000
AXPZ20 KNHC 210935
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Mon Apr 21 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 0600 UTC surface analysis and satellite imagery through
0930 UTC.

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

The monsoon trough extends from 08N78W to 08N83W to 05N90W to
07N100W. The ITCZ stretches from 07N100W to 03N130W and to 
02N140W. A second ITCZ extends from 01S122W to 05S140W. 
Scattered moderate to isolated strong convection is observed from
03N to 10N and east of 87W. Scattered moderate convection is 
present from 02N to 08N between 87W and 104W, and from 02S to 
07S between 130W and 140W.

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

A 1039 mb high near 43N145W continues to extend a ridge SE 
across the Baja California Peninsula and the Revillagigedo 
Islands. Weak high pressure is over the SW CONUS, and there is a 
generally weak pressure across the region, which is supporting 
the continuation of gentle to moderate NW winds across the Baja 
Peninsula and SW Mexiacan offshore waters as well as the entrance
of the Gulf of California. Seas in these waters are 4-6 ft in NW
swell. Gentle winds are ongoing in both the Gulf of Tehuantepec 
and California with mostly slight seas.

For the forecast, a prevailing ridge across the region will 
maintain gentle to moderate NNW winds and slight to moderate seas
over the Baja California and SW Mexican offshore waters through 
Fri, except for locally fresh NW winds pulsing near Jalisco 
tonight. Moderate to fresh N winds will pulse in Tehuantepec 
tonight into Tue. Otherwise, moderate SW winds are forecast at 
night in the northern Gulf of California today through Thu as a 
surface trough developing inland Baja California Norte shift 
eastwards over the Gulf waters. Looking ahead, NW winds along the
Baja California offshore waters are forecast to freshen Fri 
night.

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

Scattered heavy showers and tstms continue to affect the offshore
waters of Panama, Costa Rica and northern Colombia. Gusty winds 
and rough seas are likely in the offshores between Panama and
Colombia due to this convective activity. Elsewhere, a 1024 mb 
high pressure system located west of Bermuda continue to force 
fresh to locally strong NE to E winds in the Gulf of Papagayo 
region, reaching downstream to 89W. Seas in these waters are 4-6 
ft. Light to gentle winds are ongoing elsewhere along with 4-5 
ft seas, except to 6 ft near the Galapagos Islands.

For the forecast, fresh to strong E winds and locally rough seas
are expected to pulse in the Gulf of Papagayo through Tue 
morning. Afterward, moderate to fresh winds will pulse through 
Fri. Moderate winds from this gap event will extend to the 
offshore waters of El Salvador and Guatemala today through Thu. 
Gentle to locally moderate southerly winds are forecast between 
Ecuador and the Galapagos Islands through Fri night. Looking 
ahead, southerly swell will reach the southern Galapagos Islands 
Fri night with seas to 8 ft.

...REMAINDER OF THE AREA....

A 1039 mb high near 43N145W continues to extend a ridge across
the Pacific subtropical waters. The pressure gradient between the
ridge and the ITCZ continue to support moderate to fresh NE to E
winds in the tropical waters W of 119W where 7-9 ft are present.
Moderate or weaker winds and moderate seas prevail elsewhere. 

For the forecast, moderate to fresh winds will continue across
the tropical Pacific waters W of 120W through the forecast 
period, as surface ridging will continue to extend across the 
eastern Pacific subtropical waters. Seas will be moderate to
rough over these waters. North of 20N, gentle to locally 
moderate NE to E winds and moderate seas will prevail, increasing
to moderate to fresh speeds over the western waters late Fri 
into Fri evening. Looking ahead, southerly swell will support 
rough seas to 8 ft south of 03N beginning late Fri.

$$
Ramos