Tropical Depressions, Tropical Storms, and Hurricanes all have different characteristics that are compared and contrasted in this video

Tropical Depression Four-E formed on Friday morning in the Eastern Pacific after the National Hurricane Center designated the area Potential Tropical Cyclone Four-E on Thursday.

A tropical depression is a tropical cyclone that has maximum sustained winds below 39 mph. Once a tropical depression forms, the National Hurricane Center gives it a number based on its order of formation in the hurricane season. This is the fourth tropical depression in the Eastern Pacific this season. The E in the name designates its location. 

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Tropical Depression Four-E is currently several hundred miles south of Southern Mexico.

Tropical Depression Four-E in the Eastern Pacific Ocean.
(FOX Weather)

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According to the NHC, regardless of any further development, Tropical Depression Four-E will produce increasing winds and high seas 

Tropical Storm Watches have been issued for the southwestern coast of Mexico from Manzanillo to just west of Acapulco. 

Rainfall totals ranging from 2-4 inches, with localized amounts of up to 6 inches, are possible across portions of Mexican states such as Guerrero, Michoacan and Colima through this weekend.

The system is also expected to generate life-threatening surf and rip current conditions for those same areas.

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Tropical Depression Four-E is expected to continue to strengthen and become Tropical Storm Dalila later Friday.

The 2025 Pacific hurricane season has been off to a busy start, with its first hurricane having already developed with Barbara. The cyclone briefly reached Category 1 strength before dissipating over colder waters.