Panhandle. To the south, a 
surface trough is near 19N95W to 22N96W with few showers near the 
trough and the coast of Mexico. In the eastern Gulf coast, a 1019 
mb high pressure is present near 29N84W. ASCAT data indicates 
moderate easterly winds along the eastern Gulf and behind the cold
front, while light and gentle winds prevail in the Bay of 

Low pressure in the NW Gulf will shift offshore and move across 
the northern and central Gulf through Mon night, reaching S FL by
early Tue while the front sags S and slowly dissipates. Another 
cold front will move off the Texas coast Tue night, weakening by 
the time it reaches the SE Gulf Wed night ahead of a third front 
which may impact the basin by the end of the week.


Light to moderate winds dominate the Caribbean basin, except near 
the coast of Colombia where fresh northeasterly winds are occurring.
A surface trough extends from 11N69W to 17N66W and is supporting 
scattered showers within 180 nm east of the trough axis. Scattered
showers are noticeable over Puerto Rico to the north of the trough,
across Hispaniola and the US Virgin Islands. Upper-level ridging 
dominates across the basin with abundant drier air-mass limiting 
convection west of 49W.

Relatively weak high pressure across the region will maintain 
rather quiet conditions over the forecast waters allowing for 
generally gentle to moderate winds, except for fresh winds near 
the coast of Colombia during the afternoons and night time hours 
through Wed, increasing to fresh to strong speeds on Thu night 
through Fri night. 


A cold front enters the forecast area from 31N69W south to 23N76W 
in the central Bahamas, then weakens to 23N80W near the coast of 
Cuba. Scattered showers are within 90 nm of the front. Another 
cold front is over the central Atlantic extending from 31N40W to 
23N49W, then stalls to 17N58W. Scattered showers are within 90 nm
of this front north of 21N to 31N between 43W-47W. To the east, a
surface ridge prevails, anchored by a 1027 mb high centered near 

A cold front extending from near 31N68W to the central Bahamas 
will drift E and dissipate through Mon. Another cold front will 
move into the northern portion by Mon night, eventually stalling 
along 26N by mid-week and then lifting northward, with a 
reinforcing front dropping S Thu night and Fri.


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Page last modified: Monday, 27-Jan-2020 06:05:30 UTC