[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 052350
TWDAT

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0005 UTC Mon Feb 6 2023

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 31N. The following information is based on satellite
imagery, weather observations, radar and meteorological analysis.

Based on 1800 UTC surface analysis and satellite imagery through
2350 UTC.

...SPECIAL FEATURES...

Caribbean Sea Gale Warning: The pressure gradient between the
subtropical ridge north of Puerto Rico and lower pressures in
Panama and NW Colombia will sustain nighttime gale-force winds in
the south-central Caribbean Sea, near the coast of Colombia,
through midweek. Seas are forecast to peak near 11 to 13 ft
during the strongest winds. Please read the latest High Seas
Forecast at https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml for more
information.

Atlantic Gale Warning: An area of low pressure is developing off
the SE US Coast. The low pressure is forecast to move NE and strengthen,
and will produce gale-force winds tonight into Mon morning N of
30N between 69W and 76W. Seas are currently 7-11 ft, and are
expected to build to 10-12 ft by Mon morning. Winds will diminish
below gale force by Mon afternoon. Please read the latest High
Seas Forecast at https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml for
more information.

Atlantic Significant Swell: A stationary front extends from
31N46W to 25N65W to the central Bahamas near 25N76W. Large and
long period swell is analyzed north of the frontal boundary. Seas
are 8-15 ft west of the front to 68W, the highest seas being
located N of 26N to 58W. Swell direction is NW with a period of
12-16 seconds. Aside from the swell, fresh to locally strong NE
winds follow the front. Please read the latest High Seas Forecast
at https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml for more
information.

...MONSOON TROUGH/ITCZ...

The monsoon trough enters the Atlantic through the coast of
Guinea near 10N14W and extends southwestward to 05N18W to 01N22W.
The ITCZ begins at 01N22W and continues to 00N36W to 01S45W. Scattered
moderate convection is noted from 05S to 12N between 10W and 18W.

GULF OF MEXICO...

Surface ridging has started to weaken across the eastern half of
the basin where a center low pressure has developed just SW of
the Tampa Bay area near 27N85W. This is generating widely
scattered showers E of 85W and S of 29N. A 1023 mb high is off the
coast of southern Louisiana which ridging is supporting mainly
light to gentle variable winds W of 91W. Between 86W and 91W,
moderate to locally fresh N to NE winds are observed along with
seas of 4-5 ft.

For the forecast, high pressure will continue building across the
basin from west to east. As the high moves E of the area, fresh
to locally strong SE to S return flow will develop Mon night into
Tue, with the strongest winds occurring in the western Gulf. Looking
ahead, a cold front will enter the NW Gulf on Wed with strong to
near-gale N winds possible behind it and quickly diminishing as
the front reaches the central Gulf late Wed into early Thu.

CARIBBEAN SEA...

Please read the Special Features section above for more details
about the ongoing Gale Warning off NW Colombia.

A strong high pressure system centered north of the Caribbean Sea
supports fresh to strong trades in the central Caribbean Sea,
with near gale force winds occurring off NW Colombia. Seas are
6-8 ft in the central Caribbean, and 8-10 ft off NW Colombia.
Moderate to fresh trades and 5-7 ft seas are noted in the E
Caribbean. In the SW Caribbean, NE winds are moderate and seas are
4-6 ft. In the NW Caribbean, E winds are light to gentle with 2-4
ft seas.

For the forecast, the strong pressure gradient will continue
across the central Caribbean Sea through the forecast period.
Strong trade winds will persist over the south-central Caribbean
Sea, pulsing to gale force off Colombia nightly into midweek. Seas
will build to near 12 ft during the strongest winds. Strong
easterly winds will also pulse off southern Hispaniola and
occasionally in the eastern Caribbean into midweek. Building ridge
will result in fresh to strong winds in the NW Caribbean Tue into
Wed.

ATLANTIC OCEAN...

Please read the Special Features section above for details on
the Gale Warning in the W Atlantic and Significant Swell in the
Central and Western Atlantic.

The W Atlantic Waters northeast of the Bahamas and Turks and
Caicos are experiencing fresh to strong E winds associated with
the frontal boundaries described in the Special Features section.
Seas exceed 8 ft north of a line from 31N45W to 22N71W and along
the Atlantic Exposures of the Bahamas and Turks and Caicos to
31N80W. A surface trough and stationary front over the Florida
Peninsula is producing some scattered showers and tstorms between
the coast of Florida and the Northern Bahamas.

Elsewhere, moderate to fresh NE winds, evident on scatterometer
data, prevail over the remainder of the tropical Atlantic, with
seas of 6-7 ft. The exception is an area of locally strong NE winds
south of 20N and west of 30W, which has persisted long enough to
build seas of 8-10 ft in E swell within this area.

For the forecast west of 55W, the frontal boundary described in
the Special Features section is forecast to weaken today. The low
pressure centered off the SE US Coast will move NE into the NW
Atlantic and strengthen today, with gale- force winds developing
late tonight into early Mon morning N of 30N and between 69W and
76W. Winds will diminish below gale force by Mon afternoon.

$$
Ramos
This weather bulletin was brought to you by:
www.nashvilleweather.net