Maximum sustained winds have increased to near 65 miles per hour (100 kph) with higher gusts. It could grow into a Category 4 sometime Friday.
The first tropical storm of the eastern Pacific hurricane season formed well off the coast of Mexico on Wednesday, but forecasters said it's not a threat to land.
Centered just under 500 miles south of Mexico's Baja Peninsula, Aletta transformed from a tropical storm into a Category 4 hurricane in just 24 hours.
At 5 a.m. EDT (0900 UTC) on June 6, the center of Tropical Storm Aletta was located near latitude 14.6 degrees north and longitude 109.2 degrees west.
GW Hall & Son Seafood in Maryland. VOA
Flash flooding and damaging winds are not expected from the hurricane at the start of next week.
AccuWeather Hurricane Expert Dan Kottlowski said: "Since this system will track over and through an environment very similar to what Aletta experienced, there's a good chance that it will become a hurricane". "These conditions will likely cause significant weakening of Aletta over the weekend, with rapid weakening predicted by Sunday".
The average date when the first named storm forms in the Eastern Pacific Basin is June 10, according to NHC data from 1971 to 2009.
Jonathan Erdman is a senior meteorologist at weather.com and has been an incurable weather geek since a tornado narrowly missed his childhood home in Wisconsin at age 7.More news: G7 row: Emmanuel Macron attacks Donald Trump's 'fits of anger'
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