Tropical Storm Alvin, the first named storm of the 2025 eastern Pacific hurricane season, formed off the southern coast of Mexico on May 29. Forecasts indicate it will dissipate by the end of the week without making landfall.
Severe storms swept through central Texas on May 28, 2025, producing hailstones up to 7 cm (2.75 inches) in diameter, flash flooding, and wind gusts up to 124 km/h (77 mph). The storms caused extensive damage in Austin, leaving more than 68 000 customers without power and prompting multiple water rescues across the city.
The Blanco tornado that struck Pittsburg County, Oklahoma, on May 19, 2025, has been rated EF-3 by the National Weather Service (NWS). With a maximum width of 2.7 km (1.7 miles), it now ranks as the third-widest tornado recorded in Oklahoma since 1950.
Severe thunderstorms struck Houston, Texas, on May 27, 2025, causing nearly 200 000 power outages and significant infrastructure damage.
A rare and exceptionally powerful lightning strike, known as a superbolt, struck Tulsa, Oklahoma, on May 25, 2025, causing structural damage and shaking nearby homes with an electrical discharge estimated between 228 000 and 280 000 amps.
Giant hail measuring up to 15 cm (6 inches) struck Afton, Texas, on Sunday, May 25, 2025, as storms swept across the southern U.S. during Memorial Day weekend. The storms were accompanied by multiple tornadoes, with at least five reported in Texas, including one near Afton.
Severe storms swept across Oklahoma on Saturday, May 24, 2025, causing widespread damage and producing a likely tornado near Asher. The system is forecast to continue affecting Oklahoma and much of the southern United States, bringing flash floods and thunderstorms through the Memorial Day weekend.
A slow-moving storm system extending from the southeastern United States to the Central Rockies is forecast to bring severe thunderstorms and heavy rainfall to much of the southern U.S. during Memorial Day weekend, beginning Saturday, May 24, 2025.
A severe thunderstorm produced a damaging downburst in Pembroke Pines, Florida, on Friday, May 23, 2025, severely damaging multiple aircraft at North Perry Airport and prompting an emergency airport closure. Straight-line winds also caused widespread damage across Broward County, with hail reported along the Treasure Coast.
A rare May nor’easter brought widespread flooding and significant tree damage across Massachusetts on Thursday and Friday, May 22 and 23, 2025. The storm disrupted travel across multiple regions and led to several rescue operations for motorists stranded in rising waters.
