TROPDISC: Gale and Swells
From 
Dumas Walker@21:1/175 to 
All on Tue Feb 18 08:21:00 2025
 
 
884 
AXNT20 KNHC 181057
TWDAT 
Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1215 UTC Tue Feb 18 2025
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 0600 UTC surface analysis and satellite imagery through 1050 UTC.
...SPECIAL FEATURES...
Gulf of Mexico Gale Warning: A strong cold front is forecast to
move into the NW Gulf tonight. The front will sweep across the 
basin through Thu night. A trough will likely develop from its
remnants over the southwestern Gulf on Fri and linger through Sat
night while weakening. Near gale north winds with frequent gusts 
to gale force will follow the front over the NW Gulf Wed while 
gale force north winds will develop west of the front off 
Tampico, Mexico Wed and Wed night and off Veracruz, Mexico Wed 
night through Thu night. These winds will produce rough to very 
rough seas, peaking around 14 ft Wed night off Tampico. Winds and 
seas will diminish during the weekend.
Atlantic Ocean Significant Swell Event: Large, long-period NW 
swell behind a cold front is sustaining seas of 12 to 18 ft 
across the central and eastern subtropical Atlantic, north of 16N
between 13W and 42W. This swell will subside very gradually while
shifting eastward toward the Canary and Cabo Verde Islands 
today. Reinforcing NW swell of 12 to 18 ft will follow by Wed 
over the waters north of 27N between 35W and 55W, then subside to 
12 to 15 ft as it moves east of 35W Fri.
...MONSOON TROUGH/ITCZ... 
The monsoon trough enters the Atlantic through the coast of 
Guinea near 09N13W and continues southwestward to 02N20W to 
00N34W. The ITCZ extends from 00N34W to 03S42W. Scattered 
moderate convection is noted from 05S to 03N between 13W and 42W.
...GULF OF MEXICO...
Please read the Special Features about the Gale Warning over the
western Gulf.
A stationary front extends from the Straits of Florida and then  
weakens to the Bay of Campeche. A broad ridge extends from off 
the Carolinas towards the coast of Texas and across the southern
Gulf. This pattern is supporting moderate E to SE winds over the 
western and southeast Gulf, and gentle NE winds in the northeast 
Gulf. Seas are slight to moderate basin-wide, highest over the SW waters.
For the forecast, the stationary front will dissipate today. 
Fresh to strong SE winds will develop over the north-central Gulf
later today ahead of the next cold front forecast to move into 
the NW Gulf tonight and sweep across the basin through Thu night. 
A trough will likely develop from the front remnants over the 
southwestern Gulf on Fri and linger through Sat night while 
weakening. Near gale north winds with frequent gusts to gale force
will follow the front over the NW Gulf Wed while gale-force north
winds will develop west of the front off Tampico, Mexico Wed and 
Wed night and off Veracruz, Mexico Wed night through Thu night. 
Elsewhere, fresh to strong winds are expected through the period, 
becoming more confined to the waters north of 22N and west of 90W 
Fri through Sat night.
...CARIBBEAN SEA...
A broad subtropical ridge over the central Atlantic extends
southwestward into the Caribbean Sea, supporting fresh to strong 
easterly trade winds across the south-central Caribbean, with
near-gale force winds off Colombia. Seas in these waters are 6-10 
ft. Moderate to fresh easterly breezes and moderate seas are 
occurring in the north-central and eastern Caribbean. Moderate or
weaker winds and slight to moderate seas are present elsewhere.
For the forecast, mostly fresh trade winds and moderate seas are 
expected across the central, eastern and portions of the 
southwestern part of the basin through Sat night, except for 
strong to near gale-force winds and rough seas offshore of 
Colombia and in the Gulf of Venezuela. Gentle to moderate winds 
along with slight to moderate seas will prevail in the 
northwestern Caribbean through Thu night. A cold front will sink 
into the Yucatan Channel and vicinity waters Thu night into Fri, 
reach the Windward Pasage Fri night into Sat before dissipating 
Sat night. Strong high pressure building in the wake of the front 
N of the area will lead to the development of fresh to strong NE 
winds in the Lee of Cuba and the Windward Passage Fri evening 
through Sat night. Otherwise, rough seas in east swell will 
continue east of the Lesser Antilles through Fri night, subsiding afterward.
