000
AXPZ20 KNHC 270230
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Tue Apr 27 2021

Tropical Weather Discussion for the eastern Pacific Ocean from
the Equator to 32N, east of 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
0230 UTC.

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

The monsoon trough extends from 08.5N78W to 07N92W to 11N114W to
07N123W. The ITCZ extends from 07N123W to 05N140W. Scattered
moderate isolated strong convection was noted from 03N to 06N
between 80W and 93W, from 03N to 10N between 100W and 108W, and
from 05N to 11N between 108W and 120W. Scattered moderate
convection was noted from 05N to 07N between 125W and 140W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Gentle to moderate winds prevail west of the Baja California 
peninsula. Light to gentle winds prevail elsewhere. Seas are in 
the 3-5 ft range in a mix of northwest and south swell over the 
open waters off Mexico, and 1-3 ft over the Gulf of California. 

For the forecast, fresh to strong southwest to west gap winds 
winds over the northern Gulf of California ahead of a trough 
moving through the region will increase to strong to near gale 
force by late tonight, then diminish early Tue. Fresh to strong 
northwest winds are expected over small areas of the central Gulf
of California Tue night, but should be brief in duration. High 
pressure will build west of the region in the wake of the trough,
supporting fresh winds off Baja California by mid-week. Farther 
south, slight to moderate seas will build by mid- week as a new 
set of southerly swell arrives.

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

Moderate to fresh gap winds prevail over the Gulf of Papagayo
and moderate north winds across the Gulf of Panama. Light to 
gentle winds persist elsewhere. Seas are in the 4-6 ft range in
lingering southerly swell.

For the forecast, gentle to moderate winds will persist across 
the region, with subsiding southerly swell. Fresh to strong gap 
winds will pulse  overnight across the Gulf of Papagayo tonight 
into Tue morning. Additional southerly swell will move into the 
region by mid week.

REMAINDER OF THE AREA...

A cold front extends across northern Baja California to near 
25N124W, then a dissipating frontal trough extends from 25N124W 
to 22N138W. This front will weaken through Tue as moves across 
the rest of waters north of 25N. The subtropical ridge over the 
northern waters has weakened and loosened the pressure gradient 
between the ridge and lower pressure in the vicinity of the ITCZ.
The pressure gradient will support mostly moderate trades 
through mid-week. Seas to near 7 ft over the far western part of 
the area from 04N to 12N west of 137W will subside slightly Tue. 
Elsewhere, modest winds and seas will change little. Looking 
ahead, trade winds may increase later in the week over the 
tropical waters west of about 123W as the subtropical ridge 
builds to the north.

$$
AL