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Home Return to list Severe Thunderstorm Warning 0268 Issued by the Davenport / Quad Cities Forecast Office
Action: New Issued At: 2026-08-12 08:21:12
110
WUUS53 KDVN 121320
SVRDVN
ILC067-071-109-187-IAC111-121415-
/O.NEW.KDVN.SV.W.0268.260812T1320Z-260812T1415Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Quad Cities IA/IL
820 AM CDT Wed Aug 12 2026
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...
Southern Warren County in west central Illinois...
McDonough County in west central Illinois...
Central Lee County in southeastern Iowa...
* Until 915 AM CDT.
* At 820 AM CDT, severe thunderstorms were located along a line
extending from near Montrose to Disco to near Smithshire, moving
east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Trained weather spotters. At 809 AM the Burlington
Airport measured a 58 mph wind gust.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Macomb, Fort Madison, Keokuk, Carthage, Nauvoo, Bushnell, Hamilton,
Colchester, La Harpe, Roseville, Dallas City, Montrose,
Stronghurst, Avon, Blandinsville, Good Hope, Prairie City, Carman,
Biggsville, and Terre Haute.
This also includes Argyle Lake State Park and Nauvoo State Park.
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 4051 9162 4074 9122 4071 9121 4071 9118
4072 9116 4070 9111 4079 9109 4088 9085
4071 9044 4046 9045 4032 9123
TIME...MOT...LOC 1320Z 291DEG 34KT 4051 9145 4062 9101 4082 9083
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Uttech
Action: Cancelled Issued At: 2026-08-12 08:58:13
932
WWUS53 KDVN 121357
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
857 AM CDT Wed Aug 12 2026
ILC071-187-121406-
/O.CAN.KDVN.SV.W.0268.000000T0000Z-260812T1415Z/
Henderson IL-Warren IL-
857 AM CDT Wed Aug 12 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN HENDERSON AND
SOUTHERN WARREN COUNTIES IS CANCELLED...
The storms which prompted the warning have weakened. Therefore, the
warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 100 PM CDT for
west central Illinois.
&&
LAT...LON 4045 9150 4061 9122 4063 9082 4040 9081
4032 9123
TIME...MOT...LOC 1356Z 292DEG 37KT 4033 9140 4041 9104 4059 9105
$$
ILC067-109-IAC111-121415-
/O.CON.KDVN.SV.W.0268.000000T0000Z-260812T1415Z/
Hancock IL-McDonough IL-Lee IA-
857 AM CDT Wed Aug 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 AM CDT
FOR CENTRAL HANCOCK...NORTHWESTERN MCDONOUGH AND SOUTH CENTRAL LEE
COUNTIES...
At 856 AM CDT, severe thunderstorms were located along a line
extending from Warsaw to near Webster to near Disco, moving east at
45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Trained weather spotters.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Keokuk, Carthage, Hamilton, La Harpe, Blandinsville, Ferris,
Tennessee, Colusa, Adrian, Burnside, Disco, Fountain Green, Elvaston,
Basco, Bentley, Keokuk Airport, Summitville, Mooar, Webster, and
Chatfield Park.
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 4045 9150 4061 9122 4063 9082 4040 9081
4032 9123
TIME...MOT...LOC 1356Z 292DEG 37KT 4033 9140 4041 9104 4059 9105
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Uttech
Action: Continued Issued At: 2026-08-12 08:58:13
932
WWUS53 KDVN 121357
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
857 AM CDT Wed Aug 12 2026
ILC071-187-121406-
/O.CAN.KDVN.SV.W.0268.000000T0000Z-260812T1415Z/
Henderson IL-Warren IL-
857 AM CDT Wed Aug 12 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN HENDERSON AND
SOUTHERN WARREN COUNTIES IS CANCELLED...
The storms which prompted the warning have weakened. Therefore, the
warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 100 PM CDT for
west central Illinois.
&&
LAT...LON 4045 9150 4061 9122 4063 9082 4040 9081
4032 9123
TIME...MOT...LOC 1356Z 292DEG 37KT 4033 9140 4041 9104 4059 9105
$$
ILC067-109-IAC111-121415-
/O.CON.KDVN.SV.W.0268.000000T0000Z-260812T1415Z/
Hancock IL-McDonough IL-Lee IA-
857 AM CDT Wed Aug 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 AM CDT
FOR CENTRAL HANCOCK...NORTHWESTERN MCDONOUGH AND SOUTH CENTRAL LEE
COUNTIES...
At 856 AM CDT, severe thunderstorms were located along a line
extending from Warsaw to near Webster to near Disco, moving east at
45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Trained weather spotters.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Keokuk, Carthage, Hamilton, La Harpe, Blandinsville, Ferris,
Tennessee, Colusa, Adrian, Burnside, Disco, Fountain Green, Elvaston,
Basco, Bentley, Keokuk Airport, Summitville, Mooar, Webster, and
Chatfield Park.
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 4045 9150 4061 9122 4063 9082 4040 9081
4032 9123
TIME...MOT...LOC 1356Z 292DEG 37KT 4033 9140 4041 9104 4059 9105
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Uttech
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