Alert archive / West Virginia / Flash Flood Warnings
Flash Flood Warnings in West Virginia, 2015
72 flash flood warnings in 2015. 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 2015. Tap one for its archive.
- Flash Flood Warnings
- 72
- Busiest month
- July46 flash flood warnings
- Busiest day
- July 14, 201512 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.
53 of 72 flash flood warnings covering West Virginia in 2015 had a flash flood report inside them; 133 of 156 flash flood reports fell inside a warning, on average 94 minutes after it went out.
West Virginia, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Flash flood warnings | 72 | 53 | 26% | 156 | 85% | 94 min |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Charleston, WV: flash flood warnings | 70 | 55 | 21% | 214 | 89% | 98 min |
| NWS Baltimore/Washington: flash flood warnings | 89 | 47 | 47% | 138 | 74% | 64 min |
| NWS Pittsburgh, PA: flash flood warnings | 49 | 38 | 22% | 140 | 91% | 106 min |
| NWS Blacksburg, VA: flash flood warnings | 30 | 18 | 40% | 55 | 84% | 80 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 3, 6:30 PM EDT | Flash Flood Warning | RLX | Lincoln, Wayne | 3 hr |
| Apr 3, 7:31 PM EDT | Flash Flood Warning | RLX | Boone, Fayette, Kanawha, Logan, Raleigh, Wyoming | 3 hr |
| Apr 8, 8:26 PM EDT | Flash Flood Warning | RLX | Doddridge, Gilmer, Jackson, Pleasants, Ritchie, Tyler and 2 more | 6 hr |
| Apr 8, 10:43 PM EDT | Flash Flood Warning | RLX | Barbour, Doddridge, Harrison, Taylor | 4 hr |
| Apr 9, 3:57 AM EDT | Flash Flood Warning | RLX | Barbour, Doddridge, Gilmer, Harrison, Lewis, Upshur | 3 hr |
| Apr 9, 11:18 PM EDT | Flash Flood Warning | PBZ | Wetzel | 4 hr |
| Apr 10, 5:58 AM EDT | Flash Flood Warning | RLX | Wood | 3 hr |
| Apr 10, 7:41 AM EDT | Flash Flood Warning | RLX | Doddridge, Pleasants, Ritchie, Tyler, Wood | 3 hr |
| May 16, 7:13 PM EDT | Flash Flood Warning | RNK | Mercer | 6 hr |
| Jun 1, 4:13 PM EDT | Flash Flood Warning | LWX | Hardy | 3 hr |
| Jun 5, 5:06 PM EDT | Flash Flood Warning | PBZ | Marshall, Ohio | 114 min |
| Jun 13, 3:03 PM EDT | Flash Flood Warning | RLX | Boone, Kanawha | 57 min |
| Jun 16, 12:44 AM EDT | Flash Flood Warning | PBZ | Brooke, Hancock | 7 hr |
| Jun 16, 5:15 PM EDT | Flash Flood Warning | RLX | Boone, Fayette, Kanawha, Lincoln | 3 hr |
| Jun 20, 3:38 PM EDT | Flash Flood Warning | PBZ | Marion, Monongalia | 6 hr |
| Jun 20, 3:58 PM EDT | Flash Flood Warning | PBZ | Preston | 8 hr |
| Jun 20, 4:33 PM EDT | Flash Flood Warning | RLX | Barbour, Braxton, Calhoun, Doddridge, Gilmer, Harrison and 4 more | 6 hr |
| Jun 20, 8:47 PM EDT | Flash Flood Warning | RLX | Clay, Nicholas, Webster | 6 hr |
| Jun 23, 5:24 PM EDT | Flash Flood Warning | LWX | Mineral | 4 hr |
| Jun 26, 5:31 PM EDT | Flash Flood Warning | RLX | Mason | 6 hr |
| Jun 27, 1:10 AM EDT | Flash Flood Warning | RNK | Greenbrier | 6 hr |
| Jun 29, 6:22 PM EDT | Flash Flood Warning | RLX | Cabell, Mason, Putnam | 4 hr |
| Jun 30, 9:52 PM EDT | Flash Flood Warning | LWX | Berkeley, Jefferson | 4 hr |
| Jul 5, 4:56 PM EDT | Flash Flood Warning | RLX | Boone, Lincoln, Logan, McDowell, Mingo, Wyoming | 4 hr |
| Jul 5, 5:57 PM EDT | Flash Flood Warning | RLX | McDowell, Raleigh, Wyoming | 3 hr |
| Jul 5, 7:11 PM EDT | Flash Flood Warning | RLX | Barbour, Randolph, Upshur | 3 hr |
| Jul 5, 7:37 PM EDT | Flash Flood Warning | RNK | Mercer | 6 hr |
| Jul 5, 8:07 PM EDT | Flash Flood Warning | RNK | Mercer | 6 hr |
| Jul 8, 5:40 PM EDT | Flash Flood Warning | RLX | Calhoun, Jackson, Roane | 4 hr |
| Jul 10, 11:48 AM EDT | Flash Flood Warning | RLX | Braxton, Calhoun, Clay, Kanawha, Roane | 3 hr |
| Jul 10, 12:51 PM EDT | Flash Flood Warning | RLX | Braxton, Clay, Fayette, Nicholas, Webster | 3 hr |
| Jul 10, 4:21 PM EDT | Flash Flood Warning | RLX | Cabell | 3 hr |
| Jul 10, 4:58 PM EDT | Flash Flood Warning | RLX | Clay, Fayette, Kanawha, Nicholas | 3 hr |
| Jul 10, 7:08 PM EDT | Flash Flood Warning | RLX | Braxton, Webster | 3 hr |
