Alert archive / Iowa / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 31, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 22, 2021, 6:52 PM CDT for 4 counties in Iowa. It was in force for 24 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
- Jun 22, 2021, 6:52 PM CDT (23:52 UTC)
- Expired
- Jun 22, 2021, 7:16 PM CDT
- In force
- 24 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 60.0 mph
Counties Cherokee County, IA, Ida County, IA, Plymouth County, IA, Woodbury County, IA
The radar
The Omaha radar (KOAX), 134 km from the middle of the area, began a volume at 23:54 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 |
|---|---|---|---|
| Jun 22, 6:55 PM CDT | HAIL 1.25 | 4 N Correctionville, IA | PUBLIC REPORT OF HALF DOLLAR SIZE HAIL. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 11.9 hours before the alert went out and 134 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1910 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 259 m²/s²
- 0-3 km storm-relative helicity
- 324 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
765
WUUS53 KFSD 222352
SVRFSD
IAC035-093-149-193-230045-
/O.NEW.KFSD.SV.W.0031.210622T2352Z-210623T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
652 PM CDT Tue Jun 22 2021
The National Weather Service in Sioux Falls has issued a
* Severe Thunderstorm Warning for...
Southwestern Cherokee County in northwestern Iowa...
Eastern Woodbury County in west central Iowa...
Southeastern Plymouth County in northwestern Iowa...
Ida County in west central Iowa...
* Until 745 PM CDT.
* At 652 PM CDT, a severe thunderstorm was located near
Correctionville, or 21 miles northwest of Ida Grove, moving
southeast at 30 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
Correctionville and Anthon around 700 PM CDT.
Cushing around 705 PM CDT.
Ida Grove, Battle Creek and Danbury around 730 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This is a dangerous storm. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to shelter inside a strong building, and stay away from
windows.
&&
LAT...LON 4249 9596 4258 9592 4264 9581 4259 9568
4223 9532 4221 9533 4221 9582
TIME...MOT...LOC 2352Z 321DEG 26KT 4251 9583
HAIL...1.75IN
WIND...60MPH
$$
BP2 follow-up statements
544
WWUS53 KFSD 230007
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
707 PM CDT Tue Jun 22 2021
IAC035-149-230016-
/O.CAN.KFSD.SV.W.0031.000000T0000Z-210623T0045Z/
Cherokee IA-Plymouth IA-
707 PM CDT Tue Jun 22 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CHEROKEE AND
SOUTHEASTERN PLYMOUTH COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4249 9582 4256 9574 4256 9565 4223 9532
4221 9533 4221 9580
TIME...MOT...LOC 0006Z 319DEG 28KT 4242 9572
$$
IAC093-193-230045-
/O.CON.KFSD.SV.W.0031.000000T0000Z-210623T0045Z/
Woodbury IA-Ida IA-
707 PM CDT Tue Jun 22 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR EASTERN WOODBURY AND IDA COUNTIES...
At 706 PM CDT, a severe thunderstorm was located near Cushing, or 13
miles northwest of Ida Grove, moving southeast at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe storm will be near...
Battle Creek around 720 PM CDT.
Ida Grove around 725 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4249 9582 4256 9574 4256 9565 4223 9532
4221 9533 4221 9580
TIME...MOT...LOC 0006Z 319DEG 28KT 4242 9572
HAIL...1.00IN
WIND...60MPH
$$
BP484
WWUS53 KFSD 230016
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
716 PM CDT Tue Jun 22 2021
IAC093-193-230026-
/O.CAN.KFSD.SV.W.0031.000000T0000Z-210623T0045Z/
Woodbury IA-Ida IA-
716 PM CDT Tue Jun 22 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN WOODBURY AND IDA
COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However small hail is
still possible with this thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Sioux Falls.
LAT...LON 4249 9582 4256 9574 4256 9565 4223 9532
4221 9533 4221 9580
TIME...MOT...LOC 0015Z 321DEG 26KT 4236 9565
$$
BPThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 6:09 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 36 min |
| Jun 22, 6:24 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 36 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 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.