Alert archive / Illinois / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 209, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 8, 2012, 2:29 PM CDT for 4 counties in Illinois. It was in force for 46 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
- Jul 8, 2012, 2:29 PM CDT (19:29 UTC)
- Expired
- Jul 8, 2012, 3:15 PM CDT
- In force
- 46 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Bond County, IL, Clinton County, IL, Fayette County, IL, Marion County, IL
The radar
The St Louis radar (KLSX), 130 km from the middle of the area, began a volume at 19:30 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 nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 7.5 hours before the alert went out and 161 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
- 588 J/kg
- Mixed-layer CIN
- -359 J/kg
- Mixed-layer LCL
- 1252 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
484
WUUS53 KLSX 081929
SVRLSX
ILC005-027-051-121-082015-
/O.NEW.KLSX.SV.W.0209.120708T1929Z-120708T2015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
229 PM CDT SUN JUL 8 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN BOND COUNTY IN SOUTH CENTRAL ILLINOIS...
NORTHEASTERN CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS...
SOUTHWESTERN FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS...
NORTHWESTERN MARION COUNTY IN SOUTH CENTRAL ILLINOIS...
* UNTIL 315 PM CDT
* AT 226 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR TAMALCO...
AND MOVING EAST AT 15 MPH.
HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.
* LOCATIONS IMPACTED INCLUDE...
TAMALCO...BOULDER...SHOBONIER...PATOKA...FAIRMAN...SHATTUC...
KEYESPORT...PITTSBURG...FERRIN AND VERNON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3885 8900 3856 8916 3868 8950 3896 8930
TIME...MOT...LOC 1929Z 288DEG 11KT 3876 8932
HAIL...0.75IN
WIND...60 MPH
$$
KANOFSKY1 follow-up statement
547 WWUS53 KLSX 082006 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 306 PM CDT SUN JUL 8 2012 ILC005-027-051-121-082016- /O.EXP.KLSX.SV.W.0209.000000T0000Z-120708T2015Z/ MARION IL-FAYETTE IL-BOND IL-CLINTON IL- 306 PM CDT SUN JUL 8 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CLINTON... SOUTHEASTERN BOND...SOUTHWESTERN FAYETTE AND NORTHWESTERN MARION COUNTIES WILL EXPIRE AT 315 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM. LAT...LON 3885 8900 3856 8916 3868 8950 3896 8930 TIME...MOT...LOC 2006Z 288DEG 11KT 3872 8918 $$ KANOFSKY
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 7:06 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 32 min |
| Jul 7, 7:58 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 47 min |
| Jul 7, 8:40 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 50 min |
| Jul 8, 5:03 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 42 min |
| Jul 8, 5:42 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 48 min |
| Jul 8, 5:44 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 46 min |
| Jul 8, 5:57 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 27 min |
| Jul 8, 6:49 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 41 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2012Every severe thunderstorm warning 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.