Alert archive / Illinois / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 313, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Sep 25, 2012, 5:43 PM CDT for Clinton County, Washington County, Illinois. It was in force for 62 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
- Sep 25, 2012, 5:43 PM CDT (22:43 UTC)
- Expired
- Sep 25, 2012, 6:45 PM CDT
- In force
- 62 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Clinton County, IL, Washington County, IL
The radar
The St Louis radar (KLSX), 118 km from the middle of the area, began a volume at 22:44 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 |
|---|---|---|---|
| Sep 25, 5:05 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.7 hours before the alert went out and 191 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
- 221 J/kg
- Mixed-layer CIN
- -192 J/kg
- Mixed-layer LCL
- 560 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.7
The text
As transmitted, in the capitals the NWS used until 2016.
648
WUUS53 KLSX 252243
SVRLSX
ILC027-189-252345-
/O.NEW.KLSX.SV.W.0313.120925T2243Z-120925T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
543 PM CDT TUE SEP 25 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS...
NORTHWESTERN WASHINGTON COUNTY IN SOUTH CENTRAL ILLINOIS...
* UNTIL 645 PM CDT
* AT 540 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
GERMANTOWN...AND MOVING EAST AT 20 MPH.
HAZARD...HALF DOLLAR SIZE HAIL AND 60 MPH WIND GUSTS.
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...
SHATTUC...FROGTOWN...BARTELSO...COVINGTON...POSEY...HUEY...HOFFMAN
AND FERRIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ST
LOUIS.
&&
LAT...LON 3863 8914 3849 8915 3850 8938 3836 8940
3848 8958 3859 8957
TIME...MOT...LOC 2244Z 272DEG 19KT 3852 8951
HAIL...1.25IN
WIND...60 MPH
$$
TES2 follow-up statements
882
WWUS53 KLSX 252301
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
601 PM CDT TUE SEP 25 2012
ILC027-189-252345-
/O.CON.KLSX.SV.W.0313.000000T0000Z-120925T2345Z/
WASHINGTON IL-CLINTON IL-
601 PM CDT TUE SEP 25 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
CLINTON AND NORTHERN WASHINGTON COUNTIES UNTIL 645 PM CDT...
AT 558 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES SOUTH OF
BECKEMEYER...AND MOVING EAST AT 20 MPH.
HAZARD...HALF DOLLAR SIZE HAIL AND 60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.
LOCATIONS IMPACTED INCLUDE...
SHATTUC...POSEY...HUEY...HOFFMAN AND FERRIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ST
LOUIS.
&&
LAT...LON 3863 8914 3849 8915 3850 8938 3836 8940
3848 8958 3859 8957
TIME...MOT...LOC 2301Z 272DEG 19KT 3852 8940
HAIL...1.25IN
WIND...60 MPH
$$
TES269
WWUS53 KLSX 252334 RRA
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
634 PM CDT TUE SEP 25 2012
ILC027-189-252345-
/O.CON.KLSX.SV.W.0313.000000T0000Z-120925T2345Z/
WASHINGTON IL-CLINTON IL-
634 PM CDT TUE SEP 25 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
CLINTON AND NORTHERN WASHINGTON COUNTIES UNTIL 645 PM CDT...
AT 630 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES SOUTHEAST
OF GERMANTOWN...AND MOVING EAST AT 20 MPH.
HAZARD...HALF DOLLAR SIZE HAIL AND 60 MPH WIND GUSTS.
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...
SHATTUC...POSEY...HOFFMAN...HUEY AND FERRIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ST
LOUIS.
&&
LAT...LON 3863 8914 3849 8915 3850 8938 3836 8940
3848 8958 3859 8957
TIME...MOT...LOC 2335Z 264DEG 15KT 3849 8941
HAIL...1.25IN
WIND...60 MPH
$$
TESThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 25, 3:38 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette, Marion | 22 min |
| Sep 25, 4:36 AM CDT | Areal Flood Advisory | LSX | Pike | 5 hr |
| Sep 25, 4:29 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Madison, Saint Clair | 46 min |
| Sep 25, 4:39 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Saint Clair | 51 min |
| Sep 25, 5:05 PM CDT | Severe Thunderstorm Warning | LSX | Clinton | 55 min |
| Sep 25, 5:07 PM CDT | Tornado Warning | LSX | Clinton | 23 min |
| Sep 25, 5:09 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey, Madison | 51 min |
| Sep 25, 5:12 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Saint Clair | 18 min |
| Sep 25, 5:19 PM CDT | Tornado Warning | LSX | Washington | 26 min |
| Sep 25, 5:28 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 47 min |
| Sep 25, 5:34 PM CDT | Tornado Warning | LSX | Washington | 41 min |
| Sep 25, 6:08 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Monroe, Saint Clair | 52 min |
| Sep 25, 6:14 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 46 min |
| Sep 25, 6:19 PM CDT | Areal Flood Advisory | LSX | Clinton, Marion, Washington | 6 hr |
| Sep 25, 6:30 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 26 min |
| Sep 25, 6:45 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Madison, Marion, Washington | 45 min |
| Sep 25, 6:50 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 46 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.