Monitoring Tsunami Impacts Across the Pacific; Air Quality Concerns; Dangerous Heat; Critical Fire Weather for the West

Tsunami impacts continue for portions of the Pacific basin. Wildfire smoke causes unhealthy air in Midwest to Great Lakes. Heat dome spans Mississippi Valley to Mid-Atlantic with excessive heat warnings and advisories. Critical fire weather in Great Basin to Pacific Northwest (dry thunderstorms). Cold front spawns severe storms/heavy rain in Central U.S. today, shifts to East Coast Thursday. Read More >

February 28, 2011
Severe Weather & Flooding

Low pressure moved northeast through the Ohio Valley early on the morning of Monday, February 28. A cold front passed through the region, interacting with an airmass that was unseasonably warm and moist for late winter. This weather system produced widespread heavy rainfall and severe weather, as a squall line moved east through the forecast area.