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Tropical Atlantic & Pacific Basin Outlooks & Discussions

Tropical Weather Outlook
Atlantic - Caribbean - Gulf of Mexico
ZCZC MIATWOAT ALL
TTAA00 KNHC DDHHMM

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
700 PM EST Sun Nov 30 2025

For the North Atlantic...Caribbean Sea and the Gulf of America:

Tropical cyclone formation is not expected during the next 7 days.

This is the last regularly scheduled Tropical Weather Outlook of the
2025 Atlantic Hurricane Season. Routine issuance of the Tropical
Weather Outlook will resume on May 15, 2026. During the off-season,
Special Tropical Weather Outlooks will be issued as conditions
warrant.

$$
Forecaster Bucci
NNNN
Tropical Weather Discussion
Atlantic - Caribbean - Gulf of Mexico
000
AXNT20 KNHC 152028
TWDAT 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0015 UTC Tue Dec 16 2025

Tropical Weather Discussion for North America, Central America
Gulf of America, 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 
2000 UTC.

...SPECIAL FEATURES...

Western Atlantic Significant Swell Event: An arctic cold front 
extends from near 31N62W to the central Bahamas and to the
southern Straits of Florida. Strong high pressure is building in 
behind the front. Gale-force winds that were over the waters N of
30N and W of the front to 73W have diminished below gale-force
while gale-force winds persist N of 31N. This system and the
associated winds continue to support large, fresh northerly 
swells of 12-17 ft W of the front and higher N of 31N with wave
periods of 8-11 seconds. The large northerly swell will reach the
islands of the northeast Caribbean late Tue night into early Wed 
as it merges with easterly trade wind swell moving through the 
regional waters. Seas will begin to gradually subside from NW to 
SE during the middle of the week. Please read the latest High Seas
Forecast issued by the National Hurricane Center at website 
https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml for more 
information.

East Atlantic Significant Swell Event: Large, long-period north
to northeast swell mixed with northwest swell continues to affect
most of the eastern tropical and subtropical Atlantic. Seas of 12
ft or greater are currently from 05N to 24N between 30W and 53W,
peaking around 13 ft per recent satellite altimeter data. Global 
wave models show northerly swell of 14 to 16 seconds mixing with 
northeast swell of 9 to 10 seconds across this area. With 
persistent fresh to strong northeast trade winds, the area of 12 
ft or greater seas will expand westward to near 50W tonight before
they slowly subside from NE to SW going into Tue. For information
east of 35W please read the latest High Seas Forecast issued by 
Meteo-France at website: 
https://wwmiws.wmo.int/index.php/metareas/affiche/2. For 
information west of 35W, please read the latest High Seas 
Forecast issued by the National Hurricane Center at website:
https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml.

...MONSOON TROUGH/ITCZ...

The monsoon trough axis enters the Atlantic near 07N12W and 
continues southwestward to 05N20W, where it transitions to the 
ITCZ to 03.5N35W to the coast of Brazil near 03.5N51W. Numerous 
moderate to isolated strong convection is seen from 01N to 08.5N 
east of 20W to inland over portions of western Africa. Scattered 
moderate convection is seen from S of 05N between 20W and 37W.

...GULF OF AMERICA...

An arctic cold front continues to push southward from the southern
Straits of Florida to along the NW coast of Cuba to the Yucatan
Channel and northern portion of the Yucatan Peninsula to the
southern Bay of Campeche. A tight pressure gradient remains along
and offshore of Tamaulipas and Veracruz where fresh to near gale-
force NW-N winds are with moderate to fresh N-NE winds elsewhere
across the basin and behind the front. Seas are 7-11 ft from 21N
to 27N per recent altimeter and buoy observations with mainly 3-6
ft seas elsewhere.

For the forecast, a cold front over the southeast Gulf will exit 
the basin tonight. Strong northerly winds and rough seas following
the front will decrease by midweek. High pressure will dominate 
the Gulf region in the wake of the front Tue through Thu. The next
cold front is expected to move into the NW Gulf Thu evening and 
reach from near Tampa Bay to SE Texas Fri evening then lift 
northward and dissipate. 

...CARIBBEAN SEA...

