Alert archive / Illinois / Tornado Warnings in 2011
Tornado Warning 7, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at May 22, 2011, 8:24 PM CDT for Scott County, Iowa; Henry County, Rock Island County, Illinois. It was in force for 51 min. 13 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
- May 22, 2011, 8:24 PM CDT (01:24 UTC)
- Expired
- May 22, 2011, 9:15 PM CDT
- In force
- 51 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
Counties Scott County, IA, Henry County, IL, Rock Island County, IL
The radar
The Quad Cities radar (KDVN), 12 km from the middle of the area, began a volume at 01:25 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 |
|---|---|---|---|
| May 22, 8:26 PM CDT | HAIL 1 | Davenport Municipal Air, IA | |
| May 22, 8:29 PM CDT | TSTM WND GST 65 | Davenport Municipal Air, IA | |
| May 22, 8:30 PM CDT | FUNNEL CLOUD | Davenport, IA | I80 EXIT 292 |
| May 22, 8:30 PM CDT | TSTM WND DMG | 1 E Davenport Municipal, IA | POWER POLES LEANING BUT NOT SNAPPED OFF |
| May 22, 8:35 PM CDT | TSTM WND DMG | Davenport, IA | TWO LIGHT POLES BROKEN OFF AT CAR DEALERSHIP. SECONDARY DAMAGE DONE TO VEHICLE. REPORTED BY KWQC TV. TIME ESTIMATED. |
| May 22, 8:40 PM CDT | FUNNEL CLOUD | Rock Island, IL | MULTIPLE REPORTS OF FUNNEL CLOUDS OVER THE MISSISSIPPI RIVER NEAR ARSENAL ISLAND |
| May 22, 8:45 PM CDT | TSTM WND DMG | Davenport, IA | SHOPPING CARTS IN THE AIR AT TARGET 53RD AND ELMORE |
| May 22, 8:45 PM CDT | TSTM WND GST 64 | 2 W Riverdale, IA | TIME ESTIMATED ON CORRECTION TO MATCH WHEN STORM OCCURED. |
| May 22, 8:50 PM CDT | FUNNEL CLOUD | Panorama Park, IA | |
| May 22, 8:54 PM CDT | FUNNEL CLOUD | Carbon Cliff, IL | |
| May 22, 8:56 PM CDT | FUNNEL CLOUD | Carbon Cliff, IL | |
| May 22, 9:04 PM CDT | TSTM WND GST 45 | 1 Ssw Osborn, IL | DELAYED REPORT. WINDS 40 TO OVER 45 MPH. |
| May 22, 9:04 PM CDT | HAIL 0.5 | 1 Ssw Osborn, IL |
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 |
|---|---|---|---|
| May 22, 12:51 PM CDT | Tornado Watch | SPC | 10 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 1.4 hours before the alert went out and 6 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
- 1935 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 935 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 271 m²/s²
- 0-3 km storm-relative helicity
- 364 m²/s²
- Significant tornado parameter
- 3.4
- Supercell composite
- 19.9
The text
As transmitted, in the capitals the NWS used until 2016.
