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Home Return to list Severe Thunderstorm Warning 0263 Issued by the Davenport / Quad Cities Forecast Office
Action: New Issued At: 2026-08-12 07:28:10
752
WUUS53 KDVN 121227
SVRDVN
ILC071-IAC057-087-111-121330-
/O.NEW.KDVN.SV.W.0263.260812T1227Z-260812T1330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Quad Cities IA/IL
727 AM CDT Wed Aug 12 2026
The National Weather Service in the Quad Cities has issued a
* Severe Thunderstorm Warning for...
Central Henderson County in west central Illinois...
Southeastern Henry County in southeastern Iowa...
Des Moines County in southeastern Iowa...
Northeastern Lee County in southeastern Iowa...
* Until 830 AM CDT.
* At 727 AM CDT, severe thunderstorms were located along a line
extending from near Mount Pleasant Municipal Arpt to near Pleasant
Grove, moving east 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.
* Locations impacted include...
Burlington, Oquawka, West Burlington, New London, Mediapolis,
Danville, Salem, Middletown, Gladstone, Rozetta, Gulf Port, Iowa
Army Ammunition Plant, Lowell, Denmark, Kossuth, Geode State Park,
Welter Recreation Area, Shokokon, Spring Grove, and Kingston.
This also includes Delabar State Park and Henderson County
Conservation Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
&&
LAT...LON 4085 9168 4106 9125 4094 9079 4090 9079
4066 9123
TIME...MOT...LOC 1227Z 288DEG 28KT 4088 9152 4099 9124
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Uttech
Action: Continued Issued At: 2026-08-12 07:30:41
933
WWUS53 KDVN 121230
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
730 AM CDT Wed Aug 12 2026
ILC071-IAC057-087-111-121330-
/O.CON.KDVN.SV.W.0263.000000T0000Z-260812T1330Z/
Henderson IL-Henry IA-Des Moines IA-Lee IA-
730 AM CDT Wed Aug 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CDT
FOR CENTRAL HENDERSON...SOUTHEASTERN HENRY...DES MOINES AND
NORTHEASTERN LEE COUNTIES...
At 730 AM CDT, severe thunderstorms were located along a line
extending from near Stephenson Park to near Big Hollow Recreation
Area, moving east at 30 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Burlington, Oquawka, West Burlington, New London, Mediapolis,
Danville, Salem, Middletown, Gladstone, Rozetta, Gulf Port, Iowa Army
Ammunition Plant, Lowell, Denmark, Kossuth, Geode State Park, Welter
Recreation Area, Shokokon, Spring Grove, and Kingston.
This also includes Delabar State Park and Henderson County
Conservation Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
&&
LAT...LON 4085 9168 4106 9125 4094 9079 4090 9079
4066 9123
TIME...MOT...LOC 1230Z 288DEG 28KT 4088 9150 4099 9122
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Uttech
Action: Continued Issued At: 2026-08-12 07:36:11
005
WWUS53 KDVN 121235
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
735 AM CDT Wed Aug 12 2026
ILC071-IAC057-087-111-121330-
/O.CON.KDVN.SV.W.0263.000000T0000Z-260812T1330Z/
Henderson IL-Henry IA-Des Moines IA-Lee IA-
735 AM CDT Wed Aug 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CDT
FOR CENTRAL HENDERSON...SOUTHEASTERN HENRY...DES MOINES AND
NORTHEASTERN LEE COUNTIES...
At 735 AM CDT, severe thunderstorms were located along a line
extending from Stephenson Park to Sperry, 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.
Locations impacted include...
Burlington, Oquawka, West Burlington, New London, Mediapolis,
Danville, Salem, Middletown, Gladstone, Rozetta, Gulf Port, Iowa Army
Ammunition Plant, Lowell, Denmark, Kossuth, Geode State Park, Welter
Recreation Area, Shokokon, Spring Grove, and Kingston.
This also includes Delabar State Park and Henderson County
Conservation Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4085 9168 4106 9125 4094 9079 4090 9079
4066 9123
TIME...MOT...LOC 1235Z 313DEG 27KT 4084 9145 4095 9112
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Uttech
Action: Continued Issued At: 2026-08-12 07:41:11
071
WWUS53 KDVN 121241
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
741 AM CDT Wed Aug 12 2026
ILC071-IAC057-087-111-121330-
/O.CON.KDVN.SV.W.0263.000000T0000Z-260812T1330Z/
Henderson IL-Henry IA-Des Moines IA-Lee IA-
741 AM CDT Wed Aug 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CDT
FOR CENTRAL HENDERSON...SOUTHEASTERN HENRY...DES MOINES AND
NORTHEASTERN LEE COUNTIES...
At 740 AM CDT, severe thunderstorms were located along a line
extending from Lowell to near Sperry, moving east at 30 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Trained weather spotters. Downed branches reported in New
London.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Burlington, Oquawka, West Burlington, New London, Mediapolis,
Danville, Middletown, Gladstone, Rozetta, Gulf Port, Iowa Army
Ammunition Plant, Lowell, Denmark, Kossuth, Geode State Park, Welter
Recreation Area, Shokokon, Spring Grove, Kingston, and Wever.