A strong arctic cold front is moving through the western 
Atlantic, with a large area of strong high pressure building in 
behind. The front is near the NW portion of the basin along NW
Cuba and the Yucatan Channel to the northern Yucatan Peninsula.
This front has weakened the pressure gradient slightly ahead of it
with mainly moderate to fresh trades noted across most of the
basin, highest in the S-central portion where the pressure
gradient is the tightest due to low pressure near the northern
coast of Colombia. Seas are 5-7 ft in the central Caribbean due to
the persistent fetch of the trades, and 4-6 ft elsewhere except
slightly lower between Cuba and Jamaica including the approach to
the Windward Passage. Numerous moderate to isolated strong 
convection is confined to the far southwestern section of the sea,
S of about 12N and W of Colombia due to the combination of low-
level convergence of the trade winds along with instability 
provided by the close proximity of the eastern Pacific Ocean 
monsoon trough that extends eastward across southern Costa Rica 
and across Panama. Similar convection is also noted in the Gulf of
Honduras due to deep layered troughing ahead of the front along
with upper level diffluence off to the SE.

For the forecast, fresh trade winds and moderate seas will 
prevail over the south central Caribbean through Tue as Atlantic 
high pressure remains well NE of the region. Elsewhere, fresh to 
locally strong trade winds and rough seas in large E swell will 
persist over the tropical Atlantic waters, through the Atlantic 
passages and into the eastern part of the basin through Tue. A 
cold front will enter the northwestern Caribbean this evening, 
accompanied by increasing winds and building seas. This front is 
expected to reach from central Cuba to N Belize Tue morning, then 
will stall and gradually dissipate through Wed. High pressure will
build into the W Atlantic Wed through Fri to bring a return to 
fresh to strong trades across the central Caribbean.

...ATLANTIC OCEAN...

Please see the Special Features section for more information on
two significant swell events, one for a portion of the northwest 
Atlantic waters, and the other in the eastern Atlantic.

An arctic cold front extends from near 31N62W to the central 
Bahamas and to the southern Straits of Florida. In addition to the
above mentioned swell behind the front, fresh to strong N-NE winds
are also present. N of 29N and E of the front to 50W, fresh to
strong S-SW winds are present ahead of the front. Scattered
moderate convection is noted on conventional satellite imagery N
of 26N and E of the front to 52W. High pressure of 1030 mb is N of
the area near the Azores, with an associated ridge bridging across
a front that extends from the Iberian Peninsula through 31N17W to
28N26.5W to 31N34W. This high combined with lower pressures to the
S with the monsoon trough and ITCZ supports a large area of fresh
to strong trades S of 26N and E of 53W where large swells are
present as detailed above. Fresh to strong N-NE winds are also
noted N of the front. Mainly moderate winds and 6-10 ft seas are
present across the remainder of the open waters, except gentle
winds and 5-8 ft seas S of 29N and W of 60W to the arctic cold
front.

For the forecast W of 55W, a cold front extends from near 31N62W 
to W Cuba. Strong to near gale- force northerly winds will 
diminish tonight. The front will stall from 30N55W to the SE 
Bahamas and central Cuba by Tue morning, then slowly dissipate 
through Wed afternoon. Large N swell will build across the 
regional waters behind the front through Tue before subsiding. The
Bermuda High will dominate the regional waters Thu through Fri. 

$$
Lewitsky
  
Tropical Weather Outlook
Eastern Pacific
ZCZC MIATWOEP ALL
TTAA00 KNHC DDHHMM

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1000 PM PST Sun Nov 30 2025

For the eastern and central North Pacific east of 180 longitude:

Tropical cyclone formation is not expected during the next 7 days.

This is the last regularly scheduled Tropical Weather Outlook of the
2025 Hurricane Season. Routine issuance of the Tropical Weather
Outlook will resume on May 15, 2026 for the eastern North Pacific
and on June 1, 2026 for the central North Pacific. During the
off-season, Special Tropical Weather Outlooks will be issued as
conditions warrant.

$$
Forecaster Gibbs
NNNN
Tropical Weather Discussion
Eastern Pacific
000
AXPZ20 KNHC 151959
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2205 UTC Mon Dec 15 2025

Tropical Weather Discussion for the eastern Pacific Ocean from
03.4S to 30N, east of 120W including the Gulf of California, and
from the Equator to 30N, between 120W and 140W. The following
information is based on satellite imagery, weather observations,
radar, and meteorological analysis.

Based on 1800 UTC surface analysis and satellite imagery through
1900 UTC.

...SPECIAL FEATURES...

Gulf of Tehuantepec Gale Warning: The pressure gradient between 
the high pressure over Mexico and the eastern north Pacific 
monsoon trough is sustaining gale-force northerly winds across 
the Gulf of Tehuantepec which are forecast to continue through 
Tue morning. Winds may peak around 45 night overnight. By Tue 
afternoon, the high pressure will begin to shift eastward and 
weaken. Rough seas will are expected with the strongest winds, 
peaking around 16 ft tonight. Please read the latest High Seas 
issued by the National Hurricane Center at website: 
https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more 
information.
 
