Alert archive / West Virginia / Flash Flood Warnings
Flash Flood Warnings in West Virginia, 2023
55 flash flood warnings in 2023. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of flash flood warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count in 2023. Tap one for its archive.
- Flash Flood Warnings
- 55
- Busiest month
- August26 flash flood warnings
- Busiest day
- September 9, 20239 flash flood warnings
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
29 of 55 flash flood warnings covering West Virginia in 2023 had a flash flood report inside them; 74 of 103 flash flood reports fell inside a warning, on average 51 minutes after it went out.
West Virginia, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Flash flood warnings | 55 | 29 | 47% | 103 | 72% | 51 min |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Charleston, WV: flash flood warnings | 45 | 23 | 49% | 98 | 77% | 55 min |
| NWS Pittsburgh, PA: flash flood warnings | 32 | 19 | 41% | 63 | 71% | 49 min |
| NWS Baltimore/Washington: flash flood warnings | 48 | 23 | 52% | 47 | 98% | 48 min |
| NWS Blacksburg, VA: flash flood warnings | 30 | 18 | 40% | 60 | 70% | 88 min |
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.
The alerts
Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 1, 6:11 AM EDT | Flash Flood Warning | RLX | Braxton, Clay, Gilmer, Lewis, Nicholas | 91 min |
| May 29, 8:34 AM EDT | Flash Flood Warning | RNK | Mercer | 6 hr |
| May 29, 8:58 AM EDT | Flash Flood Warning | RNK | Mercer | 6 hr |
| Jul 1, 6:06 PM EDT | Flash Flood Warning | PBZ | Hancock | 4 hr |
| Jul 2, 8:17 PM EDT | Flash Flood Warning | PBZ | Brooke, Hancock | 4 hr |
| Jul 2, 8:41 PM EDT | Flash Flood Warning | PBZ | Brooke, Hancock | 3 hr |
| Jul 4, 7:12 PM EDT | Flash Flood Warning | RLX | Calhoun, Gilmer | 3 hr |
| Jul 4, 8:00 PM EDT | Flash Flood Warning | RLX | Roane | 2 hr |
| Jul 6, 7:04 PM EDT | Flash Flood Warning | LWX | Hardy | 105 min |
| Jul 13, 11:32 PM EDT | Flash Flood Warning | RLX | Fayette, Raleigh | 107 min |
| Jul 14, 12:06 AM EDT | Flash Flood Warning | RLX | McDowell, Wyoming | 3 hr |
| Jul 14, 12:57 AM EDT | Flash Flood Warning | RNK | Mercer, Monroe | 2 hr |
| Jul 14, 3:50 PM EDT | Flash Flood Warning | LWX | Pendleton | 3 hr |
| Jul 18, 12:38 AM EDT | Flash Flood Warning | RLX | Jackson, Wirt, Wood | 3 hr |
| Jul 27, 11:41 PM EDT | Flash Flood Warning | RLX | Kanawha, Putnam | 3 hr |
| Jul 29, 12:58 AM EDT | Flash Flood Warning | RLX | Doddridge, Gilmer, Lewis, Pleasants, Ritchie | 3 hr |
| Jul 29, 4:25 AM EDT | Flash Flood Warning | PBZ | Marion, Wetzel | 80 min |
| Aug 7, 12:29 PM EDT | Flash Flood Warning | RLX | Pleasants, Wood | 4 hr |
| Aug 7, 1:11 PM EDT | Flash Flood Warning | RLX | Jackson, Mason, Wood | 3 hr |
| Aug 7, 1:45 PM EDT | Flash Flood Warning | PBZ | Marion, Wetzel | 3 hr |
| Aug 7, 1:54 PM EDT | Flash Flood Warning | RLX | Doddridge, Harrison, Pleasants, Ritchie, Tyler | 3 hr |
| Aug 7, 3:21 PM EDT | Flash Flood Warning | PBZ | Marion, Monongalia, Preston | 116 min |
| Aug 7, 4:28 PM EDT | Flash Flood Warning | LWX | Berkeley | 62 min |
| Aug 12, 6:02 PM EDT | Flash Flood Warning | PBZ | Hancock | 2 hr |
| Aug 12, 6:37 PM EDT | Flash Flood Warning | PBZ | Brooke, Hancock | 2 hr |
