Alert archive / Indiana / Flash Flood Warnings
Flash Flood Warnings in Indiana, 2024
36 flash flood warnings in 2024. 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 2024. Tap one for its archive.
- Flash Flood Warnings
- 36
- Busiest month
- July17 flash flood warnings
- Busiest day
- August 1, 20246 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.
18 of 36 flash flood warnings covering Indiana in 2024 had a flash flood report inside them; 27 of 36 flash flood reports fell inside a warning, on average 58 minutes after it went out.
Indiana, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Flash flood warnings | 36 | 18 | 50% | 36 | 75% | 58 min |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Northern Indiana: flash flood warnings | 2 | 0 | 100% | 3 | 0% | |
| NWS Chicago, IL: flash flood warnings | 22 | 6 | 73% | 72 | 72% | 85 min |
| NWS Paducah, KY: flash flood warnings | 77 | 39 | 49% | 76 | 82% | 106 min |
| NWS Indianapolis, IN: flash flood warnings | 10 | 6 | 40% | 6 | 100% | 60 min |
| NWS Wilmington, OH: flash flood warnings | 24 | 12 | 50% | 69 | 57% | 71 min |
| NWS Louisville, KY: flash flood warnings | 26 | 16 | 38% | 31 | 87% | 98 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 |
|---|---|---|---|---|
| Mar 5, 5:38 PM EST | Flash Flood Warning | IND | Greene | 3 hr |
| Mar 5, 6:41 PM EST | Flash Flood Warning | IND | Daviess | 4 hr |
| Mar 5, 7:50 PM EST | Flash Flood Warning | IND | Daviess, Knox | 3 hr |
| Apr 1, 10:03 PM EDT | Flash Flood Warning | IND | Putnam | 3 hr |
| May 7, 8:27 PM EDT | Flash Flood Warning | ILN | Fayette, Franklin, Union | 3 hr |
| May 7, 9:40 PM EDT | Flash Flood Warning | ILN | Dearborn, Franklin, Ripley | 3 hr |
| May 8, 5:35 PM EDT | Flash Flood Warning | IND | Jackson, Jennings | 3 hr |
| May 14, 7:17 PM EDT | Flash Flood Warning | PAH | Warrick | 3 hr |
| May 14, 9:25 PM EDT | Flash Flood Warning | LMK | Dubois | 3 hr |
| May 20, 9:12 PM EDT | Flash Flood Warning | LOT | Jasper, Newton | 6 hr |
| Jun 5, 7:33 PM EDT | Flash Flood Warning | ILN | Fayette, Wayne | 5 hr |
| Jul 3, 5:31 PM EDT | Flash Flood Warning | LMK | Dubois | 4 hr |
| Jul 3, 6:28 PM EDT | Flash Flood Warning | LMK | Crawford, Dubois, Orange | 4 hr |
| Jul 3, 7:02 PM EDT | Flash Flood Warning | PAH | Gibson, Pike, Spencer, Warrick | 6 hr |
| Jul 3, 7:09 PM EDT | Flash Flood Warning | LMK | Crawford, Dubois, Perry | 3 hr |
| Jul 3, 7:49 PM EDT | Flash Flood Warning | PAH | Vanderburgh, Warrick | 5 hr |
| Jul 3, 8:49 PM EDT | Flash Flood Warning | PAH | Gibson, Pike | 4 hr |
| Jul 3, 9:05 PM EDT | Flash Flood Warning | PAH | Spencer | 4 hr |
| Jul 9, 4:37 PM EDT | Flash Flood Warning | LOT | Lake | 3 hr |
| Jul 13, 2:48 PM EDT | Flash Flood Warning | PAH | Vanderburgh, Warrick | 2 hr |
| Jul 28, 8:28 PM EDT | Flash Flood Warning | IND | Morgan, Owen | 3 hr |
| Jul 29, 10:58 PM EDT | Flash Flood Warning | ILN | Union, Wayne | 4 hr |
| Jul 29, 11:40 PM EDT | Flash Flood Warning | ILN | Union | 3 hr |
| Jul 30, 12:50 AM EDT | Flash Flood Warning | ILN | Union, Wayne | 107 min |
| Jul 30, 7:23 PM EDT | Flash Flood Warning | PAH | Gibson | 90 min |
| Jul 30, 7:45 PM EDT | Flash Flood Warning | PAH | Vanderburgh, Warrick | 2 hr |
| Jul 30, 8:08 PM EDT | Flash Flood Warning | PAH | Spencer | 113 min |
| Jul 31, 3:55 PM EDT | Flash Flood Warning | LMK | Clark, Floyd | 2 hr |
| Aug 1, 3:16 PM EDT | Flash Flood Warning | PAH | Posey, Vanderburgh | 3 hr |
| Aug 1, 3:47 PM EDT | Flash Flood Warning | PAH | Spencer, Warrick | 3 hr |
| Aug 1, 5:03 PM EDT | Flash Flood Warning | IND | Boone, Hamilton, Hendricks, Marion | 3 hr |
| Aug 1, 5:31 PM EDT | Flash Flood Warning | IND | Hamilton | 3 hr |
| Aug 1, 6:09 PM EDT | Flash Flood Warning | IND | Hamilton, Hancock, Madison, Marion | 2 hr |
| Aug 1, 6:21 PM EDT | Flash Flood Warning | IND | Delaware, Henry, Madison, Randolph | 2 hr |
| Sep 24, 3:11 PM EDT | Flash Flood Warning | ILN | Ohio, Switzerland | 54 min |
| Nov 5, 11:52 PM EST | Flash Flood Warning | PAH | Gibson, Posey, Vanderburgh, Warrick | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Warrick County7
- Vanderburgh County5
- Union County4
- Dubois County4
- Gibson County4
- Spencer County4
- Wayne County3
- Hamilton County3
- Daviess County2
- Fayette County2
- Franklin County2
- Crawford County2
- Pike County2
- Posey County2
- Marion County2
- Madison County2
- Greene County1
- Knox County1
- Putnam County1
- Dearborn County1
- Ripley County1
- Jackson County1
- Jennings County1
- Jasper County1
- Newton County1
- Orange County1
- Perry County1
- Lake County1
- Morgan County1
- Owen County1
- Clark County1
- Floyd County1
- Boone County1
- Hendricks County1
- Hancock County1
- Delaware County1
- Henry County1
- Randolph County1
- Ohio County1
- Switzerland County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20232025
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.