Alert archive / Iowa / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 21, NWS Sioux Falls, SD

April 22, 2022Dickinson County, Osceola County, Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at Apr 22, 2022, 5:41 AM CDT for Dickinson County, Osceola County, Iowa. It was in force for 22 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: Apr 22, 2022, 5:41 AM CDT (10:41 UTC)
Expired: Apr 22, 2022, 6:03 AM CDT
In force: 22 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Dickinson County, IA, Osceola County, IA

The radar

The Sioux Falls radar (KFSD), 108 km from the middle of the area, began a volume at 10:43 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
Apr 22, 5:50 AM CDT	HAIL 1.75	1 Se Harris, IA

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 10.7 hours before the alert went out and 220 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1576 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

549 
WUUS53 KFSD 221041
SVRFSD
IAC059-143-221115-
/O.NEW.KFSD.SV.W.0021.220422T1041Z-220422T1115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
541 AM CDT Fri Apr 22 2022

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
  Eastern Osceola County in northwestern Iowa...
  Northwestern Dickinson County in northwestern Iowa...

* Until 615 AM CDT.

* At 541 AM CDT, a severe thunderstorm was located 5 miles south of 
  Ocheyedan, or 11 miles east of Sibley, moving northeast at 45 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* This severe thunderstorm will be near...
  Harris around 550 AM CDT.
  Lake Park around 555 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows!

&&

LAT...LON 4326 9548 4335 9561 4350 9545 4350 9511
TIME...MOT...LOC 1041Z 224DEG 37KT 4337 9551 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

Chapman

2 follow-up statements

084 
WWUS53 KFSD 221057
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
557 AM CDT Fri Apr 22 2022

IAC143-221107-
/O.CAN.KFSD.SV.W.0021.000000T0000Z-220422T1115Z/
Osceola IA-
557 AM CDT Fri Apr 22 2022

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN OSCEOLA 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 4344 9528 4343 9535 4350 9539 4350 9518
TIME...MOT...LOC 1057Z 224DEG 37KT 4349 9535 

$$

IAC059-221115-
/O.CON.KFSD.SV.W.0021.000000T0000Z-220422T1115Z/
Dickinson IA-
557 AM CDT Fri Apr 22 2022

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 AM CDT
FOR NORTHWESTERN DICKINSON COUNTY...

At 557 AM CDT, a severe thunderstorm was located near Lake Park, or
12 miles west of Spirit Lake, 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
northwestern Dickinson County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

LAT...LON 4344 9528 4343 9535 4350 9539 4350 9518
TIME...MOT...LOC 1057Z 224DEG 37KT 4349 9535 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

Chapman

019 
WWUS53 KFSD 221103
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
603 AM CDT Fri Apr 22 2022

IAC059-221113-
/O.CAN.KFSD.SV.W.0021.000000T0000Z-220422T1115Z/
Dickinson IA-
603 AM CDT Fri Apr 22 2022

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN DICKINSON COUNTY
IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

LAT...LON 4344 9528 4343 9535 4350 9539 4350 9518
TIME...MOT...LOC 1102Z 224DEG 37KT 4354 9529 

$$

Chapman

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 22, 3:28 AM CDT	Wind Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	64 hr
Apr 22, 5:22 AM CDT	Severe Thunderstorm Warning	FSD	O'Brien, Osceola	23 min
Apr 22, 3:08 PM CDT	Fire Weather Watch	FSD	Lyon, Plymouth, Sioux, Woodbury	12 hr

Nearby

Severe Thunderstorm Warnings in Iowa, 2022 Every severe thunderstorm warning in 2022

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.