Alert archive / Iowa / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 24, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Jun 22, 2021, 5:27 PM CDT for 4 counties in Iowa. It was in force for 48 min. 3 reports 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, 5:27 PM CDT (22:27 UTC)
- Expired
- Jun 22, 2021, 6:15 PM CDT
- In force
- 48 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Benton County, IA, Buchanan County, IA, Delaware County, IA, Linn County, IA
The radar
The Quad Cities radar (KDVN), 119 km from the middle of the area, began a volume at 22:26 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, 5:39 PM CDT | TSTM WND DMG | 1 Ssw Walker, IA | DELAYED REPORT FROM DMX. DAMAGED/FLATTENED CORN HALF MILE TO ONE MILE SOUTH OF TOWN. LEAVES RIPPED OFF TREES WITH SMALL LIMBS DOWN. TIME ESTIMATED FROM RADAR. |
| Jun 22, 5:40 PM CDT | HAIL 1.75 | Walker, IA | |
| Jun 22, 5:59 PM CDT | HAIL 1 | Coggon, IA | ALSO WINDS ESTIMATED AT 55 MPH. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 10.5 hours before the alert went out and 124 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
- 2027 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- -11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
642 WUUS53 KDVN 222227 SVRDVN IAC011-019-055-113-222315- /O.NEW.KDVN.SV.W.0024.210622T2227Z-210622T2315Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Quad Cities IA/IL 527 PM CDT Tue Jun 22 2021 The National Weather Service in the Quad Cities has issued a * Severe Thunderstorm Warning for... Southern Buchanan County in northeastern Iowa... Northeastern Benton County in east central Iowa... Southwestern Delaware County in northeastern Iowa... Northern Linn County in east central Iowa... * Until 615 PM CDT. * At 526 PM CDT, a severe thunderstorm was located over Urbana, or 7 miles northeast of Vinton, moving east at 50 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * This severe thunderstorm will be near... Center Point and Walker around 535 PM CDT. Troy Mills around 540 PM CDT. Paris around 545 PM CDT. Other locations in the path of this severe thunderstorm include Central City, Coggon, Ryan and Prairieburg. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a sturdy building. Continuous cloud to ground lightning is occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4209 9203 4233 9205 4241 9136 4213 9137 TIME...MOT...LOC 2226Z 262DEG 44KT 4224 9193 HAIL...1.00IN WIND...<50MPH $$ McClure
7 follow-up statements
241 WWUS53 KDVN 222229 SVSDVN Severe Weather Statement National Weather Service Quad Cities IA/IL 529 PM CDT Tue Jun 22 2021 IAC011-019-055-113-222315- /O.CON.KDVN.SV.W.0024.000000T0000Z-210622T2315Z/ Buchanan IA-Benton IA-Delaware IA-Linn IA- 529 PM CDT Tue Jun 22 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR SOUTHERN BUCHANAN...NORTHEASTERN BENTON...SOUTHWESTERN DELAWARE AND NORTHERN LINN COUNTIES... At 529 PM CDT, a severe thunderstorm was located over Urbana, or 9 miles northeast of Vinton, moving east at 50 mph. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. This severe storm will be near... Walker around 535 PM CDT. Troy Mills around 540 PM CDT. Paris around 545 PM CDT. Other locations in the path of this severe thunderstorm include Central City, Coggon, Ryan and Prairieburg. PRECAUTIONARY/PREPAREDNESS ACTIONS... Continuous cloud to ground lightning is occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4209 9203 4233 9205 4241 9136 4213 9137 TIME...MOT...LOC 2229Z 262DEG 44KT 4225 9187 HAIL...1.25IN WIND...<50MPH $$ McClure
276 WWUS53 KDVN 222235 SVSDVN Severe Weather Statement National Weather Service Quad Cities IA/IL 535 PM CDT Tue Jun 22 2021 IAC011-019-055-113-222315- /O.CON.KDVN.SV.W.0024.000000T0000Z-210622T2315Z/ Buchanan IA-Benton IA-Delaware IA-Linn IA- 535 PM CDT Tue Jun 22 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR SOUTHEASTERN BUCHANAN...NORTHEASTERN BENTON...SOUTHWESTERN DELAWARE AND NORTHERN LINN COUNTIES... At 534 PM CDT, a severe thunderstorm was located near Urbana, or 11 miles northeast of Vinton, moving east at 35 mph. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. This severe storm will be near... Center Point and Walker around 540 PM CDT. Other locations in the path of this severe thunderstorm include Troy Mills, Paris, Central City, Coggon, Ryan and Prairieburg. 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. Continuous cloud to ground lightning is occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4210 9195 4233 9192 4241 9136 4213 9137 TIME...MOT...LOC 2234Z 263DEG 31KT 4226 9185 HAIL...1.25IN WIND...<50MPH $$ McClure
029
WWUS53 KDVN 222242
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
542 PM CDT Tue Jun 22 2021
IAC011-222252-
/O.CAN.KDVN.SV.W.0024.000000T0000Z-210622T2315Z/
Benton IA-
542 PM CDT Tue Jun 22 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BENTON COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4211 9183 4233 9183 4241 9136 4213 9137
TIME...MOT...LOC 2242Z 264DEG 40KT 4227 9174
$$
IAC019-055-113-222315-
/O.CON.KDVN.SV.W.0024.000000T0000Z-210622T2315Z/
Buchanan IA-Delaware IA-Linn IA-
542 PM CDT Tue Jun 22 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTHEASTERN BUCHANAN...SOUTHWESTERN DELAWARE AND NORTHERN LINN
COUNTIES...
