Overview

• Tropical Storm Alvin formed May 29 about 670 miles south-southeast of Mexico’s Baja Peninsula, becoming the first named storm in the Northern Hemisphere this year.
• As of May 29, Alvin was moving northwest at 10 mph with sustained winds of 40 mph and is expected to weaken without making landfall.
• Forecasters predict Alvin will intensify to around 60 mph before wind shear and dry air reduce it to a remnant low by the weekend.
• The storm’s remnants are forecast to deliver up to an inch of rain to southwestern Mexico on Sunday and boost showers and thunderstorms across the U.S. Southwest early next week.
• Unusually warm ocean temperatures linked to human-caused climate change fueled Alvin’s development despite NOAA’s forecast for a below-average eastern Pacific hurricane season.