Flash Flood Warnings in West Virginia, 2020

By month

36 of 61 flash flood warnings covering West Virginia in 2020 had a flash flood report inside them; 70 of 102 flash flood reports fell inside a warning, on average 63 minutes after it went out.

West Virginia, 2020

Each office's whole area, 2020

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

• Braxton County7
• McDowell County6
• Clay County5
• Ritchie County5
• Roane County5
• Logan County4
• Fayette County4
• Kanawha County4
• Nicholas County4
• Webster County4
• Wirt County4
• Gilmer County4
• Randolph County4
• Upshur County4
• Calhoun County4
• Brooke County3
• Hancock County3
• Ohio County3
• Doddridge County3
• Boone County3
• Wood County3
• Monroe County3
• Harrison County3
• Lewis County3
• Cabell County3
• Lincoln County3
• Mingo County2
• Marshall County2
• Greenbrier County2
• Jackson County2
• Wayne County2
• Wyoming County1
• Putnam County1
• Mineral County1
• Tyler County1
• Barbour County1
• Taylor County1
• Marion County1
• Monongalia County1
• Pleasants County1

1. June 14, 20206flash flood warnings
2. June 30, 20204flash flood warnings
3. July 30, 20204flash flood warnings
4. March 28, 20203flash flood warnings
5. May 29, 20203flash flood warnings
6. August 22, 20203flash flood warnings
7. September 3, 20203flash flood warnings
8. March 29, 20202flash flood warnings
9. April 8, 20202flash flood warnings
10. June 19, 20202flash flood warnings
11. June 28, 20202flash flood warnings
12. July 8, 20202flash flood warnings

Alerts in force nowTornadoes on recordThe radar archive20192021

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.