Alert archive / Indiana / Flash Flood Warnings
Flash Flood Warnings in Indiana, 2010
87 flash flood warnings in 2010. 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 2010. Tap one for its archive.
- Flash Flood Warnings
- 87
- Busiest month
- June56 flash flood warnings
- Busiest day
- June 22, 201026 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 87 flash flood warnings covering Indiana in 2010 had a flash flood report inside them; 30 of 59 flash flood reports fell inside a warning, on average 90 minutes after it went out.
Indiana, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Flash flood warnings | 87 | 29 | 67% | 59 | 51% | 90 min |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Paducah, KY: flash flood warnings | 17 | 8 | 53% | 34 | 76% | 176 min |
| NWS Louisville, KY: flash flood warnings | 49 | 17 | 65% | 56 | 71% | 131 min |
| NWS Chicago, IL: flash flood warnings | 31 | 14 | 55% | 51 | 84% | 102 min |
| NWS Indianapolis, IN: flash flood warnings | 45 | 17 | 62% | 35 | 60% | 90 min |
| NWS Wilmington, OH: flash flood warnings | 45 | 29 | 36% | 66 | 86% | 120 min |
| NWS Northern Indiana: flash flood warnings | 21 | 8 | 62% | 30 | 53% | 112 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 1, 5:50 AM EDT | Flash Flood Warning | LMK | Dubois, Orange | 3 hr |
| May 2, 4:42 AM EDT | Flash Flood Warning | LMK | Crawford, Perry | 6 hr |
| May 2, 6:02 AM EDT | Flash Flood Warning | LMK | Perry | 6 hr |
| May 2, 8:27 AM EDT | Flash Flood Warning | LMK | Crawford, Harrison | 3 hr |
| May 2, 12:30 PM EDT | Flash Flood Warning | LMK | Clark, Floyd | 3 hr |
| May 12, 7:33 AM EDT | Flash Flood Warning | IND | Jackson, Jennings, Lawrence | 4 hr |
| May 12, 8:21 AM EDT | Flash Flood Warning | IND | Clay, Daviess, Greene, Knox, Martin, Owen and 1 more | 3 hr |
| May 12, 9:43 AM EDT | Flash Flood Warning | ILN | Dearborn, Ohio, Ripley, Switzerland | 3 hr |
| May 12, 9:44 AM EDT | Flash Flood Warning | IND | Bartholomew, Brown, Decatur, Jackson, Jennings, Monroe | 3 hr |
| May 13, 4:44 AM EDT | Flash Flood Warning | LOT | Porter | 5 hr |
| May 21, 4:44 PM EDT | Flash Flood Warning | IND | Daviess | 3 hr |
| May 21, 5:37 PM EDT | Flash Flood Warning | IND | Martin | 3 hr |
| May 21, 10:05 PM EDT | Flash Flood Warning | IWX | Allen, DeKalb, Steuben | 6 hr |
| May 27, 4:28 PM EDT | Flash Flood Warning | IND | Bartholomew, Johnson, Shelby | 3 hr |
| May 30, 8:14 PM EDT | Flash Flood Warning | IND | Vigo | 71 min |
| May 31, 4:41 PM EDT | Flash Flood Warning | IND | Carroll, Howard | 3 hr |
| Jun 3, 4:46 AM EDT | Flash Flood Warning | IND | Martin | 3 hr |
| Jun 5, 11:54 PM EDT | Flash Flood Warning | LOT | Newton | 3 hr |
| Jun 6, 1:33 AM EDT | Flash Flood Warning | LOT | Jasper | 117 min |
| Jun 11, 9:07 AM EDT | Flash Flood Warning | IWX | Whitley | 6 hr |
| Jun 12, 5:04 PM EDT | Flash Flood Warning | LOT | Benton | 6 hr |
| Jun 14, 9:09 PM EDT | Flash Flood Warning | ILN | Dearborn, Franklin, Ripley | 3 hr |
| Jun 14, 9:42 PM EDT | Flash Flood Warning | ILN | Dearborn, Fayette, Franklin, Ripley, Union, Wayne | 3 hr |
| Jun 14, 9:53 PM EDT | Flash Flood Warning | ILN | Ohio, Switzerland | 2 hr |
| Jun 15, 5:48 PM EDT | Flash Flood Warning | IND | Clay, Daviess, Greene, Knox, Parke, Sullivan and 2 more | 6 hr |
