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Home Return to list Severe Thunderstorm Warning 0251 Issued by the Davenport / Quad Cities Forecast Office
Action: New Issued At: 2026-08-11 08:20:41
207
WUUS53 KDVN 111320
SVRDVN
ILC161-195-IAC045-163-111415-
/O.NEW.KDVN.SV.W.0251.260811T1320Z-260811T1415Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Quad Cities IA/IL
820 AM CDT Tue Aug 11 2026
The National Weather Service in the Quad Cities has issued a
* Severe Thunderstorm Warning for...
Northeastern Rock Island County in northwestern Illinois...
Southwestern Whiteside County in northwestern Illinois...
Northeastern Scott County in east central Iowa...
Southern Clinton County in east central Iowa...
* Until 915 AM CDT.
* At 819 AM CDT, severe thunderstorms were located along a line
extending from near Delmar to Welton to Walnut Grove Park, moving
southeast at 45 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated. This line of storms has a history of
producing wind damage across portions of eastern Iowa.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Locations impacted include...
Davenport, Bettendorf, Clinton, Eldridge, DeWitt, Camanche, Le
Claire, Hampton, Port Byron, Rapids City, Albany, Princeton, Long
Grove, Wheatland, Cordova, Grand Mound, Calamus, Donahue,
McCausland, and Low Moor.
This includes the following highways...
Interstate 74 in Iowa near mile marker 1.
Interstate 80 in Iowa between mile markers 289 and 306.
Interstate 80 in Illinois near mile marker 1.
Interstate 88 between mile markers 6 and 14.
Interstate 280 near mile marker 1.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
sturdy building.
This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across portions of eastern Iowa. SEEK SHELTER NOW inside
a sturdy structure and stay away from windows!
&&
LAT...LON 4194 9090 4193 9089 4188 9077 4189 9018
4177 9015 4158 9015 4158 9018 4157 9018
4155 9019 4159 9070
TIME...MOT...LOC 1319Z 321DEG 41KT 4206 9054 4192 9062 4191 9083
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
Uttech
Action: Continued Issued At: 2026-08-11 08:50:27
905
WWUS53 KDVN 111349
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
849 AM CDT Tue Aug 11 2026
ILC161-195-IAC045-163-111415-
/O.CON.KDVN.SV.W.0251.000000T0000Z-260811T1415Z/
Rock Island IL-Whiteside IL-Scott IA-Clinton IA-
849 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 AM CDT
FOR NORTHEASTERN ROCK ISLAND...SOUTHWESTERN WHITESIDE...NORTHEASTERN
SCOTT AND SOUTHEASTERN CLINTON COUNTIES...
At 849 AM CDT, severe thunderstorms were located along a line
extending from Camanche to near Port Byron to Campbells Island,
moving east at 50 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated. This line of storms has a history of
producing wind damage across portions of eastern Iowa.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Davenport, Bettendorf, Clinton, Eldridge, DeWitt, Camanche, Le
Claire, Hampton, Port Byron, Rapids City, Albany, Princeton, Long
Grove, Cordova, McCausland, Low Moor, East Clinton, Hillsdale,
Malone, and Folletts.
This includes the following highways...
Interstate 74 in Iowa near mile marker 1.
Interstate 80 in Iowa between mile markers 291 and 306.
Interstate 80 in Illinois near mile marker 1.
Interstate 88 between mile markers 6 and 14.
Interstate 280 near mile marker 1.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
sturdy building.
This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across portions of eastern Iowa. SEEK SHELTER NOW inside
a sturdy structure and stay away from windows.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4185 9058 4189 9018 4177 9015 4158 9015
4158 9018 4157 9018 4155 9019 4159 9068
TIME...MOT...LOC 1349Z 276DEG 44KT 4181 9027 4163 9026 4154 9044
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
Uttech
Action: Cancelled Issued At: 2026-08-11 09:04:13
286
WWUS53 KDVN 111403
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
903 AM CDT Tue Aug 11 2026
IAC045-163-ILC161-195-111413-
/O.CAN.KDVN.SV.W.0251.000000T0000Z-260811T1415Z/
Rock Island IL-Whiteside IL-Scott IA-Clinton IA-
903 AM CDT Tue Aug 11 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ROCK ISLAND...
SOUTHWESTERN WHITESIDE...NORTHEASTERN SCOTT AND SOUTHEASTERN CLINTON
COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled. Gusty winds are still
possible.
A Severe Thunderstorm Watch remains in effect until 200 PM CDT for
northwestern Illinois...and east central Iowa.
&&
LAT...LON 4185 9058 4189 9018 4177 9015 4158 9015
4158 9018 4157 9018 4155 9019 4159 9068
TIME...MOT...LOC 1401Z 321DEG 41KT 4170 9015 4152 9014 4143 9032
$$
Uttech
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