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Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1100 PM PDT Wed Jul 30 2025

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

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

1. Well Southeast of the Hawaiian Islands (CP92):
Disorganized showers and thunderstorms associated with a broad area 
of low pressure located about 800 miles southeast of Hilo, Hawaii, 
continue to persist. Although the system lacks a well-defined 
low-level center at this time, some additional development is 
possible, and a short-lived tropical depression could still form 
during the next day or so. After that time, environmental conditions 
are expected to become less conducive for further development.
* Formation chance through 48 hours...medium...40 percent.
* Formation chance through 7 days...medium...40 percent.

2. South-Southwest of the Baja California Peninsula (EP99):
Showers and thunderstorms associated with a low pressure system 
located several hundred miles south-southwest of the southern tip of 
the Baja California Peninsula continue to become better organized. 
Environmental conditions appear conducive for further development, 
and if current trends persist, a tropical depression or tropical 
storm is expected to form on Thursday. The system is forecast to 
move west-northwestward at around 15 mph over the open waters of the 
eastern Pacific.
* Formation chance through 48 hours...high...near 100 percent. 
* Formation chance through 7 days...high...near 100 percent.

3. Central East Pacific:
An area of low pressure is expected to form well south of 
southwestern Mexico in the next couple of days. Environmental 
conditions appear conducive for some gradual development of this 
system, and a tropical depression could form 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...high...70 percent.



Forecaster Gibbs/Hagen