Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 57, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Jul 14, 2021, 11:10 PM CDT for Carroll County, Jo Daviess County, Illinois; Clinton County, Jackson County, Iowa. It was in force for 50 min. 1 report 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
- Jul 14, 2021, 11:10 PM CDT (04:10 UTC)
- Expired
- Jul 15, 2021, 12:00 AM CDT
- In force
- 50 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Clinton County, IA, Jackson County, IA, Carroll County, IL, Jo Daviess County, IL
The radar
The Quad Cities radar (KDVN), 66 km from the middle of the area, began a volume at 04:11 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 |
|---|---|---|---|
| Jul 14, 11:15 PM CDT | TSTM WND GST 60 | Springbrook, IA | LAW ENFORCEMENT RELAYING A PUBLIC REPORT OF 60 MPH WINDS NEAR SPRINGBROOK. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 14, 6:13 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 4.2 hours before the alert went out and 63 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
- 2569 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 832 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 253 m²/s²
- 0-3 km storm-relative helicity
- 346 m²/s²
- Significant tornado parameter
- 3.2
- Supercell composite
- 23.4
The text
As transmitted.
246
WUUS53 KDVN 150410
SVRDVN
ILC015-085-IAC045-097-150500-
/O.NEW.KDVN.SV.W.0057.210715T0410Z-210715T0500Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Quad Cities IA/IL
1110 PM CDT Wed Jul 14 2021
The National Weather Service in the Quad Cities has issued a
* Severe Thunderstorm Warning for...
Southeastern Jo Daviess County in northwestern Illinois...
Northwestern Carroll County in northwestern Illinois...
Eastern Jackson County in east central Iowa...
Northeastern Clinton County in east central Iowa...
* Until midnight CDT.
* At 1110 PM CDT, severe thunderstorms were located along a line
extending from near Bellevue to near Springbrook to near Nashville,
moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Bellevue and Spragueville around 1115 PM CDT.
Preston, Hanover and Elizabeth around 1120 PM CDT.
Green Island around 1125 PM CDT.
Miles and Massbach around 1130 PM CDT.
Other locations in the path of these severe thunderstorms include
Charlotte, Savanna and Sabula.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until midnight CDT for northwestern
Illinois...and east central Iowa.
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. 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 these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4233 8999 4204 9012 4194 9045 4207 9077
4214 9057 4237 9047
TIME...MOT...LOC 0410Z 284DEG 30KT 4230 9036 4212 9050 4203 9075
HAIL...<.75IN
WIND...60MPH
$$
Gibbs3 follow-up statements
155 WWUS53 KDVN 150428 SVSDVN Severe Weather Statement National Weather Service Quad Cities IA/IL 1128 PM CDT Wed Jul 14 2021 IAC045-150438- /O.CAN.KDVN.SV.W.0057.000000T0000Z-210715T0500Z/ Clinton IA- 1128 PM CDT Wed Jul 14 2021 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CLINTON COUNTY IS CANCELLED... The storms which prompted the warning have moved out of the warned area. Therefore, the warning has been cancelled. A Tornado Watch remains in effect until midnight CDT for northwestern Illinois...and east central Iowa. LAT...LON 4233 8999 4204 9012 4204 9041 4229 9041 TIME...MOT...LOC 0428Z 262DEG 41KT 4231 9026 4217 9021 4207 9031 $$ ILC015-085-IAC097-150500- /O.CON.KDVN.SV.W.0057.000000T0000Z-210715T0500Z/ Jo Daviess IL-Carroll IL-Jackson IA- 1128 PM CDT Wed Jul 14 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR SOUTHEASTERN JO DAVIESS...NORTHWESTERN CARROLL AND SOUTHEASTERN JACKSON COUNTIES... At 1128 PM CDT, severe thunderstorms were located along a line extending from Elizabeth to 6 miles east of Green Island to Miles, moving east at 50 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Massbach. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until midnight CDT for northwestern Illinois...and east central Iowa. For your protection move to an interior room on the lowest floor of a sturdy building. Continuous cloud to ground lightning is occurring with these storms. 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 these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4233 8999 4204 9012 4204 9041 4229 9041 TIME...MOT...LOC 0428Z 262DEG 41KT 4231 9026 4217 9021 4207 9031 HAIL...<.75IN WIND...60MPH $$ Gibbs
556 WWUS53 KDVN 150435 SVSDVN Severe Weather Statement National Weather Service Quad Cities IA/IL 1135 PM CDT Wed Jul 14 2021 ILC015-085-IAC097-150500- /O.CON.KDVN.SV.W.0057.000000T0000Z-210715T0500Z/ Jo Daviess IL-Carroll IL-Jackson IA- 1135 PM CDT Wed Jul 14 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR SOUTHEASTERN JO DAVIESS...NORTHWESTERN CARROLL AND SOUTHEASTERN JACKSON COUNTIES... At 1135 PM CDT, severe thunderstorms were located along a line extending from Elizabeth to near Savanna to near Miles, moving east at 35 mph. HAZARD...60 mph wind gusts. SOURCE...Law enforcement. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Savanna, Preston, Hanover, Sabula, Miles, Green Island, Massbach, Van Buren, Mississippi Palisades State Park, Blanding Landing, Whitton, North Hanover, Blanding, Reeceville, South Sabula Lake Park, Elmoville, Camp Far Horizons and Stockton Airport. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until midnight CDT for northwestern Illinois...and east central Iowa. For your protection move to an interior room on the lowest floor of a sturdy building. Continuous cloud to ground lightning is occurring with these storms. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is occurring with these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4233 8999 4204 9012 4204 9041 4229 9041 TIME...MOT...LOC 0435Z 284DEG 30KT 4230 9020 4216 9015 4206 9025 HAIL...<.75IN WIND...60MPH $$ Gibbs
904
WWUS53 KDVN 150442
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
1142 PM CDT Wed Jul 14 2021
IAC097-150452-
/O.CAN.KDVN.SV.W.0057.000000T0000Z-210715T0500Z/
Jackson IA-
1142 PM CDT Wed Jul 14 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN JACKSON COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until midnight CDT for northwestern
Illinois...and east central Iowa.