| Aug 12, 9:08 PM EDT | Flash Flood Warning | PBZ | Marshall, Monongalia, Ohio | 63 min |
| Aug 25, 11:38 AM EDT | Flash Flood Warning | RLX | Kanawha, Mason, Putnam | 3 hr |
| Aug 25, 12:09 PM EDT | Flash Flood Warning | RLX | Cabell, Kanawha, Lincoln, Putnam | 3 hr |
| Aug 25, 12:56 PM EDT | Flash Flood Warning | RLX | Boone, Kanawha, Lincoln | 2 hr |
| Aug 26, 10:16 PM EDT | Flash Flood Warning | RLX | Boone, Kanawha | 2 hr |
| Aug 27, 8:25 PM EDT | Flash Flood Warning | RLX | McDowell | 4 hr |
| Aug 28, 6:34 AM EDT | Flash Flood Warning | RLX | Kanawha | 7 hr |
| Aug 28, 7:17 AM EDT | Flash Flood Warning | RLX | Boone, Kanawha | 6 hr |
| Aug 28, 7:27 AM EDT | Flash Flood Warning | RLX | Boone | 5 hr |
| Aug 28, 7:31 AM EDT | Flash Flood Warning | RLX | Braxton, Calhoun, Clay, Roane | 5 hr |
| Aug 28, 7:58 AM EDT | Flash Flood Warning | RLX | Clay, Kanawha, Roane | 4 hr |
| Aug 28, 8:05 AM EDT | Flash Flood Warning | RLX | Boone, Kanawha | 6 hr |
| Aug 28, 10:22 AM EDT | Flash Flood Warning | RLX | Boone | 3 hr |
| Aug 28, 8:01 PM EDT | Flash Flood Warning | RLX | Harrison | 106 min |
| Aug 28, 10:11 PM EDT | Flash Flood Warning | RLX | Fayette, Nicholas | 2 hr |
| Aug 29, 3:41 PM EDT | Flash Flood Warning | RLX | Randolph | 6 hr |
| Aug 29, 4:50 PM EDT | Flash Flood Warning | RLX | Harrison | 3 hr |
| Aug 29, 5:33 PM EDT | Flash Flood Warning | RLX | Barbour, Harrison, Taylor | 3 hr |
| Sep 8, 6:45 PM EDT | Flash Flood Warning | LWX | Pendleton | 2 hr |
| Sep 8, 9:03 PM EDT | Flash Flood Warning | RLX | McDowell, Raleigh, Wyoming | 3 hr |
| Sep 8, 9:22 PM EDT | Flash Flood Warning | RLX | Pocahontas, Randolph, Webster | 5 hr |
| Sep 9, 3:27 PM EDT | Flash Flood Warning | RLX | Braxton, Webster | 4 hr |
| Sep 9, 5:39 PM EDT | Flash Flood Warning | RLX | McDowell | 3 hr |
| Sep 9, 5:42 PM EDT | Flash Flood Warning | RLX | Kanawha, Roane | 3 hr |
| Sep 9, 5:56 PM EDT | Flash Flood Warning | RLX | Randolph | 3 hr |
| Sep 9, 6:24 PM EDT | Flash Flood Warning | RLX | Logan, McDowell, Mingo, Wyoming | 3 hr |
| Sep 9, 6:30 PM EDT | Flash Flood Warning | RLX | Calhoun, Doddridge, Gilmer, Harrison, Jackson, Kanawha and 2 more | 3 hr |
| Sep 9, 7:13 PM EDT | Flash Flood Warning | RLX | Doddridge, Harrison | 3 hr |
| Sep 10, 2:14 PM EDT | Flash Flood Warning | RLX | Raleigh | 3 hr |
| Sep 10, 7:11 PM EDT | Flash Flood Warning | RLX | Braxton | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Kanawha County11
- Harrison County6
- Boone County6
- Hancock County5
- Roane County5
- McDowell County5
- Braxton County4
- Gilmer County4
- Doddridge County4
- Clay County3
- Lewis County3
- Mercer County3
- Brooke County3
- Calhoun County3
- Raleigh County3
- Wyoming County3
- Jackson County3
- Wood County3
- Putnam County3
- Pleasants County3
- Marion County3
- Randolph County3
- Nicholas County2
- Fayette County2
- Pendleton County2
- Ritchie County2
- Wetzel County2
- Mason County2
- Monongalia County2
- Lincoln County2
- Webster County2
- Hardy County1
- Monroe County1
- Wirt County1
- Tyler County1
- Preston County1
- Berkeley County1
- Marshall County1
- Ohio County1
- Cabell County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20222024
Sources
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.