Alert archive / Illinois / Tornado Warnings in 2011
Tornado Warning 125, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Jun 18, 2011, 6:21 AM CDT for 5 counties in Illinois. It was in force for 39 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
- Jun 18, 2011, 6:21 AM CDT (11:21 UTC)
- Expired
- Jun 18, 2011, 7:00 AM CDT
- In force
- 39 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
Counties Clinton County, IL, Monroe County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL
The radar
The St Louis radar (KLSX), 79 km from the middle of the area, began a volume at 11:24 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 |
|---|---|---|---|
| Jun 18, 6:22 AM CDT | TSTM WND GST 62 | Mascoutah, 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 |
|---|---|---|---|
| Jun 18, 2:44 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 11.4 hours before the alert went out and 223 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
- 601 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 644 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
812 WFUS53 KLSX 181121 TORLSX ILC027-133-157-163-189-181200- /O.NEW.KLSX.TO.W.0125.110618T1121Z-110618T1200Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 621 AM CDT SAT JUN 18 2011 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... SOUTHWESTERN CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS... NORTHERN MONROE COUNTY IN SOUTHWEST ILLINOIS... NORTH CENTRAL RANDOLPH COUNTY IN SOUTHWEST ILLINOIS... SOUTHERN ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS... WESTERN WASHINGTON COUNTY IN SOUTH CENTRAL ILLINOIS... * UNTIL 700 AM CDT * AT 620 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE SQUALL LINE CAPABLE OF PRODUCING BRIEF RAIN-WRAPPED TORNADOES IN ADDITION TO WIDESPREAD STRAIGHT LINE WIND DAMAGE. THESE DANGEROUS STORMS WERE LOCATED ALONG A LINE EXTENDING FROM COLUMBIA TO FOUNTAIN...AND MOVING EAST AT 35 MPH. * LOCATIONS IMPACTED INCLUDE... WATERLOO...MILLSTADT...BELLEVILLE...FREEBURG...MASCOUTAH...NEW DESIGN...SMITHTON...NEW ATHENS...MARISSA...NEW MEMPHIS...TILDEN... WARTBURG...BURKSVILLE...BARR...FLORAVILLE...PADERBORN...HECKER... FAYETTEVILLE...LENZBURG AND ST. LIBORY. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. && LAT...LON 3851 8959 3816 8966 3826 9028 3855 9020 TIME...MOT...LOC 1122Z 274DEG 33KT 3847 9017 3833 9021 $$ CVKING
5 follow-up statements
436 WWUS53 KLSX 181126 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 626 AM CDT SAT JUN 18 2011 ILC027-133-157-163-189-181200- /O.CON.KLSX.TO.W.0125.000000T0000Z-110618T1200Z/ MONROE IL-RANDOLPH IL-ST. CLAIR IL-WASHINGTON IL-CLINTON IL- 626 AM CDT SAT JUN 18 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHWESTERN CLINTON... WESTERN WASHINGTON...SOUTHERN ST. CLAIR...NORTH CENTRAL RANDOLPH AND NORTHERN MONROE COUNTIES UNTIL 700 AM CDT... AT 620 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS AND BRIEF RAIN-WRAPPED TORNADOES. THESE DANGEROUS STORMS WERE LOCATED ALONG A LINE EXTENDING FROM COLUMBIA TO FOUNTAIN...MOVING EAST AT 40 MPH. TWO VERY STRONG AREAS OF ROTATION EXIST ALONG THIS LINE...THE FIRST IS NEAR MILLSTADT....THE SECOND IS NEAR WATERLOO. TAKE COVER IMMEDIATELY! LOCATIONS IMPACTED INCLUDE... WATERLOO...MILLSTADT...BELLEVILLE...FREEBURG...MASCOUTAH...NEW DESIGN...SMITHTON...NEW ATHENS...NEW MEMPHIS...MARISSA...TILDEN... BURKSVILLE...BARR...FLORAVILLE...PADERBORN...HECKER... FAYETTEVILLE...LENZBURG...ST. LIBORY AND JOHANNISBURG. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. && LAT...LON 3851 8959 3816 8966 3826 9028 3855 9020 TIME...MOT...LOC 1124Z 274DEG 33KT 3847 9015 3833 9019 $$ CVKING