| Jun 15, 6:32 PM EDT | Flash Flood Warning | IND | Brown, Clay, Greene, Lawrence, Martin, Monroe and 3 more | 6 hr |
| Jun 15, 7:04 PM EDT | Flash Flood Warning | IND | Bartholomew, Brown, Hendricks, Jackson, Johnson, Lawrence and 3 more | 6 hr |
| Jun 15, 7:08 PM EDT | Flash Flood Warning | ILN | Dearborn, Ohio, Ripley, Switzerland | 112 min |
| Jun 15, 7:27 PM EDT | Flash Flood Warning | LOT | Lake | 6 hr |
| Jun 15, 7:41 PM EDT | Flash Flood Warning | IND | Decatur, Hancock, Jennings, Rush, Shelby | 6 hr |
| Jun 15, 7:44 PM EDT | Flash Flood Warning | LOT | Benton, Jasper, Lake, Newton, Porter | 4 hr |
| Jun 15, 8:34 PM EDT | Flash Flood Warning | IWX | White | 104 min |
| Jun 15, 8:36 PM EDT | Flash Flood Warning | ILN | Dearborn, Fayette, Franklin, Ripley, Union, Wayne | 4 hr |
| Jun 15, 8:50 PM EDT | Flash Flood Warning | ILN | Ohio, Switzerland | 4 hr |
| Jun 21, 6:17 AM EDT | Flash Flood Warning | IND | Madison, Tipton | 3 hr |
| Jun 21, 7:33 AM EDT | Flash Flood Warning | IND | Howard | 4 hr |
| Jun 21, 8:10 AM EDT | Flash Flood Warning | IWX | Grant | 5 hr |
| Jun 21, 8:21 AM EDT | Flash Flood Warning | IND | Delaware, Randolph | 3 hr |
| Jun 21, 8:57 AM EDT | Flash Flood Warning | LOT | Benton | 6 hr |
| Jun 21, 9:07 AM EDT | Flash Flood Warning | IWX | White | 4 hr |
| Jun 21, 9:09 AM EDT | Flash Flood Warning | IWX | Miami | 4 hr |
| Jun 21, 9:43 AM EDT | Flash Flood Warning | IWX | Cass | 3 hr |
| Jun 21, 5:52 PM EDT | Flash Flood Warning | IND | Greene, Monroe | 3 hr |
| Jun 21, 8:39 PM EDT | Flash Flood Warning | IND | Warren | 6 hr |
| Jun 21, 9:42 PM EDT | Flash Flood Warning | IND | Fountain, Tippecanoe | 5 hr |
| Jun 21, 10:44 PM EDT | Flash Flood Warning | IND | Fountain, Parke, Vermillion | 6 hr |
| Jun 21, 11:09 PM EDT | Flash Flood Warning | IND | Boone, Montgomery | 6 hr |
| Jun 21, 11:45 PM EDT | Flash Flood Warning | IND | Hendricks, Marion | 5 hr |
| Jun 22, 12:32 AM EDT | Flash Flood Warning | IWX | White | 9 hr |
| Jun 22, 12:35 AM EDT | Flash Flood Warning | IND | Hancock, Rush, Shelby | 6 hr |
| Jun 22, 12:42 AM EDT | Flash Flood Warning | IND | Johnson | 6 hr |
| Jun 22, 1:30 AM EDT | Flash Flood Warning | IND | Carroll, Howard | 6 hr |
| Jun 22, 1:58 AM EDT | Flash Flood Warning | IND | Tippecanoe, Warren | 6 hr |
| Jun 22, 2:14 AM EDT | Flash Flood Warning | IND | Delaware, Madison | 6 hr |
| Jun 22, 2:39 AM EDT | Flash Flood Warning | IND | Clinton, Tipton | 6 hr |
| Jun 22, 3:15 AM EDT | Flash Flood Warning | IND | Hamilton | 4 hr |
| Jun 22, 3:36 AM EDT | Flash Flood Warning | IND | Parke, Putnam | 6 hr |
| Jun 22, 4:45 AM EDT | Flash Flood Warning | IND | Hendricks, Johnson, Marion, Morgan, Putnam | 6 hr |
| Jun 22, 5:33 AM EDT | Flash Flood Warning | IND | Fountain, Parke, Vermillion | 4 hr |
| Jun 22, 5:47 AM EDT | Flash Flood Warning | IND | Hancock, Johnson, Morgan, Rush, Shelby | 6 hr |
| Jun 22, 5:52 AM EDT | Flash Flood Warning | LOT | Benton, Jasper, Newton | 6 hr |
| Jun 22, 6:21 AM EDT | Flash Flood Warning | IND | Carroll, Clinton, Howard, Tippecanoe, Tipton, Warren | 6 hr |
| Jun 22, 6:24 AM EDT | Flash Flood Warning | IND | Boone, Delaware, Hamilton, Madison | 6 hr |
| Jun 22, 6:29 AM EDT | Flash Flood Warning | IND | Boone, Delaware, Hamilton, Madison | 6 hr |
