A swarm of small earthquakes has been shaking the desert northeast of Tonopah, Nevada, since late February 2026, with nearly a hundred shallow events recorded by the U.S. Geological Survey through 17:00 UTC on March 4.
The National Weather Service (NWS) issued numerous flood warnings on Wednesday, March 4, 2026, following 50–100 mm (2–4 inches) of rainfall across Indiana, Ohio, and West Virginia. Several rivers, including the East Fork White River, White River, and Big Blue River, are above flood stage, with additional rainfall forecast through the end of the week.
The District Department of Health lifted a recreational advisory for the Potomac River in Washington, D.C., on March 2, 2026, after three weeks of monitoring showed bacterial levels had returned to typical ranges following the January 19 collapse of the Potomac Interceptor sewer line. Repair operations advanced the following day as crews prepared the damaged pipe for structural reinforcement while environmental restoration continues in the affected section of the C&O Canal National Historical Park.
A multi-day storm event is forecast to unfold across the central and southern United States, with the Storm Prediction Center issuing a slight to enhanced risk of severe thunderstorms across the Southern and Central Plains from March 4 to 6, 2026.
A bright fireball streaked across the skies of the southern U.S. around 01:19 UTC on March 3, 2026, disintegrating above the Georgia Pacific Wildlife Management Area.
A lifting frontal boundary draped from the southern Plains to the Mid-Atlantic is producing a swath of mixed winter precipitation across the Ohio and Tennessee Valleys on March 2, 2026, while setting the stage for isolated severe thunderstorms in Oklahoma and Kansas on March 3. Winter weather advisories are in effect from Indiana to Pennsylvania, with ice accretion possible across the higher terrain of the Appalachians, according to the Weather Prediction Center.
Persistent slab avalanche hazards will be the main concern across the Cascade Range this weekend, according to the Northwest Avalanche Center. Forecasters say buried weak layers and recent wind loading have brought several zones close to a “tipping point,” warning that human-triggered avalanches remain possible even under clear skies.
Another warming of the Arctic stratosphere is now underway, with the polar vortex forecast to undergo a final split in March 2026. The zonal mean wind reversal around 60°N and 10 hPa is expected between February 28 and March 1, with its impacts propagating into the troposphere, likely shifting weather patterns over Europe and North America.
A confirmed tornado touched down in Jefferson County, Alabama, on February 26, 2026, damaging multiple homes in the Pinson area. Severe thunderstorms moved across parts of northern and central Alabama, bringing strong winds and large hail to Jefferson, St. Clair, Blount, and Calhoun counties, along with strong, damaging winds.
A grass fire ignited near 84th Avenue and Huron Street in Thornton, Colorado, at 11:30 LT on February 25, 2026, injuring five people, prompting the evacuation of Pinnacle Charter High School and nearby neighborhoods, and forcing a temporary closure of Interstate 25. The fire burned approximately 4 ha (10 acres) before it was contained at around 14:30 LT.
