News DetailPotential tornado event in South Dakota
Posted At: August 11, 2006 @ 6:39 PM
Posted By: Reed Timmer
Related Categories: Tornadoes
Conditions appear to be coming together for a mini tornado outbreak in eastern South Dakota tomorrow (Saturday) afternoon and evening. Substantial instability, an unseasonably strong low-level jet, insane moisture, and a potent mid-level jet streak will set the stage for explosive supercell development after 4 pm in central to eastern SD. The presence of any outflow boundaries from overnight storms will also enhance the threat for tornadoes. I left Norman at 6 pm this evening for a target in eastern South Dakota, once again without Joel (who is very close to having his profile removed from this site due to lack of stormchasing passion). For those interested, the WRF forecast 0-1 and 0-3 km helicity, CAPE, CIN, and 500 mb wind for tomorrow afternoon/evening are displayed below. The 0-1 km helicity values of 150-200 are sufficient for large tornadoes, especially with the presence of outflow boundaries. Tomorrow could be the apocalypse.
Stay tuned to the StormWatch player (upper right) for videotaped updates on our progress throughout the chase.
| 0-1 km Helicity |
0-3 km Helicity |
850 mb Wind |
![]() |
![]() |
![]() |
| CAPE |
CIN |
500 mb Wind |
![]() |
![]() |
![]() |
Stay tuned to the StormWatch player (upper right) for videotaped updates on our progress throughout the chase.






Calendar
Categories







Reed needs to head north or west to see anything worth while on Saturday. There will be too much cin in eastern South Dakota.
Personally I think meteorologically apocolypitc episodes appear possible today in SD. Goodluck to the storm gang.
Concentrate
Storms went up yesterday in shit midlevel flow. An extra 10 knots isn't going to hurt today. Good luck guys.
I saw your video and maps - all are working!!!
Concentrate
Just a quick question from a newbie chaser. How much did the gas up to South Dakota from Norman, OK cost you?