...ATLANTIC OCEAN...
Please refer to the Special Features section for information on
the Significant Swell.
A cold front extends from 31N58W to Andros Island where it stalls
to the Straits of Florida. Moderate to fresh SW winds are ahead of
the front N of 27N while rough seas to 9 ft are ongoing between
55W and 71W. The subtropical ridge is displaced southeastward 
ahead of the front, anchored by a 1022 mb high pressure centered 
near 26N47W, and extending westward to 61W. Otherwise, in addition
to the large NW swell over the central and eastern subtropical
waters described in the Special Features section, combined seas 
of 4 to 8 ft are noted between 55W and 72W south of 22N primarily in NW swell.
For the forecast west of 55W, the cold front will become fully 
stationary and weaken from 29N55W to 27N64W early Wed. Fresh SW 
winds ahead of the front north of 29N will diminish this morning 
as the front continues to move eastward. Fresh to strong southeast
winds will develop over the central and northeast Florida 
offshore waters Wed ahead of the next cold front forecast to come 
off the coast Wed afternoon. This front will reach from near 
31N77W to Vero Beach, Florida Wed night, from near 31N63W to the 
southern Bahamas and eastern Cuba Thu night, from near 29N55W to 
the Windward Passage Fri night and begin to weaken as it reaches 
from near 26N55W to 22N64W to the Windward Passage Sat night. 
Fresh to strong winds are expected ahead and behind this second 
front north of about 27N through Fri. Strong high pressure will 
build Sat and Sat night in the wake of the front. The resultant 
tight gradient will bring fresh to strong NE winds to the Straits 
of Florida and the Great Bahama Bank primarily south of 25N Fri 
night into Sat night.
$$
Ramos
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From 
Dumas Walker@21:1/175 to 
All on Thu Feb 20 08:25:00 2025
 
 
817 
AXNT20 KNHC 201049
TWDAT
Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1215 UTC Thu Feb 20 2025
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 0600 UTC surface analysis and satellite imagery through 1030 UTC.
...SPECIAL FEATURES...
Gulf of Mexico Gale Warning:
A strong cold front extends from Venice, Florida southwestward to
23N90W to the central Bay of Campeche. The front will continue to
quickly move southeastward across the remainder of the basin
through tonight. A Gale Warning remains in effect today through
this evening for off Veracruz. These winds will continue to
produce rough to very rough seas, peaking to around 19 ft today
off Veracruz. Winds and seas will diminish during the weekend. 
Atlantic Ocean Significant Swell Event: 
Large NW swell of 12 to 16 ft over the subtropical Atlantic north
of 27N between 35W and 55W will shift eastward, and cover the
waters north of 25N between 25W and 50W today, and north of 17N
east of 35W Fri before gradually subsiding. 
...MONSOON TROUGH/ITCZ... 
A monsoon trough extends from 11N15W to 02N20W. The ITCZ extends 
from 02N20W to 00N30W to 02S40W. Scattered moderate isolated
strong convection is ongoing from 01S to 06N between 03W to 20W.
Scattered moderate convection is elsewhere from 04S to 03N between
20W and 32W. 
...GULF OF MEXICO...
Please read the Special Features section about the Gale Warning in
the Gulf of Mexico.
A strong cold front extends from Venice, Florida southwestward 
to 23N90W to the central Bay of Campeche. A Gale Warning remains 
in effect today through this evening for off Veracruz with rough 
to very rough seas, already peaking to around 19 ft off Veracruz. 
Scattered showers and thunderstorms are active ahead of the cold 
front over the SE Gulf, the Yucatan Peninsula and the Bay of
Campeche. Strong to near-gale force winds follow the front 
elsewhere across the Gulf. Seas range from 8 to 18 ft behind the 
front west of 86W, with the highest wave heights off Veracruz, 
Mexico. Seas ahead of the front over the SE Gulf are 3 to 7 ft 
where winds are light to gentle. 
