Alert archive / South Dakota / Tornado Watches

Tornado Watches in South Dakota, 2011

20 tornado watches in 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 watches reaches back to 1997.

Tornado Watches by county

Each county as a circle sized by its count in 2011. Tap one for its archive.

Tornado Watches
20
Busiest month
July10 tornado watches
Busiest day
May 30, 20112 tornado watches

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.

IssuedProductOfficeCountiesLasted
Apr 9, 5:48 PM CDTTornado WatchSPCClay, Lincoln, Turner, Union, Yankton7 hr
May 8, 6:13 PM CDTTornado WatchSPCBon Homme, Brule, Buffalo, Campbell, Charles Mix, Corson and 13 more6 hr
May 30, 2:08 PM CDTTornado WatchSPCAurora, Beadle, Bon Homme, Brookings, Charles Mix, Clay and 16 more7 hr
May 30, 3:52 PM CDTTornado WatchSPCClark, Codington, Day, Deuel, Grant, Hamlin and 2 more7 hr
May 30, 8:43 PM CDTTornado WatchSPCBrookings, Clay, Codington, Deuel, Grant, Hamlin and 9 more5 hr
Jun 11, 4:59 PM CDTTornado WatchSPCBennett, Butte, Custer, Fall River, Haakon, Harding and 6 more7 hr
Jun 12, 2:49 PM CDTTornado WatchSPCButte, Custer, Fall River, Haakon, Harding, Jackson and 5 more6 hr
Jun 17, 5:34 PM CDTTornado WatchSPCCodington, Day, Deuel, Grant, Hamlin, Marshall and 1 more5 hr
Jun 20, 6:53 PM CDTTornado WatchSPCAurora, Bon Homme, Brule, Buffalo, Charles Mix, Clay and 13 more6 hr
Jul 2, 3:13 PM CDTTornado WatchSPCButte, Custer, Fall River, Harding, Lawrence, Meade and 2 more8 hr
Jul 8, 6:02 PM CDTTornado WatchSPCMarshall, Roberts7 hr
Jul 10, 2:29 PM CDTTornado WatchSPCBrown, Campbell, Clark, Codington, Corson, Day and 12 more7 hr
Jul 11, 5:06 PM CDTTornado WatchSPCBennett, Fall River5 hr
Jul 14, 5:33 PM CDTTornado WatchSPCCampbell, Corson, Dewey, Edmunds, Faulk, Harding and 5 more7 hr
Jul 22, 5:35 PM CDTTornado WatchSPCCampbell, Corson, Dewey, Edmunds, Harding, McPherson and 3 more8 hr
Jul 22, 6:14 PM CDTTornado WatchSPCBrown, Day, Grant, Marshall, Roberts8 hr
Jul 26, 5:21 PM CDTTornado WatchSPCBrown, Buffalo, Campbell, Corson, Dewey, Edmunds and 12 more5 hr
Jul 26, 7:32 PM CDTTornado WatchSPCClark, Codington, Day, Deuel, Grant, Hamlin and 2 more5 hr
Jul 31, 5:44 PM CDTTornado WatchSPCButte, Campbell, Corson, Dewey, Edmunds, Faulk and 7 more7 hr
Aug 11, 3:05 PM CDTTornado WatchSPCAurora, Beadle, Bennett, Bon Homme, Brule, Buffalo and 33 more5 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

25 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. May 30, 20112tornado watches
  2. July 22, 20112tornado watches
  3. April 9, 20111tornado watches
  4. May 8, 20111tornado watches
  5. May 31, 20111tornado watches
  6. June 11, 20111tornado watches
  7. June 12, 20111tornado watches
  8. June 17, 20111tornado watches
  9. June 20, 20111tornado watches
  10. July 2, 20111tornado watches
  11. July 8, 20111tornado watches
  12. July 10, 20111tornado watches

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.