May 4, 2024 -- EFU in Mercer County OH

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 >

Public Information Statement National Weather Service Wilmington OH 400 PM EDT Sun May 5 2024 ...TORNADO CONFIRMED IN MERCER COUNTY OHIO... Start Location...5 SW Rockford in Mercer County OH End Location.....4 SW Rockford in Mercer County OH Date...........................May 4, 2024 Estimated Start Time...........7:38 PM EDT Estimated End Time.............7:40 PM EDT Maximum EF-Scale Rating........EFU /Unknown/ Estimated Maximum Wind Speed...Unknown Maximum Path Width.............30 yards Path Length....................0.6 miles Beginning Lat/Lon..............40.6425 / -84.7133 Ending Lat/Lon.................40.6517 / -84.7127 * Fatalities...0 * Injuries.....0 ...Summary... The National Weather Service has confirmed a tornado during the evening of May 4, 2024 southwest of Rockford in Mercer County, Ohio. A weak landspout tornado was observed moving north in a field east of Burrville Road in northwestern Mercer County, Ohio. This tornado caused no known damage, so it is being rated EF-Unknown, as an official EF-scale designation cannot be assigned. The National Weather Service would like to thank the Mercer County Emergency Management Agency for their assistance with this tornado confirmation. EF Scale: The Enhanced Fujita Scale classifies tornadoes into the following categories: EF0...Weak......65 to 85 mph EF1...Weak......86 to 110 mph EF2...Strong....111 to 135 mph EF3...Strong....136 to 165 mph EF4...Violent...166 to 200 mph EF5...Violent...>200 mph * The information in this statement is preliminary and subject to change pending final review of the event and publication in NWS Storm Data. $$ HATZOS