Volcanic unrest continues at Mount Spurr, Alaska, with elevated seismic activity, surface deformation, persistent gas emissions, and visible summit steaming. The current unrest indicates that new magma has intruded into the Earth’s crust beneath the volcano and that the probability of an eruption has increased. The last known eruption at this volcano took place in 1992 (VEI 4).
Severe flash floods hit McAllen (population 146 000) as a line of thunderstorms swept across South Texas on Thursday, March 27, 2025, bringing 152 to 254 mm (6 to 10 inches) to parts of the region. Floodwaters entered a medical center in McAllen and submerged key routes across southern Texas, leading to hazardous travel conditions and extensive damage.
U.S. weather models, including NCEP and GEFS, project an over 80% chance of a strong atmospheric river making landfall in northern and central California from April 1 to 2, 2025, with additional outlooks from the NWS Climate Prediction Center (CPC) indicating wetter-than-normal conditions and a moderate risk of heavy rain and mountain snow between March 31 and April 4.
Severe thunderstorms swept through Seattle and much of the Pacific Northwest on March 26, 2025, after the National Weather Service (NWS) issued the first Severe Thunderstorm Watch for Seattle since 1999. The storms brought hail, rain, and frequent lightning that damaged multiple structures.
Intense hailstorms battered much of northern Texas from Tuesday night into Wednesday morning, March 25–26, 2025, causing damage to multiple vehicles and homes.
The Storm Prediction Center (SPC) has issued a rare level 2 out of 5, or Slight Risk, for severe thunderstorms across parts of the Pacific Northwest from March 26 to 27, potentially impacting over 7.2 million people in major cities such as Seattle, Portland, and Vancouver. The threats include hail in excess of 2.5 cm (1 inch), wind gusts over 93 km/h (58 mph), and possible isolated tornadoes.
An unsettled weather pattern is forecast to continue into next week, with multiple atmospheric rivers expected to bring heavy precipitation to the U.S. West Coast following a March 23 event that caused flooding and a landslide in British Columbia.
Severe thunderstorms swept through the southern United States and the Gulf Coast early on March 24, 2025, after passing over Texas and causing widespread damage across the affected regions.
A strong and shallow earthquake registered by the USGS as M6.2 hit near Adak, Andreanof Islands, Aleutian Islands, Alaska at 14:53 UTC on March 21, 2025. The agency is reporting a depth of 26 km (16 miles). EMSC is reporting M6.2 at a depth of 30 km (18 miles).
A Critical Fire Weather Outlook has been issued for over 93 240 km² (36 000 square miles) of central Texas on Friday, March 21, 2025, with gusty winds and low humidity expected to create dangerous fire conditions for approximately 1.5 million residents.
