Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 2, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Jun 11, 2021, 2:33 PM CDT for Des Moines County, Iowa; Hancock County, Henderson County, Illinois. It was in force for 20 min. 7 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 11, 2021, 2:33 PM CDT (19:33 UTC)
- Expired
- Jun 11, 2021, 2:53 PM CDT
- In force
- 20 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Des Moines County, IA, Hancock County, IL, Henderson County, IL
The radar
The Quad Cities radar (KDVN), 109 km from the middle of the area, began a volume at 19:35 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 11, 2:33 PM CDT | TSTM WND DMG | Burlington, IA | CORRECTS TIME OF PREVIOUS TSTM WND DMG REPORT FROM BURLINGTON. LARGE GARAGE DOOR BLOWN IN AT A FACTORY. |
| Jun 11, 2:34 PM CDT | TSTM WND DMG | 1 Ese West Burlington, IA | PARTIAL WALL COLLAPSE AT A SMALL BUSINESS ON EAST AGENCY RD IN WEST BURLINGTON. |
| Jun 11, 2:37 PM CDT | TSTM WND DMG | 1 Wsw Burlington, IA | LARGE TREE LIMB DOWN AT NOTRE DAME HIGH SCHOOL. |
| Jun 11, 2:42 PM CDT | TSTM WND DMG | 2 Ese Burlington Region, IA | PART OF A TREE DOWN IN CRAPO PARK. |
| Jun 11, 2:42 PM CDT | HAIL 0.25 | Burlington, IA | |
| Jun 11, 2:43 PM CDT | TSTM WND DMG | Burlington, IA | LARGE TREE LIMB DOWN ON A HOUSE. |
| Jun 11, 2:48 PM CDT | TSTM WND DMG | Burlington, IA | LARGE GARAGE DOOR BLOWN IN AT A FACTORY. |
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, 7.6 hours before the alert went out and 113 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
- 1156 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 1370 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
179
WUUS53 KDVN 111933
SVRDVN
ILC067-071-IAC057-112015-
/O.NEW.KDVN.SV.W.0002.210611T1933Z-210611T2015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Quad Cities IA/IL
233 PM CDT Fri Jun 11 2021
The National Weather Service in the Quad Cities has issued a
* Severe Thunderstorm Warning for...
Northern Hancock County in west central Illinois...
Southern Henderson County in west central Illinois...
Southeastern Des Moines County in southeastern Iowa...
* Until 315 PM CDT.
* At 233 PM CDT, a severe thunderstorm was located over Burlington,
moving southeast at 15 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 thunderstorm will be near...
Gulf Port around 240 PM CDT.
Other locations in the path of this severe thunderstorm include
Carman, Stronghurst and Terre Haute.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
&&
LAT...LON 4067 9113 4067 9112 4070 9111 4070 9114
4071 9116 4072 9116 4072 9118 4071 9118
4078 9126 4092 9111 4079 9080 4058 9103
TIME...MOT...LOC 1933Z 308DEG 11KT 4081 9112
HAIL...1.00IN
WIND...60MPH
$$
Ervin3 follow-up statements
150
WWUS53 KDVN 111940
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
240 PM CDT Fri Jun 11 2021
ILC067-071-IAC057-112015-
/O.CON.KDVN.SV.W.0002.000000T0000Z-210611T2015Z/
Hancock IL-Henderson IL-Des Moines IA-
240 PM CDT Fri Jun 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR NORTHERN HANCOCK...SOUTHERN HENDERSON AND SOUTHEASTERN DES MOINES
COUNTIES...
At 240 PM CDT, a severe thunderstorm was located over Gulf Port, or
over Burlington, moving southeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Carman, Stronghurst and Terre Haute.
LAT...LON 4067 9113 4067 9112 4070 9111 4070 9114
4071 9116 4072 9116 4072 9118 4071 9118
4078 9126 4092 9111 4079 9080 4058 9103
TIME...MOT...LOC 1940Z 308DEG 11KT 4080 9110
HAIL...1.00IN
WIND...60MPH
$$
Ervin186
WWUS53 KDVN 111946
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
246 PM CDT Fri Jun 11 2021
ILC067-071-IAC057-112015-
/O.CON.KDVN.SV.W.0002.000000T0000Z-210611T2015Z/
Hancock IL-Henderson IL-Des Moines IA-
246 PM CDT Fri Jun 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR NORTHERN HANCOCK...SOUTHERN HENDERSON AND SOUTHEASTERN DES MOINES
COUNTIES...
At 246 PM CDT, a severe thunderstorm was located over Gulf Port, or
over Burlington, moving southeast at 15 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Trained weather spotters.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Burlington, West Burlington, Stronghurst, Carman, Terre Haute, Gulf
Port, Iowa Army Ammunition Plant, Disco, Lomax, Media, Lone Tree,
Carthage Lake, Shokokon, Spring Grove, Heapsville, Starr's Cave Park
and Preserve, Burlington Regional Airport, Henderson County
Fairgrounds, Olena and Des Moines County Fairgrounds.
LAT...LON 4067 9113 4067 9112 4070 9111 4070 9114
4071 9116 4072 9116 4072 9118 4071 9118
4078 9126 4092 9111 4079 9080 4058 9103
TIME...MOT...LOC 1946Z 308DEG 11KT 4079 9108
HAIL...0.75IN
WIND...60MPH
$$
Ervin927
WWUS53 KDVN 111953
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
253 PM CDT Fri Jun 11 2021
IAC057-ILC067-071-112003-
/O.CAN.KDVN.SV.W.0002.000000T0000Z-210611T2015Z/
Hancock IL-Henderson IL-Des Moines IA-
253 PM CDT Fri Jun 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN HANCOCK...SOUTHERN
HENDERSON AND SOUTHEASTERN DES MOINES COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
the Quad Cities.
LAT...LON 4067 9113 4067 9112 4070 9111 4070 9114
4071 9116 4072 9116 4072 9118 4071 9118
4078 9126 4092 9111 4079 9080 4058 9103
TIME...MOT...LOC 1952Z 308DEG 11KT 4078 9106
$$
ErvinThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 2:18 PM CDT | Special Weather Statement | DVN | Des Moines | 27 min |
| Jun 11, 2:26 PM CDT | Special Weather Statement | DVN | Rock Island | 34 min |
| Jun 11, 2:38 PM CDT | Special Weather Statement | DVN | Stephenson | 52 min |
| Jun 11, 4:19 PM CDT | Special Weather Statement | DVN | Whiteside | 41 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2021Severe 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.