Alert archive / South Dakota / Flash Flood Warnings
Flash Flood Warnings in South Dakota, 1999
47 flash flood warnings in 1999. 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 1999. Tap one for its archive.
- Flash Flood Warnings
- 47
- Busiest month
- September17 flash flood warnings
- Busiest day
- September 3, 199911 flash flood warnings
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 7:34 PM CDT | Flash Flood Warning | ABR | Dewey | 3 hr |
| May 9, 9:16 PM CDT | Flash Flood Warning | ABR | Lyman | 6 hr |
| May 9, 9:56 PM CDT | Flash Flood Warning | UNR | Mellette, Todd | 4 hr |
| May 9, 11:11 PM CDT | Flash Flood Warning | UNR | Tripp | 4 hr |
| May 10, 2:23 AM CDT | Flash Flood Warning | UNR | Tripp | 6 hr |
| Jun 4, 8:22 PM CDT | Flash Flood Warning | UNR | 4 hr | |
| Jun 4, 9:40 PM CDT | Flash Flood Warning | UNR | Jackson | 4 hr |
| Jun 5, 9:00 PM CDT | Flash Flood Warning | UNR | Haakon, Jackson | 6 hr |
| Jun 5, 9:55 PM CDT | Flash Flood Warning | ABR | Buffalo | 4 hr |
| Jun 9, 12:40 AM CDT | Flash Flood Warning | FSD | Douglas, Hutchinson | 110 min |
| Jun 18, 4:53 PM CDT | Flash Flood Warning | UNR | Custer, Fall River | 4 hr |
| Jun 18, 6:28 PM CDT | Flash Flood Warning | UNR | Pennington | 4 hr |
| Jun 18, 9:50 PM CDT | Flash Flood Warning | UNR | Custer | 10 hr |
| Jun 22, 5:26 PM CDT | Flash Flood Warning | FSD | Gregory | 94 min |
| Jun 22, 5:49 PM CDT | Flash Flood Warning | FSD | Gregory | 46 min |
| Jun 22, 6:40 PM CDT | Flash Flood Warning | FSD | Gregory | 2 hr |
| Jun 29, 3:29 PM CDT | Flash Flood Warning | UNR | Custer | 4 hr |
| Jul 2, 9:27 AM CDT | Flash Flood Warning | FSD | Union | 2 hr |
| Jul 2, 11:32 AM CDT | Flash Flood Warning | FSD | Union | 58 min |
| Jul 8, 1:28 AM CDT | Flash Flood Warning | ABR | McPherson | 4 hr |
| Jul 18, 8:38 PM CDT | Flash Flood Warning | FSD | Brule, Charles Mix, Gregory | 2 hr |
| Jul 20, 1:26 AM CDT | Flash Flood Warning | FSD | Clay, Union | 4 hr |
| Jul 20, 1:26 AM CDT | Flash Flood Warning | FSD | Yankton | 4 hr |
| Jul 20, 1:48 AM CDT | Flash Flood Warning | FSD | Douglas | 4 hr |
| Jul 21, 1:35 AM CDT | Flash Flood Warning | FSD | Clay, Union | 3 hr |
| Jul 21, 4:34 AM CDT | Flash Flood Warning | FSD | Clay, Union | 86 min |
| Jul 22, 5:30 PM CDT | Flash Flood Warning | UNR | Mellette, Todd | 5 hr |
| Jul 22, 6:01 PM CDT | Flash Flood Warning | ABR | Sully | 2 hr |
| Jul 29, 7:16 PM CDT | Flash Flood Warning | ABR | Stanley | 3 hr |
| Aug 7, 1:19 PM CDT | Flash Flood Warning | UNR | Custer | 6 hr |
| Sep 2, 10:16 PM CDT | Flash Flood Warning | ABR | Potter, Sully | 6 hr |
| Sep 2, 10:16 PM CDT | Flash Flood Warning | ABR | Faulk | 6 hr |
| Sep 2, 11:01 PM CDT | Flash Flood Warning | ABR | Hughes, Jones, Stanley | 5 hr |
| Sep 2, 11:47 PM CDT | Flash Flood Warning | ABR | Brown, Edmunds | 5 hr |
| Sep 3, 1:09 AM CDT | Flash Flood Warning | ABR | Hyde | 3 hr |
| Sep 3, 4:01 AM CDT | Flash Flood Warning | ABR | Hughes, Jones, Stanley, Sully | 8 hr |
| Sep 3, 4:01 AM CDT | Flash Flood Warning | ABR | Brown, Edmunds, Faulk, Potter | 8 hr |
| Sep 3, 4:01 AM CDT | Flash Flood Warning | ABR | Hyde | 8 hr |
| Sep 3, 11:52 AM CDT | Flash Flood Warning | ABR | Sully | 3 hr |
| Sep 3, 2:44 PM CDT | Flash Flood Warning | ABR | Sully | 6 hr |
| Sep 3, 6:23 PM CDT | Flash Flood Warning | ABR | Deuel | 6 hr |
| Sep 3, 8:08 PM CDT | Flash Flood Warning | ABR | Codington, Grant | 8 hr |
| Sep 3, 8:08 PM CDT | Flash Flood Warning | ABR | Clark, Hamlin | 8 hr |
| Sep 4, 12:09 AM CDT | Flash Flood Warning | ABR | Deuel | 4 hr |
| Sep 4, 12:46 AM CDT | Flash Flood Warning | FSD | Charles Mix, Gregory | 3 hr |
| Sep 4, 12:46 AM CDT | Flash Flood Warning | FSD | Bon Homme | 3 hr |
| Sep 4, 12:46 AM CDT | Flash Flood Warning | FSD | Douglas | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Gregory County5
- Union County5
- Sully County5
- Custer County4
- Douglas County3
- Clay County3
- Stanley County3
- Mellette County2
- Todd County2
- Tripp County2
- Jackson County2
- Charles Mix County2
- Potter County2
- Faulk County2
- Hughes County2
- Jones County2
- Brown County2
- Edmunds County2
- Hyde County2
- Deuel County2
- Dewey County1
- Lyman County1
- Haakon County1
- Buffalo County1
- Hutchinson County1
- Fall River County1
- Pennington County1
- McPherson County1
- Brule County1
- Yankton County1
- Codington County1
- Grant County1
- Clark County1
- Hamlin County1
- Bon Homme County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19982000
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.