Alert archive / West Virginia / Flash Flood Warnings
Flash Flood Warnings in West Virginia, 2019
90 flash flood warnings in 2019. 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 2019. Tap one for its archive.
- Flash Flood Warnings
- 90
- Busiest month
- July47 flash flood warnings
- Busiest day
- July 11, 201910 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.
41 of 90 flash flood warnings covering West Virginia in 2019 had a flash flood report inside them; 67 of 88 flash flood reports fell inside a warning, on average 74 minutes after it went out.
West Virginia, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Flash flood warnings | 90 | 41 | 54% | 88 | 76% | 74 min |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Baltimore/Washington: flash flood warnings | 36 | 16 | 56% | 74 | 96% | 103 min |
| NWS Charleston, WV: flash flood warnings | 78 | 32 | 59% | 84 | 77% | 58 min |
| NWS Blacksburg, VA: flash flood warnings | 35 | 14 | 60% | 52 | 48% | 70 min |
| NWS Pittsburgh, PA: flash flood warnings | 105 | 80 | 24% | 282 | 87% | 67 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 |
|---|---|---|---|---|
| May 4, 8:30 PM EDT | Flash Flood Warning | RLX | Boone, Lincoln, Wayne | 3 hr |
| May 4, 10:10 PM EDT | Flash Flood Warning | RLX | Kanawha | 8 hr |
| May 4, 10:16 PM EDT | Flash Flood Warning | RLX | Boone, Logan | 8 hr |
| May 4, 10:23 PM EDT | Flash Flood Warning | RLX | Boone, Fayette, Kanawha, Nicholas | 5 hr |
| May 5, 1:36 AM EDT | Flash Flood Warning | RLX | Boone, Fayette, Kanawha, Logan, Mingo, Raleigh and 1 more | 94 min |
| May 12, 3:00 PM EDT | Flash Flood Warning | RLX | McDowell | 2 hr |
| May 17, 6:13 PM EDT | Flash Flood Warning | RLX | Barbour, Harrison, Lewis, Randolph, Upshur | 3 hr |
| May 25, 1:02 PM EDT | Flash Flood Warning | RLX | Pleasants, Tyler | 3 hr |
| May 25, 2:48 PM EDT | Flash Flood Warning | RLX | Harrison, Taylor | 3 hr |
| May 29, 2:05 PM EDT | Flash Flood Warning | PBZ | Hancock | 88 min |
| May 31, 12:20 PM EDT | Flash Flood Warning | RLX | Mason | 3 hr |
| May 31, 1:46 PM EDT | Flash Flood Warning | RLX | Cabell, Kanawha, Lincoln, Putnam | 3 hr |
| May 31, 2:19 PM EDT | Flash Flood Warning | RLX | Jackson, Kanawha, Roane | 3 hr |
| May 31, 3:01 PM EDT | Flash Flood Warning | RLX | Roane | 3 hr |
| Jun 2, 2:17 PM EDT | Flash Flood Warning | RLX | Cabell, Lincoln, Wayne | 3 hr |
| Jun 6, 8:33 PM EDT | Flash Flood Warning | RLX | Raleigh, Wyoming | 80 min |
| Jun 18, 11:48 PM EDT | Flash Flood Warning | PBZ | Hancock | 3 hr |
| Jun 19, 6:58 PM EDT | Flash Flood Warning | RLX | Tyler | 62 min |
| Jun 19, 7:04 PM EDT | Flash Flood Warning | PBZ | Wetzel | 3 hr |
| Jun 19, 7:44 PM EDT | Flash Flood Warning | PBZ | Wetzel | 6 hr |
| Jun 19, 8:01 PM EDT | Flash Flood Warning | PBZ | Marshall | 119 min |
| Jun 19, 8:43 PM EDT | Flash Flood Warning | PBZ | Marshall, Ohio | 2 hr |
| Jun 19, 11:17 PM EDT | Flash Flood Warning | PBZ | Hancock | 3 hr |
| Jun 24, 7:21 PM EDT | Flash Flood Warning | PBZ | Brooke, Ohio | 3 hr |