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

The monsoon trough extends from 08.5N78W to 07N95W. The ITCZ 
continues from that point to 08N111W to 07.5N125W. A surface 
trough is analyzed from 15N128W to 06N126W. The ITCZ then 
resumes W of the trough from 07N127.5W to beyond 06N140W. 
Scattered moderate convection is noted from 05N to 10.5N between
77W and 86W, from 10N to 12N between 109W and 112W, from 07.5N to
10N between 116W and 120W, and from 09N to 12N between 124W and
127W.

...OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A Gale Warning is in effect for the Gulf of Tehuantepec. Please 
see the Special Feature section for more details.

A 1027 mb high center is analyzed just N of the area near 
31N129W. Its associated ridge extends to near the Revillagigedo 
Islands per ASCAT scatterometer data. The related pressure 
gradient is allowing for gentle to moderate northwest to north 
winds and slight to moderate seas over the Mexican offshore 
waters N of 17N, except locally fresh in the central Gulf of
California per the ASCAT data due to a locally tight pressure
gradient between the ridging and troughing along the eastern
shore of the Gulf of California. Light and variable winds and 
slight seas prevail elsewhere from 12N to 17N outside of the 
Tehuantepec area.

For the forecast, gale-force winds over the Gulf of Tehuantepec 
will prevail through Tue morning. Elsewhere, mainly gentle to 
moderate winds and moderate seas will prevail through the middle 
of the week. Fresh to strong northerly winds and rough seas will 
develop mainly just beyond the offshore waters of Baja 
California Norte by the middle part of the week. Moderate to 
fresh winds will pulse near Cabo Corrientes during the middle of 
the week. Fresh to at least strong gap winds and rough seas may 
return in the Gulf of Tehuantepec by the end of the week into 
next weekend.

...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, 
AND WITHIN 750 NM OF ECUADOR...

Fresh to strong northeast winds prevail in the Gulf of Papagayo 
region as high pressure builds in N of the Caribbean with lower 
pressures along the monsoon trough over southern Costa Rica and 
Panama. Light to gentle winds and moderate seas are elsewhere N 
of 08N. S of 08N, gentle to moderate southerly winds and 
moderate seas prevail, except slight seas nearshore Colombia and 
eastern Panama. Active convection is present near Panama and 
Costa Rica as described above with locally higher winds and seas 
possible.

For the forecast, building high pressure N of the Caribbean and
lower pressures near the monsoon trough will continue to support
pulsing fresh to strong easterly trade winds and moderate seas 
across the Gulf of Papagayo through midweek, possibly returning 
Fri night into next weekend. Rough seas in the far offshore 
waters of Guatemala will persist through Tue due to a Gulf of 
Tehuantepec gale-force gap event. Moderate to fresh northerly 
winds will pulse in the Gulf of Panama this week. Gentle to 
moderate winds and slight to moderate seas will prevail 
elsewhere.

...REMAINDER OF THE AREA...

A 1027 mb high center is analyzed just N of the area near 31N129W.
Its associated ridge extends to near the Revillagigedo Islands 
per ASCAT scatterometer data. The pressure gradient between the 
high and relatively lower pressures associated to a trough that 
extends in the W-central waters as described above is bringing 
moderate to fresh trade winds from 09N to 20N and W of 120W or 
so, locally strong near the northern portion of the trough as
seen on recent ASCAT data. Rough seas prevail over these waters 
in mixed long period swell along with shorter period wind 
generated seas. Moderate southerly winds and moderate seas are 
occurring S of the monsoon trough and ITCZ. Mainly gentle to 
moderate winds and moderate seas prevail across the remainder of 
the open waters.

For the forecast, the surface trough in the W-central waters will
move westward through the early part of the week while 
weakening. High pressure will build further over the northern 
waters into the middle portion of the week leading to a 
tightening of the pressure gradient that will cause fresh to 
strong easterly winds and rough seas over much of the tradewind 
belt west of 120W. Over the eastern part of the area, fresh to 
strong easterly winds and rough seas associated with the gale- 
force gap wind event in the Gulf of Tehuantepec will spread 
westward to near 106W from 08N to 12N through Tue. Seas will
build to rough near 30N140W this evening through Tue night in W-NW
swell. Meanwhile, a tight pressure gradient will develop 
offshore southern California leading to fresh to locally strong 
winds and rough seas in the N-central waters mid-week. Marine
conditions should improve overall during the upcoming weekend as
the pressure gradient slackens.
 
$$
Lewitsky
  
Tropical Weather Discussion
Central Pacific

No Storms to Report




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