LAT...LON 4204 9012 4204 9016 4206 9017 4212 9016
4213 9017 4213 9020 4216 9022 4217 9027
4231 9022 4233 8999
TIME...MOT...LOC 0442Z 284DEG 30KT 4229 9013 4215 9008 4205 9018
$$
ILC015-085-150500-
/O.CON.KDVN.SV.W.0057.000000T0000Z-210715T0500Z/
Jo Daviess IL-Carroll IL-
1142 PM CDT Wed Jul 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FOR SOUTHEASTERN JO DAVIESS AND NORTHWESTERN CARROLL COUNTIES...
At 1142 PM CDT, severe thunderstorms were located along a line
extending from near Massbach to near Savanna to Sabula, moving east
at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Law enforcement.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Savanna, Sabula, Massbach, Mississippi Palisades State Park,
Elmoville, Camp Far Horizons and Stockton Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until midnight CDT for northwestern
Illinois...and east central Iowa.
For your protection move to an interior room on the lowest floor of a
sturdy building.
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4204 9012 4204 9016 4206 9017 4212 9016
4213 9017 4213 9020 4216 9022 4217 9027
4231 9022 4233 8999
TIME...MOT...LOC 0442Z 284DEG 30KT 4229 9013 4215 9008 4205 9018
HAIL...<.75IN
WIND...60MPH
$$
GibbsThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 11:41 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Stephenson | 34 min |
| Jul 15, 12:05 AM CDT | Severe Thunderstorm Warning | DVN | Stephenson | 25 min |
| Jul 15, 12:07 AM CDT | Severe Thunderstorm Warning | DVN | Carroll, Whiteside | 23 min |
| Jul 15, 1:01 AM CDT | Special Weather Statement | DVN | Rock Island | 89 min |
| Jul 15, 1:51 PM CDT | Special Weather Statement | DVN | McDonough | 39 min |
| Jul 15, 2:31 PM CDT | Special Weather Statement | DVN | McDonough | 29 min |
| Jul 15, 5:23 PM CDT | Special Weather Statement | DVN | Whiteside | 37 min |
| Jul 14, 7:28 PM CDT | Tornado Warning | DVN | Buchanan, Delaware | 17 min |
| Jul 14, 7:37 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Linn | 38 min |
| Jul 14, 7:40 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware | 35 min |
| Jul 14, 7:43 PM CDT | Tornado Warning | DVN | Benton | 32 min |
| Jul 14, 7:43 PM CDT | Tornado Warning | DVN | Buchanan, Delaware | 32 min |
| Jul 14, 7:53 PM CDT | Tornado Warning | DVN | Benton | 27 min |
| Jul 14, 8:11 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque | 19 min |
| Jul 14, 8:14 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Linn | 46 min |
| Jul 14, 8:19 PM CDT | Tornado Warning | DVN | Benton, Linn | 22 min |
| Jul 14, 8:31 PM CDT | Tornado Warning | DVN | Benton, Linn | 29 min |
| Jul 14, 8:56 PM CDT | Tornado Warning | DVN | Delaware, Linn | 49 min |
| Jul 14, 9:08 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Iowa | 32 min |
| Jul 14, 9:29 PM CDT | Tornado Warning | DVN | Delaware, Jones | 46 min |
| Jul 14, 10:02 PM CDT | Tornado Warning | DVN | Jones | 43 min |
| Jul 14, 10:14 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Jones, Linn | 46 min |
| Jul 14, 10:34 PM CDT | Tornado Warning | DVN | Cedar | 26 min |
| Jul 14, 10:41 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 49 min |
| Jul 14, 10:52 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Jones, Scott | 38 min |
| Jul 15, 8:58 AM CDT | Special Weather Statement | DVN | Henry, Jefferson | 47 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.