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Atlantic Tropical Weather Discussion



000
AXNT20 KNHC 270604
TWDAT

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0605 UTC Mon Jun 27 2022

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 0000 UTC surface analysis and satellite imagery through 
0530 UTC.

...SPECIAL FEATURES...

Shower and thunderstorm activity has increased in association 
with a tropical wave located along 45W or about 950 miles east- 
southeast of the southern Windward Islands. Numerous moderate to 
isolated strong convection is noted on either side of the wave, 
and mainly from 05N to 12N and between 40W and 55W. A 1007 mb low 
pressure is analyzed along the wave axis near 08N45W. The
disturbance is moving W around 15 kts. Fresh to strong NE winds 
and seas of 8-10 ft are just ahead of the wave. Environmental 
conditions appear conducive for further development, and a 
tropical depression is likely to form during the next couple of 
days before the system reaches the Windward Islands Tuesday night 
or possibly while moving westward across the southern Caribbean 
Sea Wednesday through Friday. A NOAA Hurricane Hunter aircraft is 
scheduled to investigate the system this afternoon. Interests in 
the Windward Islands and along the northeastern coast of Venezuela
should monitor the progress of this system, and tropical storm 
watches or warnings could be required for portions of these areas 
later today. Locally heavy rainfall is possible over the Windward 
Islands and the northeastern coast of Venezuela Tuesday night and 
Wednesday. Refer to the latest NHC Tropical Weather Outlook at 
hurricanes.gov for more details.

East Atlantic Gale Warning: The Azores High combined with a
persisting low pressure area over Western Sahara is inducing 
gale force N winds near the coast of Morocco, in the marine zone 
of Agadir. These gales are expected to continue through 28/00 UTC.
Seas will likely be 10 to 12 ft in the area. Please read the 
latest high seas forecast issued by Meteo-France at website 
http://weather.gmdss.org/II.html for details.

...TROPICAL WAVES...

Four tropical waves are noted between the W coast of Africa and
the Lesser Antilles. One of them has the potential of tropical 
cyclone formation and is described in the Special Features
section.

An Atlantic tropical wave has its axis along 18W, south of 16N 
and moving W at 15-20 kt. Scattered moderate to isolated strong 
convection is observed from 04N to 10N and between 14W and 22W. 

Another tropical wave has its axis along 31W, south of 15N and 
moving W around 15 kt. Scattered moderate convection is noted from
02N to 09N and between 26W and 36W. 

A third tropical wave has its axis along 61W, south of 16N and
moving W around 15 kt. The wave is helping to induce scattered 
showers and thunderstorms over the Lesser Antilles, mainly S of 
Guadeloupe, and across the eastern Caribbean Sea. Enhanced 
rainfall and gusty winds will continue across the Windward Islands
and southern Leeward Islands through this morning and spread 
across the ABC islands later today and tonight. A recent
scatterometer satellite pass indicate that fresh to strong trades
are associated with this feature.

...MONSOON TROUGH/ITCZ...

The monsoon trough passes through the coast of Guinea-Bissau near
12N16W to 11N17W. The ITCZ stretches from 08N19W to 07N30W and
continues from 07N33W to 08N44W and then from 08N47W to 06N53W. 

GULF OF MEXICO...

A surface trough extends from SE Louisiana to a weak 1014 mb low
pressure system near SW Florida. A few showers are seen near the
trough axis. Also, evening storms over the Yucatan peninsula have
moved westward over the eastern Bay of Campeche. The rest of the 
Gulf enjoys fairly tranquil weather conditions. Recent 
scatterometer satellite data indicate that moderate to locally 
fresh NE winds are found over the eastern Bay of Campeche, while 
light to moderate winds are prevalent elsewhere. Seas of 2-3 ft
are noted in the eastern Bay of Campeche and 1-2 ft in the
remainder of the Gulf.

For the forecast, a weak surface trough extends from coastal
Louisiana to Southwest Florida and will drift westward over the 
next few days. Weak low pressure is expected to form from the 
remnants of the trough across the north central Gulf Mon night 
and drift west and inland through Wed. Otherwise, a weak surface 
ridge will dominate the Gulf waters through the weekend and into 
early next week, supporting mainly gentle to moderate winds and 
slight to moderate seas. 

CARIBBEAN SEA...

A tropical wave is currently producing showers and tstorms with
gusty winds across the Lesser Antilles and eastern Caribbean Sea.
See the Tropical Waves section for details. 

The eastern segment of the east Pacific monsoon trough enters the
Caribbean Sea through the coast of northern Costa Rica to NW
Colombia. Satellite imagery depict a few showers within 120 nm of
the monsoon trough. A few showers and isolated thunderstorms that
formed earlier this evening have also spilled over the waters 
south of Cuba and the Windward Passage. Elsewhere, the weather
conditions are fairly tranquil. 

A recent scatterometer satellite pass depict fresh to locally
strong trades across the south-central and eastern Caribbean Sea,
with the strongest winds occurring in the NE Caribbean and
offshore northern Colombia. Seas in the described waters are 4-6
ft. Moderate or weaker winds and seas of 2-4 ft prevail in the
rest of the Caribbean.

For the forecast, fresh trade winds over the south-central Caribbean
will continue through early Mon as the Atlantic ridge remains
centered across the central Atlantic near 40N. Elsewhere, mainly
moderate trades will dominate. A strong tropical wave is
expected to reach the Tropical N Atlantic waters early Tue,
possibly as a tropical cyclone, and move quickly through the
eastern Caribbean Sea Wed through Wed night, through the central
Caribbean Thu and across the western Caribbean late Thu through
Fri. Environmental conditions appear conducive for development, 
and a tropical depression is likely to form during the next few 
days before the system reaches the Windward Islands Tuesday night
or while moving westward across the southern Caribbean Sea 
Wednesday through Friday. 

ATLANTIC OCEAN...

Please see the Tropical Waves and Special Features sections above
for details on the tropical waves traversing the basin and the
gale near the coast of Morocco.

A couple of weak surface trough between Bermuda and the Bahamas
are triggering some showers and isolated thunderstorms, mainly
N of 21N and between 63W and 79W. Satellite-derived wind data 
indicate that some of the strongest storms are producing fresh to 
strong southerly winds. Moderate to fresh trades are present S of
22N and W of 60W, along with seas of 3-5 ft. The rest of the area
W of 60W is experiencing moderate or weaker winds and seas of 2-4
ft.

The rest of the tropical Atlantic is dominated by a strong ridge
positioned between Newfoundland and the Azores. The pressure
gradient between this system and lower pressures across the deep
tropics result in fresh to strong trades S of 23N and between
Africa and the Lesser Antilles. Seas in the area described are
6-11 ft, with the highest seas occurring near 09N45W. The
remainder of the tropical Atlantic experiences moderate or weaker
winds and seas of 3-6 ft.

For the forecast W of 55W, a trough extending from near 30N76W
southwestward to 27N80W will drift westward and weaken during the
next few days. Elsewhere, Atlantic high pressure will remain 
centered across the central Atlantic near 40N. A strong tropical 
wave will reach near 60W late Tue evening, possibly as a tropical 
cyclone, then move quickly through the eastern Caribbean Sea Wed 
through Wed night, and the central Caribbean Thu and Thu evening. 
Expect a broad surge of winds and seas with this wave as it moves 
W across the region.

$$
Delgado