| Jun 29, 10:33 PM EDT | Flash Flood Warning | PBZ | Preston | 10 hr |
| Jun 30, 12:26 AM EDT | Flash Flood Warning | PBZ | Preston, Tucker | 3 hr |
| Jun 30, 1:35 AM EDT | Flash Flood Warning | LWX | Grant | 3 hr |
| Jun 30, 2:49 AM EDT | Flash Flood Warning | LWX | Grant | 6 hr |
| Jun 30, 3:02 AM EDT | Flash Flood Warning | RLX | Randolph | 4 hr |
| Jun 30, 3:14 AM EDT | Flash Flood Warning | PBZ | Preston, Tucker | 9 hr |
| Jun 30, 3:35 AM EDT | Flash Flood Warning | LWX | Grant | 3 hr |
| Jun 30, 3:44 AM EDT | Flash Flood Warning | LWX | Pendleton | 3 hr |
| Jun 30, 4:15 AM EDT | Flash Flood Warning | LWX | Grant | 2 hr |
| Jul 3, 7:31 PM EDT | Flash Flood Warning | RLX | Pleasants, Wood | 81 min |
| Jul 4, 1:35 PM EDT | Flash Flood Warning | RLX | Barbour | 115 min |
| Jul 4, 1:49 PM EDT | Flash Flood Warning | PBZ | Tucker | 3 hr |
| Jul 4, 2:11 PM EDT | Flash Flood Warning | RLX | Randolph | 2 hr |
| Jul 4, 2:13 PM EDT | Flash Flood Warning | RLX | Randolph | 2 hr |
| Jul 4, 2:24 PM EDT | Flash Flood Warning | RLX | Nicholas, Webster | 3 hr |
| Jul 4, 2:30 PM EDT | Flash Flood Warning | LWX | Grant | 2 hr |
| Jul 4, 2:32 PM EDT | Flash Flood Warning | PBZ | Preston, Tucker | 3 hr |
| Jul 4, 2:44 PM EDT | Flash Flood Warning | RLX | Harrison, Taylor | 3 hr |
| Jul 5, 12:31 PM EDT | Flash Flood Warning | RLX | Pocahontas, Randolph | 73 min |
| Jul 5, 12:40 PM EDT | Flash Flood Warning | RLX | Randolph | 2 hr |
| Jul 6, 7:13 PM EDT | Flash Flood Warning | RLX | Pleasants, Tyler | 4 hr |
| Jul 6, 7:33 PM EDT | Flash Flood Warning | RLX | Doddridge, Harrison, Tyler | 4 hr |
| Jul 6, 9:43 PM EDT | Flash Flood Warning | RLX | Ritchie | 62 min |
| Jul 7, 10:18 PM EDT | Flash Flood Warning | RLX | Kanawha, Putnam | 3 hr |
| Jul 7, 11:54 PM EDT | Flash Flood Warning | RLX | Randolph, Upshur | 3 hr |
| Jul 8, 12:27 AM EDT | Flash Flood Warning | LWX | Berkeley | 4 hr |
| Jul 8, 12:42 AM EDT | Flash Flood Warning | LWX | Jefferson | 3 hr |
| Jul 11, 12:13 PM EDT | Flash Flood Warning | RLX | Doddridge, Pleasants, Ritchie, Tyler, Wood | 2 hr |
| Jul 11, 1:22 PM EDT | Flash Flood Warning | PBZ | Marion, Monongalia, Preston | 3 hr |
| Jul 11, 1:40 PM EDT | Flash Flood Warning | LWX | Grant, Pendleton | 4 hr |
| Jul 11, 2:24 PM EDT | Flash Flood Warning | RLX | Pocahontas | 3 hr |
| Jul 11, 2:29 PM EDT | Flash Flood Warning | PBZ | Preston | 3 hr |
| Jul 11, 2:29 PM EDT | Flash Flood Warning | RLX | Braxton, Lewis, Randolph, Upshur, Webster | 3 hr |
| Jul 11, 2:40 PM EDT | Flash Flood Warning | PBZ | Brooke, Ohio | 5 hr |
| Jul 11, 2:40 PM EDT | Flash Flood Warning | RLX | Barbour, Randolph | 2 hr |
| Jul 11, 3:07 PM EDT | Flash Flood Warning | PBZ | Preston, Tucker | 118 min |
| Jul 11, 3:15 PM EDT | Flash Flood Warning | PBZ | Brooke, Ohio | 4 hr |
| Jul 11, 8:41 PM EDT | Flash Flood Warning | RLX | Doddridge, Ritchie | 2 hr |
| Jul 14, 3:59 PM EDT | Flash Flood Warning | PBZ | Tucker | 2 hr |
