Tropical Storm Dalila could form in Eastern Pacific by end of week as hurricane season continues fast start

Both Barbara and Cosme became post-tropical areas of low pressure as they moved over colder waters, but the National Hurricane Center is watching two other areas of interest in the Eastern Pacific for tropical development.

The Eastern Pacific hurricane season is running a month ahead of schedule in terms of named tropical cyclones, and odds continue to increase that a fourth named storm could form in the basin by the end of the week.

The average date of the first hurricane in the Eastern Pacific is June 26, but the 2025 season has already seen its first hurricane develop in Barbara, which briefly reached Category 1 strength on Monday. Barbara became a post-tropical area of low pressure Tuesday night as it tracked over cooler waters, which are unable to sustain tropical storms.

WHY ATLANTIC HURRICANE SEASON IS OFF TO SLOW START WHILE EASTERN PACIFIC BUZZES WITH TROPICAL ACTIVITY

This graphic shows areas of tropical activity in the Eastern Pacific Ocean.
(FOX Weather)


 

Cosme also becomes a post-tropical cyclone

Similarly, Cosme, which was spinning more than 500 miles south-southwest of the southern tip of Mexico's Baja California Peninsula, also became a remnant area of low pressure Wednesday morning as it moved over cold and inhospitable waters, according to the National Hurricane Center (NHC).

With Cosme not expected to redevelop, the National Hurricane Center issued its last advisory on Wednesday afternoon. 

This graphic shows the expected track of Cosme.
(FOX Weather)


 

Invest 93E likely to become Tropical Storm Dalila later this week or this weekend 

Meanwhile, the NHC designated a broad area of low pressure several hundred miles south of southern Mexico as Invest 93E on Wednesday morning. An invest is a naming convention used to identify areas the NHC is investigating for possible development into a tropical depression or tropical storm within the next seven days.

Invest 93E has a medium chance of developing into at least a tropical depression in the next two days and a high chance in the next seven days. 

If it attains tropical storm status, it will be named Dalila. It is expected to take a similar track as Barbara, according to the FOX Forecast Center.

WHAT’S THE DIFFERENCE BETWEEN A TROPICAL DEPRESSION, TROPICAL STORM AND HURRICANE?

This graphic shows the development chances for Invest 93E in the Eastern Pacific Ocean.
(FOX Weather)


 

Second area to watch in Eastern Pacific

Early Wednesday morning, the NHC identified a second area to watch for tropical development in the Eastern Pacific due east of Invest 93E, offshore of southern Mexico and Central America.

This area is being given a low chance of development over the next seven days. 

This graphic shows the development chances for a second area to watch in the Eastern Pacific Ocean.
(FOX Weather)


 
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