883 WFUS53 KDVN 230124 TORDVN IAC163-ILC073-161-230215- /O.NEW.KDVN.TO.W.0007.110523T0124Z-110523T0215Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE QUAD CITIES IA IL 824 PM CDT SUN MAY 22 2011 THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN SCOTT COUNTY IN EAST CENTRAL IOWA... NORTHWESTERN HENRY COUNTY IN NORTHWEST ILLINOIS... EAST CENTRAL ROCK ISLAND COUNTY IN NORTHWEST ILLINOIS... * UNTIL 915 PM CDT. * AT 821 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO NEAR DAVENPORT...MOVING EAST AT 25 MPH. * THE TORNADO WILL BE NEAR... ROCK ISLAND ARSENAL...DAVENPORT MUNICIPAL AIRPORT AND ELDRIDGE AROUND 830 PM CDT... MOLINE AROUND 835 PM CDT... BETTENDORF...PANORAMA PARK...RIVERDALE AND EAST MOLINE AROUND 840 PM CDT... PLEASANT VALLEY AND CAMPBELLS ISLAND AROUND 845 PM CDT... THIS INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 288 AND 306. THIS INCLUDES INTERSTATE 80 IN ILLINOIS BETWEEN MILE MARKERS 1 AND 7. THIS INCLUDES INTERSTATE 74 IN IOWA BETWEEN MILE MARKERS 1 AND 5. THIS INCLUDES INTERSTATE 74 IN ILLINOIS BETWEEN MILE MARKERS 2 AND 3. THIS INCLUDES INTERSTATE 280 BETWEEN MILE MARKERS 1 AND 11. THIS INCLUDES INTERSTATE 88 BETWEEN MILE MARKERS 1 AND 5. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE IN A TORNADO IS IN A BASEMENT OR INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR OF A BUILDING. && LAT...LON 4173 9026 4148 9022 4145 9071 4165 9072 TIME...MOT...LOC 0125Z 262DEG 23KT 4156 9060 $$ ERVIN
4 follow-up statements
285 WWUS53 KDVN 230132 SVSDVN SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE QUAD CITIES IA IL 832 PM CDT SUN MAY 22 2011 IAC163-ILC073-161-230215- /O.CON.KDVN.TO.W.0007.000000T0000Z-110523T0215Z/ SCOTT IA-HENRY IL-ROCK ISLAND IL- 832 PM CDT SUN MAY 22 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR EAST CENTRAL ROCK ISLAND...NORTHWESTERN HENRY AND SOUTHEASTERN SCOTT COUNTIES... AT 829 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED APPROXIMATELY NEAR DAVENPORT...MOVING EAST AT 25 MPH. VERY STRONG ROTATING WINDS OCCURED AT THE DAVENPORT AIRPORT AT 826 PM. THE TORNADO WILL BE NEAR... BETTENDORF...PANORAMA PARK...RIVERDALE AND EAST MOLINE AROUND 840 PM CDT... PLEASANT VALLEY...HAMPTON...CAMPBELLS ISLAND AND SILVIS AROUND 845 PM CDT... ILLINIWEK PARK AND BARSTOW AROUND 850 PM CDT... THIS INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 294 AND 306. THIS INCLUDES INTERSTATE 80 IN ILLINOIS BETWEEN MILE MARKERS 1 AND 6. THIS INCLUDES INTERSTATE 74 IN IOWA BETWEEN MILE MARKERS 1 AND 5. THIS INCLUDES INTERSTATE 88 BETWEEN MILE MARKERS 1 AND 5. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEAVY RAIN MAY OBSCURE THE APPROACH OF THE TORNADO. TAKE SHELTER NOW! && LAT...LON 4149 9062 4167 9061 4173 9026 4148 9022 TIME...MOT...LOC 0131Z 262DEG 23KT 4158 9055 $$ ERVIN
146 WWUS53 KDVN 230138 SVSDVN SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE QUAD CITIES IA IL 838 PM CDT SUN MAY 22 2011 IAC163-ILC073-161-230215- /O.CON.KDVN.TO.W.0007.000000T0000Z-110523T0215Z/ SCOTT IA-HENRY IL-ROCK ISLAND IL- 838 PM CDT SUN MAY 22 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR EAST CENTRAL ROCK ISLAND...NORTHWESTERN HENRY AND SOUTHEASTERN SCOTT COUNTIES... AT 834 PM CDT...TRAINED SPOTTERS REPORTED A FUNNEL CLOUD AND DOPPLER RADAR INDICATED A TORNADO. THIS TORNADO WAS LOCATED APPROXIMATELY NEAR NORTHERN EDGE OF BETTENDORF...MOVING EAST AT 25 MPH. THE FUNNEL CLOUD OCCURRED NEAR 56TH STREET IN DAVENPORT