| Jul 14, 5:15 PM EDT | Flash Flood Warning | RLX | Barbour, Randolph | 3 hr |
| Jul 14, 5:45 PM EDT | Flash Flood Warning | RLX | Barbour, Taylor | 3 hr |
| Jul 15, 4:11 PM EDT | Flash Flood Warning | RLX | Pleasants, Ritchie, Wood | 96 min |
| Jul 17, 11:33 PM EDT | Flash Flood Warning | RLX | Doddridge, Ritchie | 103 min |
| Jul 18, 12:25 AM EDT | Flash Flood Warning | RLX | Harrison, Taylor | 3 hr |
| Jul 20, 8:51 PM EDT | Flash Flood Warning | RLX | McDowell | 54 min |
| Jul 21, 2:10 PM EDT | Flash Flood Warning | RLX | Jackson, Wood | 3 hr |
| Jul 21, 4:14 PM EDT | Flash Flood Warning | RLX | Braxton, Clay, Nicholas, Webster | 3 hr |
| Jul 22, 5:04 PM EDT | Flash Flood Warning | RLX | Doddridge, Harrison, Ritchie | 4 hr |
| Jul 22, 6:33 PM EDT | Flash Flood Warning | RLX | Cabell, Wayne | 3 hr |
| Jul 22, 6:42 PM EDT | Flash Flood Warning | RLX | Wayne | 3 hr |
| Jul 22, 7:10 PM EDT | Flash Flood Warning | RLX | Boone, Lincoln, Logan, Mingo, Wayne | 3 hr |
| Jul 22, 7:49 PM EDT | Flash Flood Warning | RLX | Boone, Fayette, Kanawha, Logan, Raleigh | 3 hr |
| Jul 22, 8:18 PM EDT | Flash Flood Warning | RLX | Boone, Logan, Mingo, Raleigh, Wyoming | 3 hr |
| Jul 30, 10:03 PM EDT | Flash Flood Warning | RLX | Doddridge, Gilmer, Lewis | 3 hr |
| Jul 31, 6:25 PM EDT | Flash Flood Warning | RLX | Calhoun | 44 min |
| Jul 31, 6:39 PM EDT | Flash Flood Warning | RLX | Barbour | 3 hr |
| Jul 31, 8:57 PM EDT | Flash Flood Warning | RLX | Fayette | 2 hr |
| Aug 2, 1:50 PM EDT | Flash Flood Warning | PBZ | Preston | 88 min |
| Aug 7, 4:16 AM EDT | Flash Flood Warning | RLX | Cabell | 119 min |
| Aug 8, 5:15 PM EDT | Flash Flood Warning | RLX | Pleasants, Ritchie | 5 hr |
| Aug 8, 5:54 PM EDT | Flash Flood Warning | RLX | Ritchie | 5 hr |
| Aug 8, 6:11 PM EDT | Flash Flood Warning | RLX | Wood | 3 hr |
| Aug 8, 8:00 PM EDT | Flash Flood Warning | RLX | Wood | 3 hr |
| Aug 9, 2:17 AM EDT | Flash Flood Warning | RLX | Gilmer, Lewis, Ritchie | 4 hr |
| Aug 18, 2:35 PM EDT | Flash Flood Warning | RLX | Pleasants, Tyler | 115 min |
| Aug 23, 9:29 AM EDT | Flash Flood Warning | RLX | Braxton, Clay, Kanawha, Nicholas, Randolph, Roane and 2 more | 77 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Randolph County11
- Ritchie County9
- Kanawha County8
- Preston County8
- Boone County7
- Pleasants County7
- Barbour County6
- Harrison County6
- Tyler County6
- Tucker County6
- Grant County6
- Wood County6
- Doddridge County6
- Wayne County5
- Logan County5
- Lincoln County4
- Fayette County4
- Nicholas County4
- Raleigh County4
- Lewis County4
- Upshur County4
- Taylor County4
- Cabell County4
- Ohio County4
- Webster County4
- Mingo County3
- Wyoming County3
- Hancock County3
- Roane County3
- Brooke County3
- Braxton County3
- McDowell County2
- Putnam County2
- Jackson County2
- Wetzel County2
- Marshall County2
- Pendleton County2
- Pocahontas County2
- Clay County2
- Gilmer County2
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20182020
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.