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Tropical Atlantic & Pacific Basin Outlooks & Discussions
Tropical Weather Outlook
Atlantic - Caribbean - Gulf of Mexico
en Español
000
ABNT20 KNHC 190503
TWOAT
Tropical Weather Outlook
NWS National Hurricane Center Miami FL
200 AM EDT Fri Jun 19 2026
For the North Atlantic...Caribbean Sea and the Gulf of America:
Offshore the East Coast of the United States (Remnants of Arthur):
Showers and thunderstorms associated with a trough of low pressure
(the remnants of Arthur) are located over the southeastern United
States. The system is expected to emerge offshore the east coast of
the United States by this afternoon. Environmental conditions then
appear to be marginally conducive for some subtropical or tropical
development tonight or Saturday as the system moves northeastward
at around 20 mph across the Western Atlantic Ocean.
Regardless of development, heavy rainfall with the potential for
widespread and life-threatening flash flooding is likely across
portions of the Southeast United States during the next day or two.
Additional information on the rainfall potential can be found in
rainfall forecasts and Excessive Rainfall Outlooks from the Weather
Prediction Center online at www.wpc.ncep.noaa.gov. More information
on this system, including Gale Warnings, is available in High Seas
Forecasts issued by the National Weather Service under AWIPS header
NFDHSFAT1, WMO header FZNT01 KWBC, and online at
ocean.weather.gov/shtml/NFDHSFAT1.php
Formation chance through 48 hours...low...10 percent.
Formation chance through 7 days...low...10 percent.
$$
Forecaster Beven
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Tropical Weather Discussion
Atlantic - Caribbean - Gulf of Mexico
000
AXNT20 KNHC 190508
TWDAT
Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0615 UTC Fri Jun 19 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 0000 UTC surface analysis and satellite imagery through
0500 UTC.
...TROPICAL WAVES...
An eastern Atlantic tropical wave has its axis near 26.5W, south
of 17N, moving westward at around 10-15 kt. Any nearby convection
is discussed in the ITCZ/MONSOON TROUGH section below.
Another Atlantic tropical wave has its axis near 47W, south of
17N, moving westward at around 10 kt. Any nearby convection is
discussed in the ITCZ/MONSOON TROUGH section below.
An eastern Caribbean tropical wave has its axis near 65W, south
of 19N near the Anegada Passage to central Venezuela, moving
westward at around 10-15 kt. Scattered moderate convection is seen
S of 14N between 62W and 68W.
The western Caribbean tropical wave that was mentioned in the
previous discussion is crossing Central America and moving into
the Eastern Pacific. Please refer to the Eastern Pacific Tropical
Weather Discussion for information on this wave.
...MONSOON TROUGH/ITCZ...
The monsoon trough enters the Atlantic off the coast of Africa
near 18N16W and extends SW to near 06N28W. The ITCZ extends from
06N28W to 06.5N46W where it becomes ill-defined due to a tropical
wave to the west. Numerous moderate to strong convection is seen
from 03N to 11N and E of 20W. Scattered moderate convection is
occurring from 02N to 10N between 25W and 45W.
...GULF OF AMERICA...
A ridge extends from subtropical high centered in the Atlantic to
across Florida and the Gulf along 26N, with a surface trough
emerging off the western Yucatan Peninsula. The pressure gradient
between these features is supporting fresh to strong winds across
much of the Gulf. Seas are in the 4-7 ft over much of the Gulf,
reaching 8 ft off the coast of Louisiana to the western Florida
Panhandle.
For the forecast, the western periphery of Atlantic high pressure
extends westward across Florida and to the central Gulf. The
pressure gradient between the high pressure and relatively lower
pressures over Texas and northeastern Mexico will generally
support mostly fresh southerly winds over the western and central
Gulf, and gentle to moderate anticyclonic winds over the eastern
Gulf through Fri. Winds over the western and central Gulf will
change little through early Mon, then diminish to gentle to
moderate speeds afterward. Winds over the eastern Gulf become
light to gentle in speeds beginning Fri night as weak high
pressure settles over the eastern Gulf.
...CARIBBEAN SEA...
Please refer to the Tropical Waves section for details on
convection associated with a wave in the eastern Caribbean.
The broad subtropical ridge over the western Atlantic extends
westward along 27N-28N and across central Florida. The pressure
gradient between the ridge and the Colombian low is supporting
fresh to strong winds over the south-central Caribbean and the
Gulf of Honduras, where seas are in the 6-8 ft range. Moderate to
fresh trades and 4-7 ft seas prevail in the eastern and NW
Caribbean. Gentle to moderate winds and seas of 3-6 ft are across
the remainder of the Caribbean. Scattered showers and isolated
thunderstorms are ongoing in the central Caribbean to the north of
the Colombia low.
For the forecast, high pressure over the Atlantic will change
little into next week. The pressure gradient between the high
pressure and relatively lower pressure to its south will maintain
fresh to strong trade winds and moderate to rough seas in the
central Caribbean through the forecast period, with highest winds
and seas expected off the coast of Colombia. Pulsing winds at
fresh to strong speeds and moderate to rough seas are expected in
the Gulf of Honduras nightly through Mon, pulsing briefly to near
gale- force tonight and Fri night. Moderate to fresh east to
southeast winds are expected elsewhere from 12N to 18N west of 80W
through Mon night.