| Jun 22, 6:44 AM EDT | Flash Flood Warning | IND | Henry | 5 hr |
| Jun 22, 8:43 AM EDT | Flash Flood Warning | IND | Hendricks | 6 hr |
| Jun 22, 8:53 AM EDT | Flash Flood Warning | IND | Morgan | 6 hr |
| Jun 22, 9:08 AM EDT | Flash Flood Warning | IND | Hendricks | 3 hr |
| Jun 22, 11:50 AM EDT | Flash Flood Warning | LOT | Benton | 3 hr |
| Jun 23, 8:23 PM EDT | Flash Flood Warning | LOT | Lake, Porter | 2 hr |
| Jun 23, 9:36 PM EDT | Flash Flood Warning | IWX | LaGrange, Steuben | 6 hr |
| Jun 26, 8:09 PM EDT | Flash Flood Warning | IND | Sullivan | 2 hr |
| Jul 15, 3:28 PM EDT | Flash Flood Warning | LOT | Benton | 6 hr |
| Jul 17, 5:13 PM EDT | Flash Flood Warning | IND | Greene, Monroe, Owen | 4 hr |
| Jul 17, 5:57 PM EDT | Flash Flood Warning | ILN | Ripley | 3 hr |
| Jul 17, 6:45 PM EDT | Flash Flood Warning | ILN | Ripley | 3 hr |
| Jul 17, 8:59 PM EDT | Flash Flood Warning | IND | Greene | 6 hr |
| Jul 18, 1:39 AM EDT | Flash Flood Warning | IND | Greene, Sullivan | 5 hr |
| Jul 18, 1:47 AM EDT | Flash Flood Warning | IND | Daviess, Greene, Knox | 3 hr |
| Jul 24, 2:31 AM EDT | Flash Flood Warning | LOT | Lake, Porter | 6 hr |
| Jul 24, 8:08 AM EDT | Flash Flood Warning | IWX | LaPorte, Saint Joseph | 3 hr |
| Jul 24, 7:30 PM EDT | Flash Flood Warning | IWX | Adams, Allen, Cass, Fulton, Huntington, Miami and 2 more | 6 hr |
| Jul 24, 7:36 PM EDT | Flash Flood Warning | IWX | Cass, Fulton, Pulaski, White | 5 hr |
| Jul 24, 9:21 PM EDT | Flash Flood Warning | IWX | Pulaski, Starke | 4 hr |
| Aug 3, 6:12 AM EDT | Flash Flood Warning | LOT | Lake | 6 hr |
| Aug 3, 11:51 PM EDT | Flash Flood Warning | IWX | Cass, Miami, White | 117 min |
| Aug 11, 9:56 AM EDT | Flash Flood Warning | IWX | Blackford, Grant, Jay, Wells | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Greene County8
- Ripley County7
- Benton County6
- Dearborn County5
- Johnson County5
- Morgan County5
- Hendricks County5
- Lake County5
- White County5
- Daviess County4
- Martin County4
- Sullivan County4
- Ohio County4
- Switzerland County4
- Monroe County4
- Porter County4
- Shelby County4
- Howard County4
- Parke County4
- Putnam County4
- Madison County4
- Delaware County4
- Cass County4
- Jackson County3
- Jennings County3
- Lawrence County3
- Clay County3
- Knox County3
- Owen County3
- Bartholomew County3
- Brown County3
- Carroll County3
- Newton County3
- Jasper County3
- Franklin County3
- Vermillion County3
- Marion County3
- Hancock County3
- Rush County3
- Tipton County3
39 more counties
- Miami County3
- Warren County3
- Fountain County3
- Tippecanoe County3
- Boone County3
- Hamilton County3
- Crawford County2
- Perry County2
- Decatur County2
- Allen County2
- Steuben County2
- Vigo County2
- Fayette County2
- Union County2
- Wayne County2
- Grant County2
- Clinton County2
- Fulton County2
- Wells County2
- Pulaski County2
- Dubois County1
- Orange County1
- Harrison County1
- Clark County1
- Floyd County1
- DeKalb County1
- Whitley County1
- Randolph County1
- Montgomery County1
- Henry County1
- LaGrange County1
- LaPorte County1
- Saint Joseph County1
- Adams County1
- Huntington County1
- Wabash County1
- Starke County1
- Blackford County1
- Jay County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20092011
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.