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AXPZ20 KNHC 090927

TWDEP 



Tropical Weather Discussion

NWS National Hurricane Center Miami FL

1005 UTC Fri May 9 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

0900 UTC.



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



The monsoon trough axis extends from the coast of Costa Rica at 

09N84W to 08N110W. The ITCZ extends from 08N110W to 08N130W. 

Scattered moderate convection is active from 06N to 08N between

93W and 98W.



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



A ridge of high pressure extends from a 1026 mb high at 38N130W 

southeastward off Baja California to the Revillagigedo Islands.

A recent scatterometer satellite pass indicated fresh to moderate

NW winds off Baja California Norte, gentle to moderate NW winds 

across Mexican offshore waters elsewhere north of 20N, and light

breezes farther south. Combined seas are generally 4 to 6 ft 

except for 1 to 3 ft in the Gulf of California. 



For the forecast, A late season N gap wind event should begin late

tonight over the Gulf of Tehuantepec. Winds are expected to 

reach gale force beginning Sat and possibly last through Mon 

morning. Elsewhere, weak ridging over the waters west of the Baja

California peninsula will promote gentle to moderate winds over 

forecast waters from Puerto Angel westward through the weekend. 

Looking ahead, on Mon and Tue stronger offshore ridging should 

enhance the NW winds west of the Baja California peninsula to 

fresh conditions.



...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, 

AND WITHIN 750 NM OF ECUADOR...



Winds are light to gentle across the forecast waters. Seas are 

6-7 ft in S swell over the equatorial zones, and 5-6 ft in SW 

swell over the Central American zones.



For the forecast, light to gentle winds across the forecast 

waters will persist into the weekend. Looking ahead, E gap winds 

over the Gulf of Papagayo region will increase to fresh to strong

speeds starting Sun night into early next week. 



...REMAINDER OF THE AREA....



A ridge of high pressure extends from a 1026 mb high at 38N130W 

southeastward to the Revillagigedo Islands. The weak pressure 

gradient between the ridge and lower pressure over the monsoon 

trough/ITCZ is forcing only moderate to fresh NE trades with seas

7-9 ft in mixed wind waves and N swell from 09N-15N west of 

110W. Elsewhere, winds are gentle to moderate and seas are 5-7 ft

in mixed swell.



For the forecast, a slightly stronger ridge will produce a 

larger area of fresh NE winds and seas 8-9 ft between 07N-20N 

west of 125W on Sat and Sun. By early next week, a further

increase in the strength of the ridge may cause the NE trades to

be fresh to strong over an expanded area north of 10N and west 

of 115W. 





$$

Christensen