AROUND 832 PM. THE TORNADO WILL BE NEAR... PLEASANT VALLEY...ILLINIWEK PARK...HAMPTON AND SILVIS AROUND 845 PM CDT... LE CLAIRE AND BARSTOW AROUND 850 PM CDT... PORT BYRON...RAPIDS CITY...PRINCETON AND PRINCETON WILDLIFE AREA AROUND 855 PM CDT... THIS INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 293 AND 306. THIS INCLUDES INTERSTATE 80 IN ILLINOIS BETWEEN MILE MARKERS 1 AND 6. THIS INCLUDES INTERSTATE 74 IN IOWA BETWEEN MILE MARKERS 1 AND 5. THIS INCLUDES INTERSTATE 88 BETWEEN MILE MARKERS 1 AND 6. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEAVY RAIN MAY OBSCURE THE APPROACH OF THE TORNADO. TAKE SHELTER NOW! A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT SUNDAY EVENING FOR EASTERN IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI. && LAT...LON 4149 9062 4167 9061 4173 9026 4148 9022 TIME...MOT...LOC 0137Z 262DEG 23KT 4159 9049 $$ ERVIN
051
WWUS53 KDVN 230147
SVSDVN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
847 PM CDT SUN MAY 22 2011
IAC163-ILC073-161-230215-
/O.CON.KDVN.TO.W.0007.000000T0000Z-110523T0215Z/
SCOTT IA-HENRY IL-ROCK ISLAND IL-
847 PM CDT SUN MAY 22 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR EAST
CENTRAL ROCK ISLAND...NORTHWESTERN HENRY AND SOUTHEASTERN SCOTT
COUNTIES...
AT 845 PM CDT...TRAINED SPOTTERS CONTINUED TO REPORT A WALL CLOUD.
NEAR THE MISSISSIPPI RIVER. THIS POSSIBLE TORNADO WAS LOCATED
APPROXIMATELY NEAR PLEASANT VALLEY...OR NEAR BETTENDORF...MOVING
EAST AT 25 MPH.
THE TORNADO WILL BE NEAR...
LE CLAIRE AND BARSTOW AROUND 850 PM CDT...
PORT BYRON...RAPIDS CITY...PRINCETON AND PRINCETON WILDLIFE AREA
AROUND 855 PM CDT...
CORDOVA AND OSBORN AROUND 900 PM CDT...
THIS INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 295 AND 306.
THIS INCLUDES INTERSTATE 80 IN ILLINOIS BETWEEN MILE MARKERS 1 AND 6.
THIS INCLUDES INTERSTATE 74 IN IOWA BETWEEN MILE MARKERS 1 AND 5.
THIS INCLUDES INTERSTATE 88 BETWEEN MILE MARKERS 1 AND 5.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HEAVY RAIN MAY OBSCURE THE APPROACH OF THE TORNADO. TAKE SHELTER NOW!
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT SUNDAY EVENING FOR
EASTERN IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI.
&&
LAT...LON 4149 9062 4159 9058 4166 9052 4173 9026
4148 9022
TIME...MOT...LOC 0143Z 262DEG 23KT 4160 9044
$$
ERVIN230
WWUS53 KDVN 230207
SVSDVN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
907 PM CDT SUN MAY 22 2011
IAC163-ILC073-161-230216-
/O.EXP.KDVN.TO.W.0007.000000T0000Z-110523T0215Z/
SCOTT IA-HENRY IL-ROCK ISLAND IL-
907 PM CDT SUN MAY 22 2011
...THE TORNADO WARNING FOR EAST CENTRAL ROCK ISLAND...NORTHWESTERN
HENRY AND SOUTHEASTERN SCOTT COUNTIES WILL EXPIRE AT 915 PM CDT...
THE SEVERE THUNDERSTORM THAT WAS CAPABLE OF PRODUCING A TORNADO HAS
WEAKENED. THEREFORE THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE.
LAT...LON 4149 9062 4159 9058 4166 9052 4173 9026
4148 9022
TIME...MOT...LOC 0206Z 262DEG 23KT 4162 9025
$$
ERVINThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 7:05 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Henry | 55 min |
| May 22, 7:48 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Putnam | 57 min |
| May 22, 8:57 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Rock Island, Whiteside | 63 min |
Nearby
Tornado Warnings in Illinois, 2011Tornado Warnings in Iowa, 2011Every tornado warning in 2011Tornadoes in 2011
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.