Tropical Weather Discussion
Issued by NWS
AXNT20 KNHC 262336
Tropical Weather Discussion
NWS National Hurricane Center Miami FL
805 PM EDT Sun Mar 26 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
As of 26/2100 UTC, a 1009 mb low is centered N of Hispaniola
near 24N69W. A gale is well N of the center from 26N to 27N
between 65W and 69W with NE to E winds 30 to 35 KT. Seas are 13
to 17 ft. Gale conditions are forecast through the next 48
hours, with higher intensification thereafter. The low will
track N then NE over the next 48 hours. Please see the latest
High Seas Forecast product under AWIPS/WMO headers HSFAT2/FZNT02
KNHC for more details.
The Monsoon Trough extends from the African coast near 07N12W to
04N18W. The Intertropical Convergence Zone extends from 04N18W
to 00N29W to the South American coast near 03S43W. Widely
scattered moderate convection is within 210 nm of the ITCZ axis.
GULF OF MEXICO...
As of 26/2100 UTC, a 1027 mb high is centered over the W
Atlantic near 35N73W. A surface ridge axis extends W from the
high to E Texas. 10-15 kt SE surface flow is over the Gulf of
Mexico. Radar imagery shows scattered showers over S Florida,
and over the Florida Panhandle. Fair weather is over the
remainder of the Gulf. In the upper levels, a broad ridge is
over the Gulf with upper level moisture over S Texas and strong
subsidence elsewhere. Expect little change over the next 24
A surface trough extends S from the low near 24N69W to
Hispaniola near 18N70W. Scattered showers are over Hispaniola.
Scattered showers are also over the Leeward Islands, Puerto
Rico, Jamaica, and E Cuba. Widely scattered moderate convection
is inland over NW Venezuela, and N Colombia. Mostly fair weather
is over the remainder of the Caribbean and Central America. In
the upper levels, the base of an upper level trough is over the
north central Caribbean and Hispaniola. Zonal flow is over the
remainder of the Caribbean and Central America. Upper level
moisture is inland over NW Venezuela, and N Colombia. Strong
subsidence is over the Caribbean Sea. Expect in 24 hours for the
surface trough to lift N of Hispaniola, while scattered showers
and thunderstorms persist over NW Venezuela, and N Colombia.
Presently scattered showers are over Hispaniola. The surface
trough will be N of the island in 24 hours, however, low level
moisture in the form of scattered showers may persist over the
A surface trough extends N of the low near 24N69W to 29N66W.
Scattered showers are within 90 nm of this trough. A gale is
near the northern portion of the trough. See above. A 1027 mb
high is over the W Atlantic near 35N73W. Another 1025 mb high is
centered over the the central Atlantic near 32N56W. The tail end
of a dissipating cold front is over the central Atlantic from
31N31W to 28N38W. Scattered showers are within 30 nm of the
front. A 1020 mb high is over the E Atlantic near 28N25W. Expect
over the next 48 hours for the low at 24N69W to be the dominate
weather feature in the Atlantic.
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