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Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 PM PDT Mon Sep 15 2025

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

Active Systems:
The National Hurricane Center is issuing advisories on Tropical 
Storm Mario, located a few hundred miles west-southwest of the 
southern tip of the Baja California Peninsula.

1. Off the Coast of Southwestern Mexico:
An elongated trough of low pressure located several hundred miles 
off the coast of southern Mexico is producing disorganized showers 
and thunderstorms.  Environmental conditions appear conducive for 
gradual development of this system, and a tropical depression is 
likely to form during the middle to latter part of this week as it 
moves west-northwestward at 10 to 15 mph over the central east 
Pacific.
*Formation chance through 48 hours...medium...40 percent.
*Formation chance through 7 days...high...70 percent.



Forecaster Hagen