Mesoscale Discussions in South Dakota
4,227 mesoscale discussions since 1986. 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 mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Mesoscale Discussions
- 4,227
- Busiest year
- 2005262 mesoscale discussions
- Average year
- 176over 24 years on file
Over time
By year
Mesoscale discussions are counted from 2003.
By month of the year
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Pennington County898
- Custer County846
- Oglala Lakota County841
- Jackson County802
- Lawrence County796
- Bennett County787
- Meade County784
- Todd County781
- Mellette County776
- Fall River County768
- Jones County763
- Butte County758
- Haakon County756
- Lyman County753
- Tripp County739
- Stanley County733
- Union County728
- Brule County720
- Buffalo County716
- Lincoln County716
- Hughes County714
- Clay County711
- Turner County711
- Hyde County709
- Minnehaha County707
- Aurora County705
- Edmunds County705
- McCook County705
- Hutchinson County700
- Gregory County698
- Sully County696
- Douglas County692
- Hand County691
- Brown County689
- Jerauld County689
- Miner County688
- Charles Mix County687
- Hanson County686
- Yankton County680
- Davison County678
26 more counties
- Faulk County677
- Beadle County676
- Potter County676
- Lake County674
- Sanborn County674
- Walworth County672
- McPherson County669
- Perkins County666
- Spink County666
- Ziebach County662
- Dewey County660
- Day County659
- Marshall County656
- Campbell County649
- Moody County649
- Codington County648
- Bon Homme County646
- Kingsbury County646
- Roberts County645
- Clark County637
- Hamlin County637
- Grant County627
- Harding County624
- Brookings County622
- Deuel County618
- Corson County602
The latest mesoscale discussions
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 28, 2:40 PM CDT | Mesoscale Discussion | SPC | Butte, Corson, Custer, Dewey, Haakon, Harding and 5 more | 2 hr |
| Sep 11, 8:36 PM CDT | Mesoscale Discussion | SPC | Clay, Lincoln, Union, Yankton | 114 min |
| Sep 11, 3:51 PM CDT | Mesoscale Discussion | SPC | Brookings, Codington, Deuel, Grant, Hamlin, Kingsbury and 1 more | 54 min |
| Sep 7, 11:28 PM CDT | Mesoscale Discussion | SPC | Bon Homme, Charles Mix, Clay, Hutchinson, Lincoln, Turner and 2 more | 2 hr |
| Sep 7, 6:29 PM CDT | Mesoscale Discussion | SPC | Aurora, Bon Homme, Charles Mix, Davison, Douglas, Gregory and 7 more | 91 min |
| Sep 5, 3:34 PM CDT | Mesoscale Discussion | SPC | Bennett, Haakon, Jackson, Meade, Mellette, Oglala Lakota and 4 more | 116 min |
| Sep 5, 12:48 AM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Bon Homme, Brookings, Brown, Brule and 33 more | 117 min |
| Sep 2, 2:09 PM CDT | Mesoscale Discussion | SPC | Fall River | 2 hr |
| Sep 1, 9:11 PM CDT | Mesoscale Discussion | SPC | Clay, Lincoln, Turner, Union, Yankton | 2 hr |
| Sep 1, 6:26 PM CDT | Mesoscale Discussion | SPC | Bon Homme, Charles Mix, Clay, Douglas, Gregory, Hutchinson and 6 more | 2 hr |
| Sep 1, 3:17 PM CDT | Mesoscale Discussion | SPC | Aurora, Bon Homme, Brule, Charles Mix, Clay, Davison and 13 more | 118 min |
| Aug 30, 7:40 PM CDT | Mesoscale Discussion | SPC | Brown, Campbell, Edmunds, McPherson, Marshall, Walworth | 65 min |
Nearby
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.