en Español

000
ABNT20 KNHC 151105
TWOAT 

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
800 AM EDT Tue Sep 15 2026

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

Central Subtropical Atlantic:
A trough of low pressure located well east-southeast of Bermuda 
continues to produce disorganized showers and thunderstorms. 
Environmental conditions are forecast to become more conducive for 
development in a few days, and a tropical depression could form late 
this week as the system moves slowly westward to west-northwestward 
over the subtropical Atlantic.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 7 days...medium...40 percent.

$$
Forecaster Beven
  

000
AXNT20 KNHC 151543
TWDAT

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1815 UTC Tue Sep 15 2026

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 1200 UTC surface analysis and satellite imagery through 
1543 UTC.

...TROPICAL WAVES...

A well defined tropical wave is along 56W, south of 21N, moving 
westward at 10-15 kt. Moderate to fresh E winds along with seas 
4 to 6 ft are found in the vicinity of the wave. Scattered 
moderate to isolated strong convection is observed from 11N to 21N
and between 51W and 59W. 

...MONSOON TROUGH/ITCZ...

The monsoon trough enters the Atlantic near 13N17W and continues 
to 07N45W. The ITCZ extends from 07N45W to 10N54W. Scattered 
moderate to isolated strong convection is noted from 05N to 20N 
and east of 26W.
 
...GULF OF AMERICA...

A few showers and isolated thunderstorms are occurring in the
eastern Gulf waters and off Veracruz. A weak high pressure over
the N Gulf supports moderate E to SE winds and 3 to 5 ft seas in 
the Bay of Campeche. Elsewhere, light to gentle winds and slight 
seas prevail.

For the forecast, a strong high pressure over the eastern United 
States will build southward behind a weakening cold front that 
will spread across the eastern Gulf waters. The tighter pressure 
gradient will support fresh to locally strong NE-E winds and rough
seas starting in the NE Gulf tonight and spreading over the 
northern Gulf waters through Thu night. Elsewhere, a diurnal 
trough will move westward offshore the Yucatan Peninsula each 
evening through Thu night, bringing nightly pulses of fresh to 
locally strong NE winds. Conditions will improve across the basin 
Fri, allowing for moderate or weaker winds and slight to moderate 
seas during the weekend. 

...CARIBBEAN SEA...

The interaction between an large upper-level low pressure system
over the north-central Caribbean and tropical moisture support
scattered showers and isolated thunderstorms south of Puerto Rico.
This environment is also generating a few showers in the eastern 
Caribbean, bringing some rain to Puerto Rico and the Virgin 
Islands. 

High pressure north of the area sustains fresh to strong easterly
trade winds and moderate to rough seas across much of the central
Caribbean. Moderate to locally fresh NE-E winds and moderate seas
are occurring in the eastern Caribbean, Windward Passage and lee 
of Cuba. Elsewhere, moderate or weaker winds and moderate seas 
prevail.

For the forecast, tight pressure gradient between the subtropical
ridge located north of the islands and lower pressures in 
Colombia will support fresh to locally near gale-force easterly 
trade winds and moderate to rough seas across much of the central 
Caribbean, with moderate to fresh trades elsewhere from 11N to 
18N. These conditions will persist through the workweek. 
Elsewhere, moderate or lighter winds and slight to moderate seas 
are expected, except moderate to fresh mainly in the evenings near
the Windward Passage and Lee of Cuba through midweek. Winds may 
diminish across the basin by the end of the week into the upcoming
weekend as the pressures gradient relaxes, with seas also 
slightly subsiding. 

...ATLANTIC OCEAN...

A pre-frontal trough is noted ahead of an approaching cold front
over the NW waters producing scattered showers and isolated 
thunderstorms north of 27.5N and between 68W and 76W. Meanwhile, 
a large upper-level low over and east of the SE Bahamas is 
supporting scattered showers south of 26N and between 61W and 
72W. High pressure dominates the rest of the SW North Atlantic, 
sustaining moderate or weaker winds and slight to moderate.

Another upper-level low over the central Atlantic interacts with a
surface trough analyzed along 51.5W and north of 26N, producing 
numerous showers and isolated thunderstorms north of 26N and 
between 46W and 54W. Environmental conditions are forecast to 
become more conducive for development in a few days, and a 
tropical depression could form late this week as the system moves 
slowly west-northwestward over the subtropical Atlantic. The 
system has a medium chance of formation over the next 7 days. A 
strong subtropical ridge centered north of the Azores extends 
southward into the central and eastern Atlantic, supporting 
moderate to fresh easterly winds and moderate seas between 25W 
and 53.5W. Moderate or weaker winds and moderate seas are 
prevalent elsewhere.

For the forecast west of 55W, a cold front is approaching the 
waters off NE Florida and then will become stationary from Bermuda
to the NW Bahamas into Wed. A tight pressure gradient between the
building ridge over the eastern United States and the front will 
result in fresh to locally strong NE winds and seas to build to 
rough N of the Bahamas and W of 70W through early Thu. Conditions 
will improve later Thu into Fri. During the middle to later 
portion of the week, a trough of low pressure is forecast to move 
west- northwestward into the NE portion of the waters, bringing 
thunderstorms while also weakening the high and pressure gradient.


$$
KRV
  

en Español

000
ABPZ20 KNHC 151107
TWOEP 

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Tue Sep 15 2026

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

Active Systems:
The National Hurricane Center is issuing advisories on Tropical 
Depression Norbert, located well east of the Hawaiian Islands, and 
on Tropical Depression Fifteen-E, located well west-southwest of the 
southern tip of the Baja California Peninsula. 

