Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 39, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 5, 2021, 6:15 PM CDT for McCook County, Minnehaha County, South Dakota. It was in force for 45 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 5, 2021, 6:15 PM CDT (23:15 UTC)
- Expired
- Jul 5, 2021, 7:00 PM CDT
- In force
- 45 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties McCook County, SD, Minnehaha County, SD
The radar
The Sioux Falls radar (KFSD), 34 km from the middle of the area, began a volume at 23:14 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 5, 6:22 PM CDT | TSTM WND GST 70 | 2 Se Montrose, SD |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 11.3 hours before the alert went out and 177 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
- 1844 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -42 m²/s²
- 0-3 km storm-relative helicity
- 14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
298 WUUS53 KFSD 052315 SVRFSD SDC087-099-060000- /O.NEW.KFSD.SV.W.0039.210705T2315Z-210706T0000Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Sioux Falls SD 615 PM CDT Mon Jul 5 2021 The National Weather Service in Sioux Falls has issued a * Severe Thunderstorm Warning for... Southwestern Minnehaha County in southeastern South Dakota... Southeastern McCook County in southeastern South Dakota... * Until 700 PM CDT. * At 614 PM CDT, a severe thunderstorm was located over Lake Vermillion State Recreation Area, moving east at 15 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * This severe thunderstorm will be near... Humboldt around 640 PM CDT. Wall Lake around 650 PM CDT. Hartford around 700 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4352 9726 4363 9731 4374 9700 4353 9692 TIME...MOT...LOC 2314Z 254DEG 15KT 4359 9720 HAIL...0.75IN WIND...60MPH $$ JM
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 3:24 AM CDT | Heat Advisory | FSD | Aurora, Bon Homme, Brule, Charles Mix, Clay, Davison and 10 more | 17 hr |
| Jul 5, 3:17 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 30 min |
| Jul 5, 5:00 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, Turner | 29 min |
| Jul 5, 6:37 PM CDT | Severe Thunderstorm Warning | FSD | Lake, Lincoln, Minnehaha, Turner | 38 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.