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Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1100 PM PDT Tue Jul 29 2025

For the eastern and central North Pacific east of 180 longitude:

Active Systems: 
The National Hurricane Center is issuing advisories on Hurricane 
Iona, located in the central Pacific basin well south of the 
Hawaiian Islands, and on Tropical Storm Keli also located in the 
central Pacific basin well southeast of the Hawaiian Islands.

1. Western East Pacific (EP98):
Showers and thunderstorms associated with an area of low pressure 
located around 1150 miles east-southeast of the Hawaiian Islands 
remain limited and have changed little since this morning.  However, 
if persistent showers and thunderstorms re-develop during the next 
day or so, a short-lived tropical depression could still form.  The 
system will enter the Central Pacific basin shortly.
* Formation chance through 48 hours...medium...60 percent.
* Formation chance through 7 days...medium...60 percent.

2. South of Southwestern Mexico (EP99):
A trough of low pressure located several hundred miles southwest of 
the southwestern coast of Mexico is producing a large area of 
disorganized showers and thunderstorms.  Environmental conditions 
appear conducive for development, and a tropical depression is 
likely to form during the next day or two while the system moves 
west-northwestward around 15 mph, remaining well offshore of the 
southwestern coast of Mexico. 
* Formation chance through 48 hours...high...80 percent. 
* Formation chance through 7 days...high...90 percent.

3. Central East Pacific:
An area of low pressure is forecast to develop well south of 
southern or southwestern Mexico late this week.  Environmental 
conditions appear conducive for some gradual development of this 
system and a tropical depression could develop over the weekend or 
early next week as the system moves west-northwestward at 10 to 15 
mph.
* Formation chance through 48 hours...low...near 0 percent. 
* Formation chance through 7 days...medium...60 percent.



Forecaster Jelsema