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Eastern North Pacific Tropical Weather Discussion


054 
AXPZ20 KNHC 090842
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Tue Jun 9 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 0600 UTC surface analysis and satellite imagery through
0700 UTC.

...SPECIAL FEATURES...

Tropical Storm Boris is centered near 16.4N 98.4W at 09/0900
UTC, moving north-northwest at 5 kt. Estimated minimum central
pressure is 1003 mb. Maximum sustained wind speed is 35 kt with
gusts to 45 kt. Peak seas are currently around 13 ft or 4.0 m.
Limited convection is noted over water with scattered moderate
noted in the SW semicircle along the coast and just offshore,
while much more intense convection is to the ENE over land,
numerous moderate to strong between 91W and 96W over southern
Mexico. Scattered moderate convection is noted elsewhere from 13N
to 19N between 91W and 98W. Boris is moving toward the north-
northwest. A turn toward the northwest and an increase in 
forward speed is expected early this morning. On the forecast 
track, the center of Boris will move farther inland over eastern 
Guerrero this morning. Rapid weakening is expected, and Boris is
forecast to dissipate this afternoon. Heavy rainfall associated
with Tropical Storm Boris will impact portions of southern 
Mexico. This rainfall will likely produce life-threatening 
flooding and mudslides, especially in areas of steep terrain.
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 
Boris NHC Forecast/Advisory and Public Advisory at 
www.hurricanes.gov for more details.

Tropical Storm Cristina is centered near 12.7N 87.6W at 09/0900 
UTC, moving north-northeast at 3 kt. Estimated minimum central 
pressure is 1006 mb. Maximum sustained wind speed is 35 kt with 
gusts to 45 kt. Peak seas are currently around 17 ft or 5.0 m. 
Scattered to numerous moderate and isolated strong convection is 
noted within 180 nm in the S semicircle of Cristina. Scattered 
moderate convection is noted elsewhere from 05N TO 13N between 
81W and 98W. Cristina is moving toward the north-northeast. The 
storm is forecast to meander near the coast today before turning 
toward the northwest and west-northwest through midweek. On the 
forecast track, Cristina should move near or along the coast of 
Nicaragua, Honduras, and El Salvador during the next couple of 
days. Little change in strength is forecast today, followed by 
some weakening through midweek. Heavy rainfall associated with
Tropical Storm Cristina will impact coastal portions of Central 
America through Thursday. This rainfall may produce life-
threatening flooding and mudslides, especially in areas of steep 
terrain. 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 
Cristina NHC Forecast/Advisory and Public Advisory at 
www.hurricanes.gov for more details.

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

A monsoon trough extends from the coast of NW Colombia in the SW
Caribbean Sea to just N of Panama to along the border of Costa
Rica and Nicaragua with Tropical Storm Cristina just to the NW,
then resumes well SSW of Tropical Storm Boris from 12N98W to
07N117W. The ITCZ extends from 07N117W to 09N135W, then resumes W
of 140W to the SW of the Remnant Low of Amanda. Other than the
convection described above and associated with Boris and
Cristina, scattered moderate isolated strong is noted within 330
nm SSE of the monsoon trough between 98W and 106W.

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

Please see the Special Features section for details on Tropical 
Storm Boris near the coast of southern/SW Mexico.

Otherwise, a broad ridge extends from a 1028 mb high well NE of 
the Hawaiian Islands near 33N146W southeastward to near the 
Revillagigedo Islands. Broad low pressure extends from southern 
California SSE across the eastern coast of Baja California Norte.
This pattern is supporting moderate to locally fresh NW-N winds
offshore Baja California Norte, and gentle to moderate offshore
Baja California Sur. Winds across the waters of Baja Sur turn 
westerly around the coast at Cabo San Lucas resulting in fresh
westerly winds wrapping around the southern tip of Baja 
California, while a few areas of moderate to fresh W gap winds 
prevail inside the southern Gulf of California, mainly from 24N
to 25.5N. Moderate S to SW winds are in the northern Gulf of 
California N of 30N and W of 113.5W. Gentle to moderate NW winds
are found elsewhere 16N to 23N between 106W and 116W, including
the Revillagigedo Islands, then become moderate to fresh from 
Cabo Corrientes to the area surrounding Boris. Seas are 8-14 ft
offshore southern and SW Mexico mainly in large, long period
cross-equatorial S-SW swell. Seas are 7-9 ft offshore Baja
California in mixed NW and the southerly swell. In the Gulf of 
California, seas 1-3 ft, except 4-7 ft in the southern Gulf with
southerly swell moving through the entrance. 

