Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 193, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Sep 21, 1986, 12:34 AM CDT for Lyon County, Minnesota. It was in force for 56 min.
The area
The counties it named.
The facts
- Issued
- Sep 21, 1986, 12:34 AM CDT (05:34 UTC)
- Expired
- Sep 21, 1986, 1:30 AM CDT
- In force
- 56 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Lyon County, MN
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Minneapolis, MN (KSTC), launched 00:00Z, 5.6 hours before the alert went out and 184 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 531 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 176 m²/s²
- 0-3 km storm-relative helicity
- 228 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 11:07 PM CDT | Severe Thunderstorm Warning | FSD | Gregory | 68 min |
| Sep 20, 11:35 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Charles Mix | 35 min |
| Sep 20, 11:55 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Douglas | 65 min |
| Sep 21, 12:32 AM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Hutchinson | 58 min |
| Sep 21, 1:19 AM CDT | Severe Thunderstorm Warning | FSD | McCook, Minnehaha | 56 min |
| Sep 21, 1:19 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 56 min |
| Sep 21, 1:46 AM CDT | Severe Thunderstorm Warning | FSD | Lake, Moody | 59 min |
| Sep 21, 2:22 AM CDT | Severe Thunderstorm Warning | FSD | Minnehaha, Moody | 53 min |
| Sep 20, 11:14 PM CDT | Severe Thunderstorm Warning | FSD | Murray | 61 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1986Every severe thunderstorm warning in 1986
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.