Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 90, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 22, 2021, 4:10 PM CDT for Nobles County, Rock County, Minnesota. It was in force for 35 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
- Aug 22, 2021, 4:10 PM CDT (21:10 UTC)
- Expired
- Aug 22, 2021, 4:45 PM CDT
- In force
- 35 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Nobles County, MN, Rock County, MN
The radar
The Sioux Falls radar (KFSD), 54 km from the middle of the area, began a volume at 21:11 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 |
|---|---|---|---|
| Aug 22, 4:15 PM CDT | HAIL 1 | 6 Sse Luverne, MN |
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, 9.2 hours before the alert went out and 234 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
- 1388 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 261 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
489
WUUS53 KFSD 222110
SVRFSD
MNC105-133-222145-
/O.NEW.KFSD.SV.W.0090.210822T2110Z-210822T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
410 PM CDT Sun Aug 22 2021
The National Weather Service in Sioux Falls has issued a
* Severe Thunderstorm Warning for...
Southeastern Rock County in southwestern Minnesota...
Southwestern Nobles County in southwestern Minnesota...
* Until 445 PM CDT.
* At 409 PM CDT, a severe thunderstorm was located near Luverne,
moving northeast at 45 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* This severe thunderstorm will be near...
Ellsworth around 420 PM CDT.
Adrian around 430 PM CDT.
Lismore around 435 PM CDT.
Other locations impacted by this severe thunderstorm include
Magnolia, Kenneth and Steen.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4364 9585 4350 9605 4350 9633 4354 9635
4379 9605 4379 9594
TIME...MOT...LOC 2109Z 232DEG 41KT 4356 9621
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH
$$
Schumacher3 follow-up statements
479
WWUS53 KFSD 222121
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
421 PM CDT Sun Aug 22 2021
MNC105-133-222145-
/O.CON.KFSD.SV.W.0090.000000T0000Z-210822T2145Z/
Rock MN-Nobles MN-
421 PM CDT Sun Aug 22 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR SOUTHEASTERN ROCK AND WEST CENTRAL NOBLES COUNTIES...
At 420 PM CDT, a severe thunderstorm was located near Ellsworth, or 7
miles southeast of Luverne, moving northeast at 45 mph.
HAZARD...Half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
This severe storm will be near...
Magnolia around 425 PM CDT.
Adrian around 430 PM CDT.
Lismore around 435 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4364 9585 4353 9611 4355 9619 4357 9623
4377 9602 4379 9594
TIME...MOT...LOC 2120Z 238DEG 38KT 4361 9608
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH
$$
Schumacher669
WWUS53 KFSD 222137
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
437 PM CDT Sun Aug 22 2021
MNC133-222147-
/O.CAN.KFSD.SV.W.0090.000000T0000Z-210822T2145Z/
Rock MN-
437 PM CDT Sun Aug 22 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ROCK COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4358 9599 4362 9600 4366 9603 4372 9600
4374 9591 4364 9585
TIME...MOT...LOC 2137Z 239DEG 37KT 4369 9586
$$
MNC105-222145-
/O.CON.KFSD.SV.W.0090.000000T0000Z-210822T2145Z/
Nobles MN-
437 PM CDT Sun Aug 22 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR WEST CENTRAL NOBLES COUNTY...
At 437 PM CDT, a severe thunderstorm was located near Adrian, or 13
miles west of Worthington, moving northeast at 45 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
This severe thunderstorm will remain over mainly rural areas of west
central Nobles County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4358 9599 4362 9600 4366 9603 4372 9600
4374 9591 4364 9585
TIME...MOT...LOC 2137Z 239DEG 37KT 4369 9586
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH
$$
Schumacher466
WWUS53 KFSD 222141
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
441 PM CDT Sun Aug 22 2021
MNC105-222151-
/O.EXP.KFSD.SV.W.0090.000000T0000Z-210822T2145Z/
Nobles MN-
441 PM CDT Sun Aug 22 2021
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL NOBLES COUNTY
WILL EXPIRE AT 445 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However small hail
is still possible with this thunderstorm.
LAT...LON 4358 9599 4362 9600 4366 9603 4372 9600
4374 9591 4364 9585
TIME...MOT...LOC 2141Z 232DEG 41KT 4371 9583
$$
SchumacherNearby
Severe Thunderstorm Warnings in Minnesota, 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.