Weather alerts in South Dakota, 2011
1,719 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 1,719
- Warnings
- 1,159
- Watches
- 144
- Advisories
- 234
- Busiest month
- July448 alerts
- Busiest day
- June 26, 201158 alerts
Over time
By month
The alerts
1,719 alerts are too many to list on one page. Narrow it to a product above, to a month in the chart, or to a county.
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Pennington County268
- Meade County265
- Perkins County198
- Jackson County182
- Custer County181
- Harding County181
- Ziebach County176
- Corson County173
- Butte County172
- Haakon County166
- Stanley County165
- Dewey County163
- Todd County162
- Lawrence County161
- Brown County160
- Edmunds County159
- Roberts County156
- Hughes County156
- Mellette County155
- Lyman County152
- Bennett County149
- Potter County149
- Marshall County148
- Sully County147
- Walworth County147
- McPherson County147
- Minnehaha County145
- Campbell County142
- Day County136
- Faulk County136
- Spink County136
- Jones County134
- Codington County133
- Tripp County132
- Hyde County132
- Grant County131
- Fall River County127
- Moody County126
- Union County126
- Hand County122
26 more counties
- Buffalo County119
- Hamlin County113
- Clark County112
- Deuel County108
- Charles Mix County108
- Lincoln County104
- Beadle County104
- Brookings County101
- Clay County100
- Oglala Lakota County99
- Lake County98
- Brule County93
- Turner County92
- Kingsbury County91
- Miner County91
- Jerauld County90
- Aurora County89
- Gregory County89
- Hutchinson County88
- Douglas County88
- Bon Homme County87
- Yankton County87
- McCook County86
- Davison County84
- Sanborn County83
- Hanson County80
The busiest days
Days with the most alerts issued, by UTC date.
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. Rebuilt daily.