...ATLANTIC OCEAN...
A frontal remnant trough extends from 31N30W to 26N44W. No
significant convection is seen near the trough. The rest of the
discussion waters N of 20N is dominated by high pressure anchored
by a 1024 mb subtropical high centered near 27N59W. Moderate to
fresh trades and moderate seas prevail across much of the Atlantic
S of 20N as well as between the Bahamas and Cuba, with gentle to
moderate or weaker E winds and 3-6 ft seas to the N of 20N.
For the forecast west of 55W, high pressure across the basin will
begin to shift slightly eastward Fri night as a cold front moves
across the southeastern U.S. The front will move offshore
northeast Florida during the weekend, then stall and weaken. Fresh
to strong southwest winds are expected north of 30N and east to
near 72W through Fri night. Moderate to fresh nightly pulsing
fresh to strong winds south of 22N will continue into early next
week.
$$
Adams
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Tropical Weather Outlook
Eastern Pacific
en Español
000
ABPZ20 KNHC 190502
TWOEP
Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1100 PM PDT Thu Jun 18 2026
For the eastern and central North Pacific east of 180 longitude:
Tropical cyclone formation is not expected during the next 7 days.
$$
Forecaster Beven
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Tropical Weather Discussion
Eastern Pacific
000
AXPZ20 KNHC 190310
TWDEP
Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Fri Jun 19 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 0000 UTC surface analysis and satellite imagery through
0305 UTC.
...TROPICAL WAVES...
A tropical wave is along 86W, south of 19N, moving at around 10
kt. Scattered moderate to isolated strong convection is noted
north of 07N and between 84W and 89W.
A tropical wave is along 95W, south of 16N, moving very slowly
westward at around 5 kt. A few showers are noted near the trough
axis.
A tropical wave is along 114W, south of 18N, moving very slowly
westward around 5 kt. Isolated to scattered showers are
occurring from 04N to 17N and between 106W and 118W.
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
The monsoon trough extends from the coast of Costa Rica near
11N86W to 15N103W and to 08N123W. The ITCZ stretches from 07N123W
to beyond 06N140W. Scattered moderate to isolated strong
convection is present from 02N to 08N and between 90W and 95W.
Similar convection is seen from 05N to 13N and west of 121W.
...OFFSHORE WATERS WITHIN 250 NM OF MEXICO...
High pressure dominates the offshore waters of Mexico. The
moderate pressure gradient between the strong ridge in the NE
Pacific and lower pressures in NW Mexico result in moderate to
locally fresh northerly winds in the offshore waters of Baja
California. Seas in these waters are 4-6 ft. In the remainder of
the Mexican offshore waters, including the Gulf of Tehuantepec,
moderate or lighter winds and slight to moderate seas prevail.
For the forecast, gentle to moderate northerly winds will
continue over the offshore waters of Baja California, except
pulsing to locally fresh speeds at night through through the
weekend. Gentle to occasionally moderate winds are expected
inside the Gulf of California and near the tip of Baja California
Sur through the weekend and into early next week. Looking ahead,
gap winds in the Gulf of Tehuantepec may pulse to fresh to
strong starting late Tue night.
....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA,
AND WITHIN 750 NM OF ECUADOR...
High pressure north of the Caribbean Sea forces moderate easterly
trade winds and moderate seas across the Gulf of Papagayo.
Moderate to occasionally fresh southerly winds and moderate seas
are present south of the Equator. Elsewhere, light to gentle
winds and slight seas prevail.
For the forecast, moderate to occasionally fresh southerly winds
and moderate to locally rough seas will prevail across the
offshore waters between Ecuador and the Galapagos Islands through
early next week. Moderate winds will pulse to fresh speeds in
diurnal offshore flow in the immediate Gulf of Papagayo through
at least Tue night. Light to gentle winds and slight to moderate
seas in southwest swell are forecast elsewhere through the next
several days.
...REMAINDER OF THE AREA...
High pressure centered well north of the area dominates the
remainder of the tropical eastern Pacific. MOderate NE-E winds
and moderate seas are found north of the ITCZ to 20N and west of
120W. Moderate to locally fresh SE winds and seas of 6-8 ft are
noted south of 05N and east of 120W. Elsewhere, light to gentle
winds and moderate seas are prevalent.
For the forecast, the old southerly swell across the south-
central waters will gradually decay through the end of the week,
then, seas will build to rough again south of and near the
Equator and east of 120W beginning Sat as a new set of southerly
swell begins to move through this part of the area. Winds may
pulse to fresh speeds in the west-central waters at times.
Otherwise, little overall changes are expected in and winds and
seas through the upcoming weekend and into early next week.
$$
Delgado
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Tropical Weather Discussion
Central Pacific
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en Español
000
ACPN50 PHFO 190502
TWOCP
Tropical Weather Outlook
NWS Central Pacific Hurricane Center Honolulu HI
Issued by NWS National Hurricane Center Miami FL
800 PM HST Thu Jun 18 2026
For the central North Pacific...between 140W and 180W:
Tropical cyclone formation is not expected during the next 7 days.
$$
Forecaster Beven
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