For the forecast, the cold front will continue to quickly move 
southeastward across the remainder of the basin through tonight. 
Gale force northerly winds will continue off Veracruz through
this evening. Winds and seas will gradually diminish over the 
weekend. A trough is expected to develop from the frontal remnants
over the west-central and SW Gulf on Fri and linger through Sat 
night while weakening. Fresh to strong winds are expected over the
waters north of 22N and west of 90W Fri through Sat night. Low 
pressure may develop along the trough on Sat near southern Texas 
and track NE near the rest of the Texas coast through Sun night 
while weakening. High pressure will settle in over the NW Gulf 
early next week, preceded by a surge of moderate to fresh 
northerly winds from the eastern Gulf to the SW Gulf. 
...CARIBBEAN SEA...
The broad subtropical ridge that has persisted north of the region
for the last several days is weakening and shifting eastward ahead
of a strong cold front moving through the Gulf of Mexico. This
is allowing trade winds across the eastern and central Caribbean 
to diminish a bit, although strong NE to E winds and rough seas 
persist near the coast of northeast Colombia and in the Gulf of 
Venezuela. Moderate to fresh E winds and 5 to 7 ft seas persist 
elsewhere across the Caribbean, except for 2 to 4 ft over the 
northwest Caribbean outside of the Gulf of Honduras where fresh E 
winds are pulsing. 
For the forecast, moderate to fresh trade winds and moderate seas
will continue over most sections of the central and eastern 
Caribbean through Mon night, except for strong to near gale-force 
winds and rough seas offshore of Colombia and within and near the 
Gulf of Venezuela. Gentle to moderate winds along with slight to 
moderate seas will prevail in the northwestern Caribbean through 
tonight, then return Sat night through Mon night. A cold front 
will approach the Yucatan Channel tonight, reach the Windward 
Passage late Fri, stall along western Hispaniola Fri night, then 
gradually lift northward Sat before dissipating Sat night near the
southern Bahamas. Strong high pressure will build in the wake of 
the front N of the area and will lead to the development of fresh 
to strong NE winds in the Lee of Cuba and the Windward Passage Fri
evening through early Sun. Otherwise, rough seas in east swell 
will continue east of the Lesser Antilles through Sat, subsiding afterward.
...ATLANTIC OCEAN...
Please refer to the Special Features section for information on
the Significant Swell.
A cold front extends from 31N76W SW to Melbourne, Florida. Fresh 
to strong S winds and rough seas are evident ahead of the front to
63W, north of 27N. Fresh to locally strong W to NW winds also
follow the front with rough seas to 9 ft. S of 27N and ahead of
the front, winds are from the SE to S and seas are moderate to
rough in E swell. A broad ridge anchored by a 1025 mb high W of 
the Canary Islands and a 1023 mb high E of Bermuda covers the 
remainder subtropical Atlantic waters. Winds over the central and
eastern subtropical waters are gentle to moderate, except between
the Canary and Cape Verde Islands where NE winds are fresh to
strong with seas to 12 ft. Over the tropical Atlantic, trades are
mainly fresh and seas are rough to 10 ft pprimarily in NW swell. 
For the forecast west of 55W, fresh to strong winds will continue
to affect the offshore waters N of 27N through Fri, ahead and 
behind the cold front. The front will reach from Bermuda to 
central Cuba early Fri, from near 31N57W to the Windward Passage 
Fri evening, from 28N55W to western Hispaniola Fri night into Sat 
where it will stall and then gradually lift northward Sat before 
dissipating Sat night near the southern Bahamas. Strong high 
pressure will build Sat and Sat night in the wake of the front. 
The resultant tight gradient will bring fresh to strong northeast 
winds south of 25N, including the Florida Straits and the Great 
Bahama Bank, Fri night into Sat night. Conditions begin to improve
beginning Sun morning as a second but weaker cold front moves 
across the NW offshore waters, reaching from near 31N71W to 
29N74W Mon night. 
$$
Ramos
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