449 WWUS53 KLSX 181136 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 636 AM CDT SAT JUN 18 2011 ILC027-133-157-163-189-181200- /O.CON.KLSX.TO.W.0125.000000T0000Z-110618T1200Z/ MONROE IL-RANDOLPH IL-ST. CLAIR IL-WASHINGTON IL-CLINTON IL- 636 AM CDT SAT JUN 18 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHWESTERN CLINTON... WESTERN WASHINGTON...SOUTHERN ST. CLAIR...NORTH CENTRAL RANDOLPH AND NORTHERN MONROE COUNTIES UNTIL 700 AM CDT... AT 633 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS AND BRIEF RAIN-WRAPPED TORNADOES. THE TWO MOST INTENSE AREAS OF CIRCULATION...AND POSSIBLE TORNADOES...ARE NEAR SMITHTON AND NEW DESIGN. THE LINE IS MOVING EAST AT 45 MPH. LOCATIONS IMPACTED INCLUDE... FREEBURG...MASCOUTAH...NEW ATHENS...NEW MEMPHIS...MARISSA... TILDEN...HECKER...FAYETTEVILLE...LENZBURG...ST. LIBORY... DAMIANSVILLE...JOHANNISBURG...VENEDY AND STONE CHURCH. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. && LAT...LON 3851 8959 3816 8966 3826 9028 3855 9020 TIME...MOT...LOC 1135Z 286DEG 41KT 3842 8999 3829 9005 $$ CVKING
160 WWUS53 KLSX 181143 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 643 AM CDT SAT JUN 18 2011 ILC133-157-181152- /O.CAN.KLSX.TO.W.0125.000000T0000Z-110618T1200Z/ MONROE IL-RANDOLPH IL- 643 AM CDT SAT JUN 18 2011 ...THE TORNADO WARNING FOR NORTH CENTRAL RANDOLPH AND NORTHERN MONROE COUNTIES IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. A SEVERE THUNDERSTORM WARNING REMAIN IN EFFECT UNTIL 7 AM...EXPECT 60 MPH WINDS WITH THIS STORM. LAT...LON 3851 8959 3825 8964 3838 9002 3849 8998 TIME...MOT...LOC 1142Z 281DEG 45KT 3842 8990 $$ ILC027-163-189-181200- /O.CON.KLSX.TO.W.0125.000000T0000Z-110618T1200Z/ ST. CLAIR IL-WASHINGTON IL-CLINTON IL- 643 AM CDT SAT JUN 18 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHWESTERN CLINTON... WEST CENTRAL WASHINGTON AND CENTRAL ST. CLAIR COUNTIES UNTIL 700 AM CDT... AT 638 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS AND BRIEF RAIN-WRAPPED TORNADOES. THE STRONGEST AREA OF ROTATION IS LOCATED JUST NORTHEAST OF SMITHTON...OR NEAR FREEBURG...MOVING EAST AT 50 MPH. LOCATIONS IMPACTED INCLUDE... NEW MEMPHIS...FAYETTEVILLE...ST. LIBORY...JOHANNISBURG...VENEDY AND STONE CHURCH. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. && LAT...LON 3851 8959 3825 8964 3838 9002 3849 8998 TIME...MOT...LOC 1142Z 281DEG 45KT 3842 8990 $$ CVKING
