Record rainfall struck Dallas–Fort Worth, Texas, on March 4, 2026, when Dallas–Fort Worth International Airport recorded 39.4 mm (1.55 inches) of rain, breaking the previous daily record of 32.3 mm (1.27 inches) set in 1937. The storms flooded highways across North Texas, caused the collapse of a commercial building roof on Kingsley Road, and triggered a lightning-caused house fire in Fort Worth.
A large marine heatwave has persisted along the U.S. West Coast since summer 2025, raising sea surface temperatures about 1.7–2.2°C (3–4°F) above average across parts of the Northeast Pacific. In a report published March 3, 2026, the National Oceanic and Atmospheric Administration (NOAA) Fisheries said this is only the third time in the observational record for the California Current ecosystem that such a large portion of coastal waters has remained anomalously warm for so long into winter without El Niño conditions.
A 33-year-old resident of Hawaiʻi was found dead after entering a closed area on the east side of the Kīlauea caldera in Hawaiʻi Volcanoes National Park on February 26, 2026. Authorities said the volcano was not erupting at the time of the incident, and the exact cause of death remains under investigation.
A strong and shallow earthquake registered by the USGS as M6.4 hit near the Rat Islands, Aleutian Islands, Alaska at 17:54 UTC on March 4, 2026. The agency is reporting a depth of 10 km (6.2 miles). EMSC is reporting the same magnitude and depth. According to the National Tsunami Warning Center (NTWC), there is no tsunami danger from this event.
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.