For the forecast, Tropical Storm Boris will move inland and 
weaken to a tropical depression near 17.1N 99.1W this afternoon, 
and dissipate Wed morning. Elsewhere, a broad surface ridge will
sustain gentle to moderate NW winds across the Baja Norte waters
through Wed, and across the Baja Sur to Revillagigedo Islands 
through early Wed before weakening, except moderate to fresh NW-N 
winds and moderate to rough seas across the far outer waters of 
Baja Norte today. Large, cross equatorial S-SW swell will 
continue to impact southern and southwestern Mexico waters 
through tonight, and the Baja California waters through Wed, and
will generate very large and powerful coast along the local 
coasts and offshore reefs. This swell will also merge with 
shorter period NW swell across the Baja waters. Marine conditions
should significantly improve by the end of the week and into the
upcoming weekend, with tranquil conditions across the offshore 
waters of Mexico.

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

Please see the Special Features section for details on Tropical 
Storm Cristina, just offshore of the Gulf of Fonseca, including
associated deep convection and heavy rainfall potential.

Fresh to strong SW to W winds dominate the waters around Cristina
from 09N to 13.5N between 86W and 91W, including the Gulf of
Papagayo, with nearshore winds off western El Salvador and
Guatemala of gentle to moderate, and then moderate to fresh there
farther offshore. Winds are gentle to moderate across the 
remainder of the waters including southern Costa Rica, Panama, 
Colombia, and Ecuador. Large, long period cross-equatorial 
southerly swell continues to impact the offshore waters of 
Central America and northern South America with seas of 7-11 ft, 
except higher N of 09N.

For the forecast, Tropical Storm Cristina will move to 12.9N 
87.7W this afternoon, weaken to a tropical depression near 13.2N 
88.2W Wed morning, inland to 13.5N 88.8W Wed afternoon, inland to
14.0N 89.5W Thu morning, and dissipate Thu afternoon. Otherwise,
large, cross-equatorial S-SW swell with seas of 8-15 ft will 
continue to impact the area waters through tonight into early
Wed, resulting in large and powerful surf along the coasts. 
Refer to your local meteorological information for more details 
on the surf zone and beach impacts. Moderate seas will prevail
across the offshore waters for the end of the week. Mainly 
moderate or weaker winds will prevail away from Cristina through 
the remainder of the week and into the upcoming weekend.

...REMAINDER OF THE AREA...

The 1008 mb Remnant Low of Amanda is analyzed near 10.5N139W. 
Isolated moderate convection is noted between 45 nm and 90 nm in
the NE semicircle, with similar convection between 90 nm and 240
nm in the SW semicircle, including W of 140W. Fresh to strong 
winds are found within 240 nm in the NW semicircle, while seas 
of 7-10 ft are found from 09.5N to 15N between 135W to beyond 
140W. Otherwise, a broad ridge extends from a 1028 mb high well 
NE of the Hawaiian Islands near 33N146W southeastward to near the
Revillagigedo Islands. Moderate to fresh N to NE winds are found
elsewhere S of the ridge to 12N and W of 120W. Seas are 6-9 ft 
elsewhere N of 10N and W of 120W as well as across the waters E 
of 120W, higher N of 08N and E of 104W closer to Tropical Storm 
Boris and Tropical Storm Cristina. Seas are 6-7 ft S of 09.5N 
and W of 120W.

For the forecast, the Remnant Low of Amanda will continue to 
spin down and weaken early in the week, moving W of 140W later
today. Moderate to locally fresh trades will continue to 
dominate the waters N of 10N and W of 120W under ridging through
tonight or so, then will weaken as the gradient weakens by the 
middle through the end of the week. Winds will be moderate or 
weaker elsewhere through tonight into early Wed, except higher 
near the offshore waters of southern Mexico and northern Central 
America near Boris and Cristina. Meanwhile, northerly swell in 
the N-central waters will produce seas of 7-10 ft for the next 
several days. Large cross-equatorial southerly swell will 
continue northward through the regional waters through tonight
into early Wed, while merging with the northerly swell. Moderate
seas will dominate the open waters by the end of the week into
the upcoming weekend.
 
$$
Lewitsky