Alert archive / South Dakota / Tornado Warnings / 2011
Tornado Warnings in South Dakota, May 2011
18 tornado warnings in May 2011. 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 tornado warnings reaches back to 1986.
Tornado Warnings by county
Each county as a circle sized by its count in May 2011. Tap one for its archive.
- Tornado Warnings
- 18
- Busiest day
- May 10, 20117 tornado warnings
Over time
By day
Days in UTC, the clock the archive keeps.
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 8, 8:08 PM CDT | Tornado Warning | ABR | Lyman | 14 min |
| May 8, 9:00 PM CDT | Tornado Warning | ABR | Lyman | 35 min |
| May 9, 9:04 PM CDT | Tornado Warning | UNR | Fall River | 56 min |
| May 9, 9:10 PM CDT | Tornado Warning | UNR | Haakon | 65 min |
| May 9, 10:01 PM CDT | Tornado Warning | UNR | 59 min | |
| May 9, 10:06 PM CDT | Tornado Warning | UNR | Haakon | 54 min |
| May 9, 10:48 PM CDT | Tornado Warning | UNR | Bennett | 42 min |
| May 9, 11:00 PM CDT | Tornado Warning | UNR | Haakon | 30 min |
| May 10, 12:16 AM CDT | Tornado Warning | UNR | Haakon, Pennington | 24 min |
| May 11, 6:13 PM CDT | Tornado Warning | FSD | Lincoln, Union | 32 min |
| May 30, 5:48 PM CDT | Tornado Warning | FSD | Bon Homme, Charles Mix | 42 min |
| May 30, 5:55 PM CDT | Tornado Warning | ABR | Buffalo, Hand, Hughes, Hyde, Lyman | 35 min |
| May 30, 6:26 PM CDT | Tornado Warning | FSD | Bon Homme, Charles Mix, Douglas, Hutchinson | 34 min |
| May 30, 6:33 PM CDT | Tornado Warning | FSD | Beadle | 27 min |
| May 30, 7:21 PM CDT | Tornado Warning | FSD | Douglas, Hutchinson | 24 min |
| May 30, 7:42 PM CDT | Tornado Warning | FSD | Hanson, Hutchinson, McCook | 33 min |
| May 30, 8:05 PM CDT | Tornado Warning | FSD | Lake, McCook, Minnehaha | 25 min |
| May 30, 8:09 PM CDT | Tornado Warning | FSD | Brookings, Kingsbury, Lake, Miner | 51 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Haakon County4
- Lyman County3
- Hutchinson County3
- Bon Homme County2
- Charles Mix County2
- Douglas County2
- McCook County2
- Lake County2
- Fall River County1
- Bennett County1
- Pennington County1
- Lincoln County1
- Union County1
- Buffalo County1
- Hand County1
- Hughes County1
- Hyde County1
- Beadle County1
- Hanson County1
- Minnehaha County1
- Brookings County1
- Kingsbury County1
- Miner County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.