718 WWUS53 KLSX 181151 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 651 AM CDT SAT JUN 18 2011 ILC027-181200- /O.CAN.KLSX.TO.W.0125.000000T0000Z-110618T1200Z/ CLINTON IL- 651 AM CDT SAT JUN 18 2011 ...THE TORNADO WARNING FOR SOUTHWESTERN CLINTON COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING CONTINUES TO BE SEVERE WITH DAMAGING WINDS AROUND 60 MPH...BUT THE ROTATION AND POSSIBLE TORNADO WILL BE MOVING SOUTH OF CLINTON COUNTY. LAT...LON 3841 8961 3825 8964 3836 8989 3843 8987 TIME...MOT...LOC 1150Z 286DEG 35KT 3838 8981 $$ ILC163-189-181200- /O.CON.KLSX.TO.W.0125.000000T0000Z-110618T1200Z/ ST. CLAIR IL-WASHINGTON IL- 651 AM CDT SAT JUN 18 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL WASHINGTON AND EAST CENTRAL ST. CLAIR COUNTIES UNTIL 700 AM CDT... AT 647 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS AND BRIEF RAIN-WRAPPED TORNADOES. THE POSSIBLE TORNADO WAS NEAR FAYETTEVILLE...MOVING EAST AT 40 MPH. LOCATIONS IMPACTED INCLUDE... FAYETTEVILLE...ST. LIBORY...JOHANNISBURG...STONE CHURCH AND VENEDY. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. && LAT...LON 3841 8961 3825 8964 3836 8989 3843 8987 TIME...MOT...LOC 1150Z 286DEG 35KT 3838 8981 $$ CVKING
663 WWUS53 KLSX 181156 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 656 AM CDT SAT JUN 18 2011 ILC163-189-181206- /O.EXP.KLSX.TO.W.0125.000000T0000Z-110618T1200Z/ ST. CLAIR IL-WASHINGTON IL- 656 AM CDT SAT JUN 18 2011 ...THE TORNADO WARNING FOR WEST CENTRAL WASHINGTON AND EAST CENTRAL ST. CLAIR COUNTIES WILL EXPIRE AT 700 AM CDT... THE TORNADO THREAT HAS DIMINISHED...THE CIRCULATION OR AREA OF ROTATION HAS WEAKENED...THEREFORE THE TORNADO WARNING HAS EXPIRED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR THE AREA AS 60 TO 70 MPH WINDS ARE STILL EXPECTED WITH THIS SQUALL LINE. LAT...LON 3841 8961 3825 8964 3836 8989 3843 8987 TIME...MOT...LOC 1156Z 286DEG 35KT 3836 8974 $$ CVKING
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 12:30 AM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 45 min |
| Jun 18, 1:14 AM CDT | Flash Flood Warning | LSX | Macoupin, Montgomery | 12 hr |
| Jun 18, 1:16 AM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 29 min |
| Jun 18, 2:51 AM CDT | Flash Flood Warning | LSX | Fayette, Montgomery | 6 hr |
| Jun 18, 4:31 AM CDT | Flash Flood Warning | LSX | Bond, Fayette | 6 hr |
| Jun 18, 5:01 AM CDT | Flash Flood Warning | LSX | Clinton, Marion | 6 hr |
| Jun 18, 5:10 AM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Calhoun, Greene, Pike | 65 min |
| Jun 18, 5:18 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey, Madison, Monroe, Saint Clair | 57 min |
| Jun 18, 5:30 AM CDT | Tornado Warning | LSX | Calhoun, Greene, Jersey, Madison, Pike | 19 min |
| Jun 18, 6:09 AM CDT | Severe Thunderstorm Warning | LSX | Jersey, Macoupin, Madison, Montgomery | 51 min |
| Jun 18, 6:20 AM CDT | Severe Thunderstorm Warning | LSX | Clinton, Madison, Monroe, Randolph, Saint Clair, Washington | 40 min |
| Jun 18, 6:51 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette, Madison, Marion, Randolph and 2 more | 54 min |
| Jun 18, 7:24 AM CDT | Severe Thunderstorm Warning | LSX | Clinton, Marion | 30 min |
| Jun 18, 1:06 PM CDT | Areal Flood Warning | LSX | Macoupin, Montgomery | 4 hr |
| Jun 18, 3:57 PM CDT | Flash Flood Watch | LSX | Bond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more | 15 hr |
| Jun 18, 4:49 PM CDT | River Flood Warning | LSX | Fayette | 5 days |
| Jun 18, 5:01 PM CDT | Areal Flood Warning | LSX | Macoupin, Montgomery | 23 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.