Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 4, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Apr 5, 2021, 8:44 PM CDT for Minnehaha County, South Dakota. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 5, 2021, 8:44 PM CDT (01:44 UTC)
- Expired
- Apr 5, 2021, 9:15 PM CDT
- In force
- 31 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Minnehaha County, SD
The radar
The Sioux Falls radar (KFSD), 11 km from the middle of the area, began a volume at 01:45 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.
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 1.7 hours before the alert went out and 202 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
- 3053 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- -70 m²/s²
- 0-3 km storm-relative helicity
- 246 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
961
WUUS53 KFSD 060144
SVRFSD
SDC099-060215-
/O.NEW.KFSD.SV.W.0004.210406T0144Z-210406T0215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
844 PM CDT Mon Apr 5 2021
The National Weather Service in Sioux Falls has issued a
* Severe Thunderstorm Warning for...
Southeastern Minnehaha County in southeastern South Dakota...
* Until 915 PM CDT.
* At 844 PM CDT, a severe thunderstorm was located over Sioux Falls,
moving northeast at 35 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* This severe thunderstorm will be near...
Rowena around 855 PM CDT.
Brandon around 900 PM CDT.
Palisades State Park around 905 PM CDT.
Garretson and Valley Springs around 910 PM CDT.
Sherman around 915 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4370 9645 4353 9646 4350 9669 4350 9681
4362 9688 4379 9647
TIME...MOT...LOC 0144Z 245DEG 30KT 4357 9674
HAIL...1.00IN
WIND...<50MPH
$$
SG2 follow-up statements
591
WWUS53 KFSD 060148
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
848 PM CDT Mon Apr 5 2021
SDC099-060215-
/O.CON.KFSD.SV.W.0004.000000T0000Z-210406T0215Z/
Minnehaha SD-
848 PM CDT Mon Apr 5 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR SOUTHEASTERN MINNEHAHA COUNTY...
At 846 PM CDT, a severe thunderstorm was located over Sioux Falls,
moving northeast at 35 mph.
HAZARD...Quarter size hail.
SOURCE...Trained weather spotters. Quarter sized hail was falling at
the National Weather Service office, 2 miles north of Sioux
Falls.
IMPACT...Damage to vehicles is expected.
This severe storm will be near...
Rowena around 855 PM CDT.
Brandon around 900 PM CDT.
Valley Springs and Palisades State Park around 905 PM CDT.
Garretson around 910 PM CDT.
Sherman around 915 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4370 9645 4353 9646 4350 9669 4350 9681
4362 9688 4379 9647
TIME...MOT...LOC 0146Z 245DEG 30KT 4358 9671
HAIL...1.00IN
WIND...<50MPH
$$
SG969
WWUS53 KFSD 060155
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
855 PM CDT Mon Apr 5 2021
SDC099-060215-
/O.CON.KFSD.SV.W.0004.000000T0000Z-210406T0215Z/
Minnehaha SD-
855 PM CDT Mon Apr 5 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR SOUTHEASTERN MINNEHAHA COUNTY...
At 855 PM CDT, a severe thunderstorm was located over Brandon, or 7
miles northeast of Sioux Falls, moving northeast at 35 mph.
HAZARD...Quarter size hail.
SOURCE...Trained weather spotters.
IMPACT...Damage to vehicles is expected.
This severe storm will be near...
Valley Springs and Palisades State Park around 905 PM CDT.
Garretson around 910 PM CDT.
Sherman around 915 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4370 9645 4353 9646 4353 9669 4368 9673
4379 9647
TIME...MOT...LOC 0155Z 245DEG 30KT 4361 9661
HAIL...1.00IN
WIND...<50MPH
$$
SGThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 7:03 PM CDT | Severe Thunderstorm Warning | FSD | McCook, Minnehaha | 27 min |
| Apr 5, 7:39 PM CDT | Severe Thunderstorm Warning | FSD | Moody | 36 min |
| Apr 5, 7:49 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, Turner | 26 min |
| Apr 5, 9:04 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha, Turner | 26 min |
| Apr 5, 9:27 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 33 min |
| Apr 5, 9:48 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 27 min |
| Apr 6, 9:39 AM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 10 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.