| Jul 10, 9:48 PM EDT | Flash Flood Warning | RLX | Mason | 3 hr |
| Jul 10, 10:28 PM EDT | Flash Flood Warning | RLX | Jackson, Mason | 3 hr |
| Jul 11, 1:05 AM EDT | Flash Flood Warning | RLX | Kanawha, Putnam | 4 hr |
| Jul 11, 1:34 AM EDT | Flash Flood Warning | RLX | Braxton, Clay, Jackson, Kanawha, Nicholas, Putnam and 1 more | 4 hr |
| Jul 11, 3:15 AM EDT | Flash Flood Warning | RLX | Nicholas, Webster | 4 hr |
| Jul 12, 9:13 PM EDT | Flash Flood Warning | RLX | Wirt, Wood | 7 hr |
| Jul 12, 10:02 PM EDT | Flash Flood Warning | RLX | Wood | 3 hr |
| Jul 12, 10:08 PM EDT | Flash Flood Warning | RLX | Calhoun, Wirt | 3 hr |
| Jul 12, 11:57 PM EDT | Flash Flood Warning | RNK | Mercer | 3 hr |
| Jul 13, 3:47 AM EDT | Flash Flood Warning | RLX | Nicholas, Webster | 3 hr |
| Jul 13, 3:57 AM EDT | Flash Flood Warning | RNK | Greenbrier | 4 hr |
| Jul 13, 5:43 AM EDT | Flash Flood Warning | RLX | Braxton, Webster | 6 hr |
| Jul 13, 4:18 PM EDT | Flash Flood Warning | RLX | Cabell | 3 hr |
| Jul 13, 5:34 PM EDT | Flash Flood Warning | RLX | Calhoun, Roane, Wirt | 3 hr |
| Jul 13, 5:44 PM EDT | Flash Flood Warning | RLX | Clay, Kanawha | 3 hr |
| Jul 13, 6:31 PM EDT | Flash Flood Warning | RLX | Braxton, Clay, Nicholas, Webster | 4 hr |
| Jul 14, 1:30 AM EDT | Flash Flood Warning | RLX | Mason | 6 hr |
| Jul 14, 1:51 AM EDT | Flash Flood Warning | RLX | Boone, Cabell, Jackson, Kanawha, Mason, Putnam and 1 more | 5 hr |
| Jul 14, 2:10 AM EDT | Flash Flood Warning | RLX | Cabell, Wayne | 3 hr |
| Jul 14, 2:23 AM EDT | Flash Flood Warning | RLX | Boone, Cabell, Kanawha, Lincoln, Logan, Mingo and 2 more | 4 hr |
| Jul 14, 2:48 AM EDT | Flash Flood Warning | RLX | Jackson | 3 hr |
| Jul 14, 3:21 AM EDT | Flash Flood Warning | RLX | Boone, Clay, Fayette, Kanawha, Logan, McDowell and 5 more | 6 hr |
| Jul 14, 4:18 AM EDT | Flash Flood Warning | RLX | McDowell | 3 hr |
| Jul 14, 6:05 AM EDT | Flash Flood Warning | RLX | Boone, Cabell, Kanawha, Lincoln, Logan, Mingo and 2 more | 6 hr |
| Jul 14, 4:56 PM EDT | Flash Flood Warning | RLX | Cabell, Mason, Putnam | 4 hr |
| Jul 14, 5:54 PM EDT | Flash Flood Warning | RLX | Lincoln, Wayne | 4 hr |
| Jul 14, 6:06 PM EDT | Flash Flood Warning | RLX | Boone, Kanawha, Logan, Mingo | 4 hr |
| Jul 14, 6:59 PM EDT | Flash Flood Warning | RLX | McDowell, Wyoming | 4 hr |
| Jul 18, 4:38 AM EDT | Flash Flood Warning | RLX | Barbour, Harrison, Lewis, Taylor, Upshur | 3 hr |
| Jul 18, 8:31 PM EDT | Flash Flood Warning | RLX | Kanawha, Putnam | 3 hr |
| Jul 21, 5:14 AM EDT | Flash Flood Warning | RLX | Cabell, Wayne | 3 hr |
| Jul 27, 3:54 PM EDT | Flash Flood Warning | LWX | Hampshire | 3 hr |
| Jul 28, 2:56 PM EDT | Flash Flood Warning | LWX | Pendleton | 3 hr |
| Jul 28, 4:47 PM EDT | Flash Flood Warning | LWX | Grant, Hardy | 3 hr |
| Aug 7, 8:00 PM EDT | Flash Flood Warning | RLX | Braxton, Nicholas, Webster | 3 hr |
| Aug 17, 10:16 PM EDT | Flash Flood Warning | RLX | Kanawha, Lincoln, Putnam | 3 hr |
| Aug 18, 1:35 AM EDT | Flash Flood Warning | RLX | Pleasants, Ritchie | 3 hr |
| Aug 18, 2:11 AM EDT | Flash Flood Warning | RLX | Doddridge, Pleasants, Ritchie, Tyler | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Kanawha County15
- Boone County9
- Nicholas County9
- Cabell County9
- Putnam County9
- Braxton County8
- Clay County8
- Webster County8
- Lincoln County7
- Wayne County7
- Mason County7
- Logan County6
- Doddridge County6
- Jackson County6
- Fayette County5
- Wyoming County5
- Ritchie County5
- Wood County5
- Barbour County5
- Calhoun County5
- McDowell County5
- Mingo County5
- Roane County5
- Pleasants County4
- Wirt County4
- Harrison County4
- Upshur County4
- Mercer County4
- Raleigh County3
- Gilmer County3
- Tyler County3
- Taylor County3
- Lewis County3
- Hardy County2
- Greenbrier County2
- Wetzel County1
- Marshall County1
- Ohio County1
- Brooke County1
- Hancock County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20142016
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.