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Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1100 AM 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-southeast 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 have increased in association with a 
well-defined area of low pressure located about 1400 miles 
east-southeast of the Hawaiian Islands. If the thunderstorms 
persist or increase, this system will likely become a tropical 
depression or tropical storm while it moves westward into the 
Central Pacific basin.
* Formation chance through 48 hours...high...70 percent.
* Formation chance through 7 days...high...70 percent.

2. South of Southwestern Mexico (EP99):
A large area of disorganized showers and thunderstorms located about 
500 miles south of the southwestern coast of Mexico is associated 
with a trough of low pressure. Environmental conditions appear 
conducive for development, and a tropical depression is likely to 
form during the next couple of days 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 or over the weekend.
Environmental conditions appear conducive for some gradual 
development of this system as it moves west-northwestward at 10 to 
15 mph.
* Formation chance through 48 hours...low...near 0 percent. 
* Formation chance through 7 days...low...30 percent.



Forecaster Cangialosi/Bucci