At 542 PM CDT, a severe thunderstorm was located over Walker, or 15
miles southeast of Independence, moving east at 45 mph.
HAZARD...Half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
This severe storm will be near...
Troy Mills around 545 PM CDT.
Paris around 550 PM CDT.
Central City and Coggon around 555 PM CDT.
Other locations in the path of this severe thunderstorm include Ryan
and Prairieburg.
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.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
the Quad Cities.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4211 9183 4233 9183 4241 9136 4213 9137
TIME...MOT...LOC 2242Z 264DEG 40KT 4227 9174
HAIL...1.25IN
WIND...<50MPH
$$
McClure312 WWUS53 KDVN 222251 SVSDVN Severe Weather Statement National Weather Service Quad Cities IA/IL 551 PM CDT Tue Jun 22 2021 IAC019-055-113-222315- /O.CON.KDVN.SV.W.0024.000000T0000Z-210622T2315Z/ Buchanan IA-Delaware IA-Linn IA- 551 PM CDT Tue Jun 22 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR SOUTHEASTERN BUCHANAN...SOUTHWESTERN DELAWARE AND NORTHERN LINN COUNTIES... At 550 PM CDT, a severe thunderstorm was located near Troy Mills, or 16 miles southwest of Manchester, moving east at 45 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. This severe storm will be near... Central City around 555 PM CDT. Coggon and Ryan around 600 PM CDT. Other locations in the path of this severe thunderstorm include Prairieburg. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a sturdy building. To report severe weather contact your nearest law enforcement agency. They will send your report to the National Weather Service office in the Quad Cities. Continuous cloud to ground lightning is occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4211 9176 4233 9175 4241 9136 4213 9137 TIME...MOT...LOC 2250Z 263DEG 40KT 4228 9162 HAIL...1.00IN WIND...<50MPH $$ McClure
571
WWUS53 KDVN 222258
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
558 PM CDT Tue Jun 22 2021
IAC019-222307-
/O.CAN.KDVN.SV.W.0024.000000T0000Z-210622T2315Z/
Buchanan IA-
558 PM CDT Tue Jun 22 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BUCHANAN 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 4241 9136 4213 9137 4213 9166 4230 9161
4230 9160 4232 9160
TIME...MOT...LOC 2257Z 256DEG 34KT 4227 9154
$$
IAC055-113-222315-
/O.CON.KDVN.SV.W.0024.000000T0000Z-210622T2315Z/
Delaware IA-Linn IA-
558 PM CDT Tue Jun 22 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTHWESTERN DELAWARE AND NORTHEASTERN LINN COUNTIES...
At 557 PM CDT, a severe thunderstorm was located over Coggon, or 15
miles south of Manchester, moving east at 40 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
This severe storm will be near...
Prairieburg around 605 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
the Quad Cities.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4241 9136 4213 9137 4213 9166 4230 9161
4230 9160 4232 9160
TIME...MOT...LOC 2257Z 256DEG 34KT 4227 9154
HAIL...1.00IN
WIND...<50MPH
$$
McClure305
WWUS53 KDVN 222305
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
605 PM CDT Tue Jun 22 2021
IAC055-113-222315-
/O.CON.KDVN.SV.W.0024.000000T0000Z-210622T2315Z/
Delaware IA-Linn IA-
605 PM CDT Tue Jun 22 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTH CENTRAL DELAWARE AND NORTHEASTERN LINN COUNTIES...
At 605 PM CDT, a severe thunderstorm was located over Prairieburg, or
14 miles south of Manchester, moving east 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 south
central Delaware and northeastern Linn Counties, including the
following locations... Buffalo Creek Park, Pinicon Ridge Park, Howard
H Cherry Scout Reservation and Linn County Fairgrounds.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
the Quad Cities.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4241 9136 4213 9137 4214 9160 4227 9155
4232 9154
TIME...MOT...LOC 2305Z 262DEG 38KT 4228 9144
HAIL...1.00IN
WIND...<50MPH
$$
McClure069
WWUS53 KDVN 222313
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
613 PM CDT Tue Jun 22 2021
IAC055-113-222322-
/O.EXP.KDVN.SV.W.0024.000000T0000Z-210622T2315Z/
Delaware IA-Linn IA-
613 PM CDT Tue Jun 22 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL DELAWARE AND
NORTHEASTERN LINN COUNTIES WILL EXPIRE AT 615 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However small
hail, gusty winds to around 50 mph and heavy rain are still likely
with this thunderstorm.
LAT...LON 4241 9136 4213 9137 4214 9160 4227 9155
4232 9154
TIME...MOT...LOC 2312Z 262DEG 44KT 4228 9140
$$
McClureThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 5:11 PM CDT | Special Weather Statement | DVN | Benton | 34 min |
| Jun 22, 5:44 PM CDT | Special Weather Statement | DVN | Buchanan | 31 min |
| Jun 22, 6:16 PM CDT | Special Weather Statement | DVN | Jones | 29 min |
| Jun 22, 6:50 PM CDT | Special Weather Statement | DVN | Jefferson | 25 min |
| Jun 22, 6:57 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Keokuk | 33 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.