Alert archive / Illinois / Tornado Warnings in 2012
Tornado Warning 7, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Jan 17, 2012, 3:46 AM CST for Clinton County, Washington County, Illinois. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jan 17, 2012, 3:46 AM CST (09:46 UTC)
- Expired
- Jan 17, 2012, 4:15 AM CST
- In force
- 29 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
Counties Clinton County, IL, Washington County, IL
The radar
The St Louis radar (KLSX), 111 km from the middle of the area, began a volume at 09:46 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 16, 11:47 PM CST | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 9.8 hours before the alert went out and 203 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
- 2 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 748 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 431 m²/s²
- 0-3 km storm-relative helicity
- 500 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
892 WFUS53 KLSX 170946 TORLSX ILC027-189-171015- /O.NEW.KLSX.TO.W.0007.120117T0946Z-120117T1015Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 346 AM CST TUE JAN 17 2012 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... SOUTHERN CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS... NORTHERN WASHINGTON COUNTY IN SOUTH CENTRAL ILLINOIS... * UNTIL 415 AM CST * AT 343 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR OKAWVILLE...OR 10 MILES SOUTHEAST OF NEW BADEN...AND MOVING EAST AT 65 MPH. LARGE...GOLF BALL SIZED HAIL IS ALSO POSSIBLE WITH THIS STORM. * LOCATIONS IMPACTED INCLUDE... IRVINGTON...WAMAC...ADDIEVILLE...FROGTOWN...BARTELSO...COVINGTON... NEW MINDEN...POSEY...HUEGELY...HOYLETON AND HOFFMAN. THIS ALSO INCLUDES PARTS OF INTERSTATE 64 BETWEEN MILE MARKERS 34 AND 50. 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. TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW. TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ST LOUIS. && LAT...LON 3835 8964 3852 8968 3862 8914 3840 8914 TIME...MOT...LOC 0944Z 260DEG 55KT 3845 8954 $$ TRUETT
2 follow-up statements
438 WWUS53 KLSX 170954 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 354 AM CST TUE JAN 17 2012 ILC027-189-171015- /O.CON.KLSX.TO.W.0007.000000T0000Z-120117T1015Z/ WASHINGTON IL-CLINTON IL- 354 AM CST TUE JAN 17 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN CLINTON AND NORTHEASTERN WASHINGTON COUNTIES UNTIL 415 AM CST... AT 350 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 7 MILES EAST OF OKAWVILLE...OR 8 MILES NORTH OF NASHVILLE...MOVING EAST AT 65 MPH. LOCATIONS IMPACTED INCLUDE... IRVINGTON...WAMAC...HOYLETON AND HOFFMAN. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW. TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ST LOUIS. && LAT...LON 3838 8955 3853 8953 3862 8914 3840 8914 TIME...MOT...LOC 0954Z 260DEG 55KT 3848 8935 $$ TRUETT
711 WWUS53 KLSX 171015 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 415 AM CST TUE JAN 17 2012 ILC027-189-171023- /O.EXP.KLSX.TO.W.0007.000000T0000Z-120117T1015Z/ WASHINGTON IL-CLINTON IL- 415 AM CST TUE JAN 17 2012 ...THE TORNADO WARNING FOR SOUTHEASTERN CLINTON AND NORTHEASTERN WASHINGTON COUNTIES WILL EXPIRE AT 415 AM CST... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF THE WARNED AREA. THE STORM WILL BE PRODUCING HEAVY RAIN AND WIND GUSTS OF 30 TO 40 MPH AS IT MOVES ACROSS SOUTHERN MARION COUNTY...AND THE CENTRALIA...SALEM...AND CARTER AREAS...BETWEEN NOW AND 5 AM. IN ADDITION...STORMS OVER SOUTHERN ILLINOIS MAY REINTENSIFY... AND A TORNADO WATCH REMAINS IN EFFECT UNTIL 7AM. LAT...LON 3838 8955 3853 8953 3862 8914 3840 8914 TIME...MOT...LOC 1013Z 260DEG 45KT 3851 8912 $$ TRUETT
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 16, 11:59 PM CST | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 58 days |
| Jan 17, 1:23 AM CST | Severe Thunderstorm Warning | LSX | Calhoun | 37 min |
| Jan 17, 2:08 AM CST | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 37 min |
| Jan 17, 2:17 AM CST | Severe Thunderstorm Warning | LSX | Madison | 28 min |
| Jan 17, 2:35 AM CST | Tornado Warning | LSX | Monroe | 40 min |
| Jan 17, 2:38 AM CST | Severe Thunderstorm Warning | LSX | Clinton, Madison, Saint Clair | 52 min |
| Jan 17, 2:39 AM CST | Severe Thunderstorm Warning | LSX | Bond | 36 min |
| Jan 17, 3:07 AM CST | Tornado Warning | LSX | Clinton, Monroe, Saint Clair, Washington | 38 min |
| Jan 17, 3:23 AM CST | Severe Thunderstorm Warning | LSX | Clinton, Marion | 35 min |
| Jan 17, 4:34 AM CST | Areal Flood Advisory | LSX | Bond, Clinton, Fayette, Macoupin, Madison, Marion and 4 more | 60 days |
| Jan 17, 5:14 AM CST | Severe Thunderstorm Warning | LSX | Bond, Clinton, Madison, Saint Clair | 46 min |
| Jan 17, 5:22 AM CST | Severe Thunderstorm Warning | LSX | Monroe, Randolph | 38 min |
| Jan 17, 5:47 AM CST | Severe Thunderstorm Warning | LSX | Clinton, Fayette, Marion | 43 min |
| Jan 17, 5:53 AM CST | Severe Thunderstorm Warning | LSX | Monroe, Randolph, Saint Clair, Washington | 52 min |
| Jan 17, 6:01 AM CST | Severe Thunderstorm Warning | LSX | Randolph | 44 min |
| Jan 17, 6:35 AM CST | Severe Thunderstorm Warning | LSX | Randolph | 25 min |
Nearby
Tornado Warnings in Illinois, 2012Every tornado warning in 2012Tornadoes in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.