Alert archive / Illinois / Tornado Warnings in 2011
Tornado Warning 51, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 22, 2011, 8:33 PM CDT for Madison County, Saint Clair County, Illinois. It was in force for 42 min. 4 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
- Apr 22, 2011, 8:33 PM CDT (01:33 UTC)
- Expired
- Apr 22, 2011, 9:15 PM CDT
- In force
- 42 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
Counties Madison County, IL, Saint Clair County, IL
The radar
The St Louis radar (KLSX), 80 km from the middle of the area, began a volume at 01:33 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 |
|---|---|---|---|
| Apr 22, 8:35 PM CDT | FUNNEL CLOUD | Pontoon Beach, IL | FUNNEL CLOUD AT 270 |
| Apr 22, 8:35 PM CDT | TSTM WND DMG | Glen Carbon, IL | TRAILER FLIPPED IN FIELD USED AS BILLBOARD AT FIRST EXIT N ON 255 AND 270 |
| Apr 22, 9:21 PM CDT | TSTM WND DMG | Edwardsville, IL | POWER OUTAGES AND STREET FLOODING |
| Apr 22, 9:22 PM CDT | TSTM WND DMG | Edwardsville, IL | TREE DAMAGE THROUGHOUT AREA. |
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 |
|---|---|---|---|
| Apr 22, 3:34 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 1.6 hours before the alert went out and 188 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
- 342 J/kg
- Mixed-layer CIN
- -152 J/kg
- Mixed-layer LCL
- 492 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 351 m²/s²
- 0-3 km storm-relative helicity
- 346 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
282
WFUS53 KLSX 230133
TORLSX
ILC119-163-230215-
/O.NEW.KLSX.TO.W.0051.110423T0133Z-110423T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
833 PM CDT FRI APR 22 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHEASTERN MADISON COUNTY IN SOUTHWEST ILLINOIS...
NORTHEASTERN ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS...
* UNTIL 915 PM CDT
* AT 829 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR GRANITE CITY...AND MOVING EAST AT 35 MPH.
THIS STORM HAS A HISTORY OF PRODUCING DAMAGING TORNADOES. TAKE
SHELTER NOW.
* LOCATIONS IMPACTED INCLUDE...
PONTOON BEACH...CASEYVILLE...COLLINSVILLE...GLEN CARBON...
EDWARDSVILLE...MARYVILLE...TROY...LEBANON...HIGHLAND...MARINE...ST.
JACOB...KUHN...FRUIT...KAUFMAN...SUMMERFIELD AND GRANTFORK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 3866 8966 3865 8971 3857 8972 3863 9012
3887 8998 3887 8961 3885 8960
TIME...MOT...LOC 0132Z 276DEG 32KT 3874 9008
$$
GLASS2 follow-up statements
124
WWUS53 KLSX 230141
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
841 PM CDT FRI APR 22 2011
ILC119-163-230215-
/O.CON.KLSX.TO.W.0051.000000T0000Z-110423T0215Z/
ST. CLAIR IL-MADISON IL-
841 PM CDT FRI APR 22 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN MADISON AND
NORTHEASTERN ST. CLAIR COUNTIES UNTIL 915 PM CDT...
AT 837 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR GLEN CARBON...MOVING EAST AT 50 MPH.
THIS STORM HAS A HISTORY OF DESTRUCTIVE TORNADOES. TAKE SHELTER NOW
IF YOU ARE IN THE PATH.
LOCATIONS IMPACTED INCLUDE...
TROY...LEBANON...HIGHLAND...MARINE...ST. JACOB...KUHN...FRUIT...
KAUFMAN...SUMMERFIELD AND GRANTFORK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 3866 8966 3865 8971 3857 8972 3863 9012
3887 8998 3887 8961 3885 8960
TIME...MOT...LOC 0140Z 271DEG 43KT 3875 8992
$$
GLASS436
WWUS53 KLSX 230158
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
858 PM CDT FRI APR 22 2011
ILC119-163-230215-
/O.CON.KLSX.TO.W.0051.000000T0000Z-110423T0215Z/
ST. CLAIR IL-MADISON IL-
858 PM CDT FRI APR 22 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN MADISON AND
NORTHEASTERN ST. CLAIR COUNTIES UNTIL 915 PM CDT...
AT 854 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR ST. JACOB...OR NEAR HIGHLAND...MOVING EAST AT
50 MPH. THIS STORM HAS A HISTORY OF DAMAGING TORNADOES.
LOCATIONS IMPACTED INCLUDE...
HIGHLAND AND GRANTFORK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR
THE TORNADO. TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT.
TAKE COVER NOW.
&&
LAT...LON 3866 8966 3865 8971 3857 8972 3860 8994
3887 8981 3887 8961 3885 8960
TIME...MOT...LOC 0157Z 271DEG 43KT 3873 8970
$$
GLASSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 7:59 PM CDT | Tornado Warning | LSX | Madison, Saint Clair | 46 min |
| Apr 22, 8:21 PM CDT | Tornado Warning | LSX | Monroe, Saint Clair | 39 min |
| Apr 22, 8:48 PM CDT | Tornado Warning | LSX | Monroe, Saint Clair | 57 min |
| Apr 22, 8:55 PM CDT | Tornado Warning | LSX | Bond, Clinton, Fayette, Madison, Saint Clair | 50 min |
| Apr 22, 9:01 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 20 min |
| Apr 22, 9:24 PM CDT | Tornado Warning | LSX | Clinton, Washington | 36 min |
| Apr 22, 9:30 PM CDT | Flash Flood Warning | LSX | Monroe, Saint Clair | 5 hr |
| Apr 22, 9:41 PM CDT | Tornado Warning | LSX | Bond, Fayette, Marion | 22 min |
| Apr 22, 9:51 PM CDT | Flash Flood Warning | LSX | Clinton, Washington | 5 hr |
| Apr 22, 9:59 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Marion, Washington | 11 min |
| Apr 22, 10:31 PM CDT | Tornado Warning | LSX | Monroe, Randolph, Saint Clair | 44 min |
| Apr 22, 10:55 PM CDT | Flash Flood Warning | LSX | Monroe, Randolph | 6 hr |
| Apr 22, 11:38 PM CDT | River Flood Warning | LSX | Brown | 25 days |
| Apr 22, 11:38 PM CDT | River Flood Warning | LSX | Morgan, Pike | 25 days |
| Apr 22, 11:38 PM CDT | River Flood Warning | LSX | Pike, Scott | 31 days |
| Apr 22, 11:53 PM CDT | River Flood Warning | LSX | Saint Clair | 14 days |
| Apr 23, 4:23 AM CDT | Flash Flood Warning | LSX | Monroe, Randolph | 8 hr |
| Apr 23, 12:29 PM CDT | Flash Flood Warning | LSX | Monroe, Randolph | 6 hr |
| Apr 23, 6:22 PM CDT | Flash Flood Warning | LSX | Monroe, Randolph | 6 hr |
Nearby
Tornado Warnings in Illinois, 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.