Southwest of Southwestern Mexico:
An area of low pressure could form well offshore of southwestern 
Mexico by the end of the week or over the weekend. Environmental 
conditions appear conducive for some gradual development thereafter 
while the system moves west-northwestward to northwestward at about 
10 mph.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 7 days...low...30 percent.

$$
Forecaster Cangialosi
  

000
AXPZ20 KNHC 151500
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1605 UTC Tue Sep 15 2026

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 1200 UTC surface analysis and satellite imagery through
1500 UTC.

...SPECIAL FEATURES...

Tropical Depression Fifteen-E is centered near 16.1N 123.9W at
15/1500 UTC, moving west at 10 kt. Estimated minimum central
pressure is 1005 mb. Maximum sustained wind speed is 30 kt with
gusts to 40 kt. Peak seas are near 12 ft. Scattered moderate and
isolated strong convection is noted from 10N to 20N between 115W
and 124W. Ongoing shear and entrainment of dry air over the next
several days will prevent this system from developing into a 
tropical storm. However, strong to near- gale force winds and 
rough to very rough seas will accompany Fifteen-E mainly on the 
north side of the low pressure as it continues to move westward 
over the next two to three days. 

Please read the latest High Seas Forecast issued by the National
Hurricane Center at website - 
https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml and the latest 
Fifteen-E NHC Forecast/Advisory and Public Advisory at 
www.hurricanes.gov for more details.

Gulf of Tehuantepec Gale Warning: The pressure gradient between high
pressure building over southern Mexico and the eastern north
Pacific monsoon trough will support strong to near-gale force N 
to NE gap winds across the Gulf of Tehuantepec into Wed, and will
reach minimal gale force Wed night. Rough seas will accompany 
these gap winds.

...TROPICAL WAVES...

The axis of a tropical wave is near 105W from 02N to 17N, moving
west at 10 to 15 kt. Nearby convection is discussed in the
ITCZ/monsoon trough section below.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

The monsoon trough extends from 10N85W to 09N118W. Scattered 
moderate convection is noted from 01N to 10N east of 130W. 

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

Please see SPECIAL FEATURES section above for more on a gale
warning in the Gulf of Tehuantepec. 

Fresh to strong N to NE gap winds, and seas of 6-8 ft, are over 
the northern Gulf of Tehuantepec. Moderate to fresh winds are 
over the northern Gulf of California. Gentle to moderate winds 
and 4-7 ft are noted elsewhere, except 1-3 ft in the central and
southern Gulf.

For the forecast, please see the Special Features section for 
information about the gale warning in the Gulf of Tehuantepec. 
Elsewhere, fresh SE to S winds pulse across the northern Gulf of
California through Wed. Large N swell off Baja California Norte 
near Guadalupe Island will subside through mid week. 

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

Fresh to strong easterly winds, and moderate seas, prevail 
across the Gulf of Papagayo region, extending downstream to near 
90W. Moderate to fresh winds from this gap wind extends to the 
outer offshore waters of El Salvador and Guatemala. Elsewhere, 
moderate or weaker winds and moderate seas are noted. 

For the forecast, a ridge north of the area will continue to 
support pulsing fresh to occasionally strong easterly winds and 
moderate to rough seas across the Papagayo region through mid 
week, then pulsing to moderate to fresh thereafter. Moderate 
winds and seas will prevail elsewhere.

...REMAINDER OF THE AREA...

Please see the Special Features section for more information 
about Tropical Depression Fifteen-E.

Post-Tropical Cyclone Norbert is near 20.5N 143.1W at 1500 UTC,
and is moving west at 11 kt. Maximum sustained winds are 30 kt
with gusts to 40 kt, and the minimum central pressure is 1007
mb. Scattered showers and thunderstorms, along with fresh to 
strong E winds and 8-10 ft seas are active northeast of the 
center, reaching from 21N to 23N between 138W and 140W. Please 
read the latest CPHC Public Advisory at 
https://www.nhc.noaa.gov/text/HFOTCPCP1.shtml and Forecast/ 
Advisory at https://www.nhc.noaa.gov/text/HFOTCMCP1.shtml for 
more details. 

Elsewhere, N swell to 8 ft is impacting the waters north of 29N 
between 121W and 125W. SW swell from the southern hemisphere is 
cross the equator and reaching as far north as 04N between 100W 
and 120W. Gentle to moderate winds and 4-6 ft combined seas in 
mixed swell are noted elsewhere. 

For the forecast, winds and seas following Norbert will diminish
through late today east of 140W. 

Tropical Depression Fifteen-E will move to 15.8N 125.4W this 
evening, 15.6N 127.2W Wed morning, 15.6N 129.1W Wed evening, 
15.6N 131.2W Thu morning, become a remnant low and move to 15.8N 
133.5W Thu evening, and 16.2N 136.0W Fri morning. Fifteen-E will 
dissipate early Sat.

The southerly swell to 8 ft south of 04N will subside through
late today, as will the northerly swell north of 29N between 120W
and 125W.

$$
AL
  

en Español

000
ACPN50 PHFO 151107
TWOCP 

Tropical Weather Outlook
NWS Central Pacific Hurricane Center Honolulu HI
Issued by NWS National Hurricane Center Miami FL
200 AM HST Tue Sep 15 2026

For the central North Pacific...between 140W and 180W:

Active Systems:
The National Hurricane Center is issuing advisories on Tropical
Depression Norbert, located well east of the Hawaiian Islands, and
on Tropical Depression Fifteen-E, located well west-southwest of the
southern tip of the Baja California Peninsula.

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

$$
Forecaster Cangialosi
NNNN