Tropical depression or Tropical Storm Alvin expected Wednesday as Invest 90E churns off Mexico’s coast
When a tropical depression or Tropical Storm Alvin forms, it will be the first of the 2025 season in either the Eastern Pacific or Atlantic basins.
Eastern Pacific likely to see tropical depression or Tropical Storm Alvin on Wednesday
The official start to the 2025 Eastern Pacific hurricane season began a little less than two weeks ago, and the National Hurricane Center says a tropical depression or Tropical Storm Alvin could form on Wednesday. FOX Weather Meteorologists Bob Van Dillen and Stephen Morgan break down the latest forecast on May 28, 2025.
UPDATE: On Wednesday, the National Hurricane Center designated this system a tropical depression. Follow the latest forecast here.
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The National Hurricane Center (NHC) said that a tropical depression or Tropical Storm Alvin is expected to form on Wednesday as Invest 90E continues to churn off Mexico’s coast.
The NHC designated the area of low pressure as Invest 90E on Monday. An invest is a term used to indicate an area under increased scrutiny by forecasters for the potential of tropical development.
(FOX Weather)
According to the NHC, showers and thunderstorms continue to show signs of organization near the broad area of low pressure several hundred miles south of the southern coast of Mexico, but the system still lacks a well-defined circulation.
"Environmental conditions remain favorable for further development, and a tropical depression or tropical storm is expected to form later today or tonight as the low moves generally west-northwestward at around 10 mph," the NHC said.
When a tropical depression or Tropical Storm Alvin forms, it will be the first of the 2025 season in either the Eastern Pacific or Atlantic basins.
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This comes just under two weeks after the official start of the Eastern Pacific hurricane season.
Hurricane season in the Eastern Pacific began on May 15, while the Atlantic hurricane season officially begins on June 1.
However, as it moves toward land later this week, future Alvin is not expected to have major impacts on the Mexican coast.
The system is currently in an environment that is favorable for development, with low wind shear and warm ocean temperatures.
But in the coming days, the system will move into an unfavorable environment.
"That’s usually how things work for the (Eastern Pacific)," FOX Weather Meteorologist Britta Merwin said. "You know, our water temperatures cool significantly off of Baja (California). This will generally be indirect impacts because, although this is tracking towards Baja (California) and also the Pacific coast of Mexico, it will no longer be a tropical system at that point because the water temperature is significantly cooler."