Skip Navigation Links
NOAA NOAA United States Department of Commerce

Eastern North Pacific Tropical Weather Discussion


985 
AXPZ20 KNHC 230709
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Fri May 23 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
0700 UTC.

...TROPICAL WAVES...

The axis of a tropical wave is analyzed along 112W from 04N to 
15N, moving westward around 5-10 kt. Scattered moderate to 
isolated strong convection is noted from 06N to 15N between 106W
and 117W.

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

The monsoon trough enters the eastern Pacific near 10N86W to 
12N105W to 08N118W. The ITCZ continues from 08N118W to beyond 
08N140W. Scattered moderate to isolated strong convection is 
noted from 06N to 11N between 96W and 107W and from 06N to 13N
between 120W to 140W. 

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

Surface ridging extends over the Mexico offshore waters, 
supporting gentle to moderate NW winds over the Baja California 
waters and light to gentle winds offshore southern Mexico.
Locally rough seas prevail over the waters offshore Baja
California Norte, otherwise mainly moderate seas prevail. Elsewhere,
troughing prevails in the Gulf of California, supporting gentle 
to moderate winds and slight seas.

For the forecast, pulsing fresh NW winds will occur each night 
near Cabo San Lucas as troughing resides over Baja California 
Sur. Elsewhere, moderate to fresh NW winds are expected north of 
Punta Eugenia through Sat, with pulsing winds expected offshore 
of much of the peninsula into early next week. In the northern 
Gulf of California, winds will pulse to fresh speeds nightly into
the weekend. Rough seas in NW swell will prevail offshore of 
Baja California Norte into Sat before seas slowly subside into 
the weekend. 

In the extended forecast, an area of low pressure is likely to 
form early next week several hundred miles south of the southern 
coast of Mexico. Conditions appear favorable for development of 
this system, and a tropical depression could form around the 
middle of next week while moving westward to west- northwestward 
at 10 to 15 kt. There is a medium chance of development within 
the next 7 days. 

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

Fresh E winds are noted in the Papagayo region as low pressure 
prevails over northwestern Colombia. Otherwise, mainly light winds
are occurring north of the monsoon trough, with gentle to 
moderate winds occurring to the south. Moderate seas in SW swell 
are noted offshore of Central America and Colombia, and rough 
seas are occurring in the vicinity fo the Galapagos Islands.

For the forecast, fresh to locally strong E winds will pulse in 
the Gulf of Papagayo through the weekend as low pressure prevails
over northwestern Colombia. Moderate to fresh winds may extend 
beyond the Papagayo region, impacting areas well offshore of 
Guatemala and El Salvador. Elsewhere, a long-period SW swell is 
slated to move through the South American waters through this 
weekend, leading to rough seas offshore of Ecuador and Colombia. 

...REMAINDER OF THE AREA....

Surface ridging dominates the east Pacific waters, anchored by a
1034 mb high centered northwest of the area near 38N165W. 
Moderate NE winds and moderate seas prevail north of the monsoon
trough and ITCZ. Fresh NE winds occurring around 10N, west of 
120W, are generating rough seas. Elsewhere, rough seas in N swell
are present north of 24N and east of 135W. Farther south, a 
long-period SW swell is producing rough seas over the equatorial 
waters, with the highest seas noted south of the equator. 
Otherwise, moderate or weaker winds and moderate seas prevail 
elsewhere. 

For the forecast, moderate to fresh N to NE winds will prevail 
north of the monsoon trough and ITCZ through today as high 
pressure prevails to the north. Rough seas generated by trade 
winds surrounding 10N will continue through today before 
subsiding this weekend. Elsewhere, rough seas occurring well 
offshore of Baja California, north of 24N and east of 135W, will 
prevail through tonight. The high pressure to the north is 
slated to weaken this weekend, supporting mainly moderate winds 
north of the monsoon trough/ITCZ. Farther south, rough seas 
generated by a long-period SW swell will occur south of 05N into 
early next week.

$$
Konarik