363 
AXPZ20 KNHC 190350
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Sat Apr 19 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 0000 UTC surface analysis and satellite imagery through
0300 UTC.

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

A surface trough extends from a 1007 mb low in northwestern 
Colombia near 08N75W to 08N78W to 09N84W to 05N97W. The ITCZ 
continues from 05N97W to beyond 04N140W. A second ITCZ extends 
from 01S117W to 06S140W. Widely scattered moderate convection is 
occurring from 03N to 12N between 90W and 120W. 

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

A strong 1043 mb high centered well north of the area near 
43N152W extends ridging through the Mexico offshore waters, while
a trough has been analyzed over the Gulf of California through 
southern Baja California. Localized fresh W winds and seas to 4 
ft are noted in the northern Gulf as low pressure prevails over 
the southwestern United States. Widespread gentle to moderate NW 
winds and moderate seas prevail over the waters offshore of Baja 
and southern Mexico, as well as through the Gulf of California. 

For the forecast, localized fresh to strong W winds will pulse 
in the northern Gulf of California overnight. Elsewhere, pulsing 
fresh to strong NW winds are expected offshore of southwestern 
Mexico near Jalisco through Guerrero into early next week, while 
occasional fresh NW winds will occur through the Sebastian 
Vizcaino Bay and Magdalena Bay this weekend. Otherwise, gentle to
moderate NW winds and slight to moderate seas will prevail over 
the remainder of the waters through the middle of next week. 

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

Strong to locally near-gale force winds are pulsing in the Gulf 
of Papagayo as a strong pressure gradient prevails between low 
pressure over northwestern Colombia and high pressure in the 
western Atlantic. Recent buoy data show seas of 6 to 8 ft in 
this region. In the Gulf of Panama, recent scatterometer 
satellite data shows fresh N winds as far south as 05N. Scattered
moderate to strong convection is pushing offshore of western 
Colombia and southeastern Panama, and strong winds and locally 
rough seas are likely near convection. The rest of the regional 
waters are experiencing moderate or weaker winds and moderate 
seas in S to SW swell. 

For the forecast, strong to near-gale force E winds will pulse 
in the Gulf of Papagayo through Sat morning, and locally rough 
seas will accompany these winds. Fresh to strong E winds are then
expected each night and morning in this region through the 
middle of next week. Moderate to fresh winds are likely to 
extend through the waters well offshore of El Salvador and 
Guatemala this weekend. Elsewhere, fresh to strong N winds will 
occur overnight in the Gulf of Panama, with winds occasionally 
pulsing to moderate speeds thereafter. Looking ahead, a new long-
period S to SW swell will propagate through the regional waters 
early next week.

...REMAINDER OF THE AREA....

A strong 1043 mb high centered well north of the area near 
43N152W extends ridging through much of the eastern Pacific 
waters. Moderate N to NE winds and seas of 5 to 8 ft are noted 
over the waters north of the ITCZ, and pulsing fresh NE winds 
are noted between 08N and 20N west of 115W. South of the ITCZ, 
recent altimeter satellite data show seas to 8 ft south of the 
equator between 115W and 120W, and moderate winds are observed in
this region. 

For the forecast, moderate N to E winds will occur north of the 
ITCZ through the middle of next week as ridging prevails over the
eastern Pacific waters. Pulsing fresh NE winds are expected 
through Sun between 05N and 20N, west of 115W. A short-period, 
wind-generated E swell will promote rough seas in this region 
through early next week. Farther south, rough seas in S swell 
south of the equator will subside through Sat morning. Looking 
ahead, new N swell may lead to rough seas in the northern 
waters, north of 25N, by early next week. 

$$
ADAMS