This also includes Delabar State Park and Henderson County
Conservation Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4083 9164 4103 9113 4094 9079 4090 9079
4066 9123
TIME...MOT...LOC 1240Z 288DEG 28KT 4083 9141 4094 9108
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...60 MPH
$$
Uttech
Action: Continued Issued At: 2026-08-12 07:44:11
239
WWUS53 KDVN 121243
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
743 AM CDT Wed Aug 12 2026
ILC071-IAC057-087-111-121330-
/O.CON.KDVN.SV.W.0263.000000T0000Z-260812T1330Z/
Henderson IL-Henry IA-Des Moines IA-Lee IA-
743 AM CDT Wed Aug 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CDT
FOR CENTRAL HENDERSON...SOUTHEASTERN HENRY...DES MOINES AND
NORTHEASTERN LEE COUNTIES...
At 743 AM CDT, severe thunderstorms were located along a line
extending from Geode State Park to near Sperry, moving southeast at
30 mph.
HAZARD...Golf ball size hail and 70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
Locations impacted include...
Burlington, Oquawka, West Burlington, New London, Mediapolis,
Danville, Middletown, Gladstone, Rozetta, Gulf Port, Iowa Army
Ammunition Plant, Lowell, Denmark, Kossuth, Geode State Park, Welter
Recreation Area, Shokokon, Spring Grove, Kingston, and Wever.
This also includes Delabar State Park and Henderson County
Conservation Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4083 9164 4103 9113 4094 9079 4090 9079
4066 9123
TIME...MOT...LOC 1243Z 324DEG 26KT 4082 9140 4093 9107
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Uttech
Action: Continued Issued At: 2026-08-12 08:02:42
672
WWUS53 KDVN 121302
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
802 AM CDT Wed Aug 12 2026
IAC087-121312-
/O.CAN.KDVN.SV.W.0263.000000T0000Z-260812T1330Z/
Henry IA-
802 AM CDT Wed Aug 12 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HENRY COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 100 PM CDT for
west central Illinois...and southeastern Iowa.
&&
LAT...LON 4077 9150 4081 9140 4081 9137 4082 9137
4099 9097 4094 9079 4090 9079 4066 9123
TIME...MOT...LOC 1302Z 308DEG 35KT 4073 9120 4088 9090
$$
ILC071-IAC057-111-121330-
/O.CON.KDVN.SV.W.0263.000000T0000Z-260812T1330Z/
Henderson IL-Des Moines IA-Lee IA-
802 AM CDT Wed Aug 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CDT
FOR CENTRAL HENDERSON...SOUTHERN DES MOINES AND NORTHEASTERN LEE
COUNTIES...
At 802 AM CDT, severe thunderstorms were located along a line
extending from Wever to near Biggsville, moving southeast at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Trained weather spotters.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Burlington, Oquawka, West Burlington, Middletown, Gladstone, Rozetta,
Gulf Port, Iowa Army Ammunition Plant, Denmark, Augusta, Lone Tree,
Carthage Lake, Welter Recreation Area, Shokokon, Spring Grove,
Heapsville, Wever, Starrs Cave Park and Preserve, Burlington
Regional Airport, and Beaverdale.
This also includes Delabar State Park and Henderson County
Conservation Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4077 9150 4081 9140 4081 9137 4082 9137
4099 9097 4094 9079 4090 9079 4066 9123
TIME...MOT...LOC 1302Z 308DEG 35KT 4073 9120 4088 9090
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...60 MPH
$$
Uttech
Action: Cancelled Issued At: 2026-08-12 08:02:42
672
WWUS53 KDVN 121302
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
802 AM CDT Wed Aug 12 2026
IAC087-121312-
/O.CAN.KDVN.SV.W.0263.000000T0000Z-260812T1330Z/
Henry IA-
802 AM CDT Wed Aug 12 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HENRY COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 100 PM CDT for
west central Illinois...and southeastern Iowa.
&&
LAT...LON 4077 9150 4081 9140 4081 9137 4082 9137
4099 9097 4094 9079 4090 9079 4066 9123
TIME...MOT...LOC 1302Z 308DEG 35KT 4073 9120 4088 9090
$$
ILC071-IAC057-111-121330-
/O.CON.KDVN.SV.W.0263.000000T0000Z-260812T1330Z/
Henderson IL-Des Moines IA-Lee IA-
802 AM CDT Wed Aug 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CDT
FOR CENTRAL HENDERSON...SOUTHERN DES MOINES AND NORTHEASTERN LEE
COUNTIES...
At 802 AM CDT, severe thunderstorms were located along a line
extending from Wever to near Biggsville, moving southeast at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Trained weather spotters.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Burlington, Oquawka, West Burlington, Middletown, Gladstone, Rozetta,
Gulf Port, Iowa Army Ammunition Plant, Denmark, Augusta, Lone Tree,
Carthage Lake, Welter Recreation Area, Shokokon, Spring Grove,
Heapsville, Wever, Starrs Cave Park and Preserve, Burlington
Regional Airport, and Beaverdale.
This also includes Delabar State Park and Henderson County
Conservation Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4077 9150 4081 9140 4081 9137 4082 9137
4099 9097 4094 9079 4090 9079 4066 9123
TIME...MOT...LOC 1302Z 308DEG 35KT 4073 9120 4088 9090
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...60 MPH
$$
Uttech
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