Alert archive / Illinois / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 249, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 16, 2012, 3:43 PM CDT for Bond County, Fayette County, Montgomery County, Illinois. It was in force for 47 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
- Aug 16, 2012, 3:43 PM CDT (20:43 UTC)
- Expired
- Aug 16, 2012, 4:30 PM CDT
- In force
- 47 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Bond County, IL, Fayette County, IL, Montgomery County, IL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 16, 3:50 PM CDT | TSTM WND DMG | Greenville, IL | COUNTY SHERIFF REPORTS SCATTERED TREES DOWN ACROSS THE COUNTY WITH A COUPLE OF ROADS CLOSED DUE TO DOWNED TREES. |
| Aug 16, 4:00 PM CDT | TSTM WND DMG | Vandalia, IL | TREES DOWN ON THE NORTH SIDE OF TOWN. |
| Aug 16, 4:09 PM CDT | HAIL 0.88 | Mulberry Grove, IL | |
| Aug 16, 4:15 PM CDT | TSTM WND DMG | Shobonier, IL | TREES DOWN. |
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 |
|---|---|---|---|
| Aug 16, 1:05 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 8.7 hours before the alert went out and 140 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
- 817 J/kg
- Mixed-layer CIN
- -262 J/kg
- Mixed-layer LCL
- 1559 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
611
WUUS53 KLSX 162043 RRA
SVRLSX
ILC005-051-135-162130-
/O.NEW.KLSX.SV.W.0249.120816T2043Z-120816T2130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
343 PM CDT THU AUG 16 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
BOND COUNTY IN SOUTH CENTRAL ILLINOIS...
FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS...
SOUTHEASTERN MONTGOMERY COUNTY IN SOUTH CENTRAL ILLINOIS...
* UNTIL 430 PM CDT
* AT 339 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM BEECHER CITY TO COFFEEN...AND MOVING SOUTHEAST
AT 25 MPH.
HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL.
SOURCE...TRAINED WEATHER SPOTTERS. AT 334 PM CDT...TRAINED
SPOTTERS REPORTED LARGE TREE LIMBS DOWN IN NOKOMIS.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.
* LOCATIONS IMPACTED INCLUDE...
GREENVILLE...VANDALIA...WRIGHTS CORNER...VAN BURENSBURG...WOBURN...
BEAVER CREEK...MULBERRY GROVE...ST. ELMO...TAMALCO...BROWNSTOWN...
SHOBONIER...FARINA...BAYLE CITY...DUDLEYVILLE...SMITHBORO...
SHAFTER...PLEASANT MOUND...HAGERSTOWN...AVENA AND PITTSBURG.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3882 8874 3883 8913 3873 8914 3875 8945
3910 8961 3922 8914 3922 8881 3892 8880
3892 8870 3884 8869
TIME...MOT...LOC 2042Z 301DEG 23KT 3921 8876 3907 8940
HAIL...0.75IN
WIND...60 MPH
$$
BRITT3 follow-up statements
041
WWUS53 KLSX 162058
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
358 PM CDT THU AUG 16 2012
ILC005-051-135-162130-
/O.CON.KLSX.SV.W.0249.000000T0000Z-120816T2130Z/
MONTGOMERY IL-FAYETTE IL-BOND IL-
358 PM CDT THU AUG 16 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR BOND...FAYETTE
AND SOUTHEASTERN MONTGOMERY COUNTIES UNTIL 430 PM CDT...
AT 356 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM ALTAMONT TO GREENVILLE...AND MOVING SOUTHEAST AT
35 MPH.
HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS. TREES WERE REPORTED DOWN EARLIER
IN NOKOMIS WITH THIS LINE OF STORMS.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.
LOCATIONS IMPACTED INCLUDE...
VANDALIA...GREENVILLE...ST. ELMO...BROWNSTOWN...MULBERRY GROVE...
BEAVER CREEK...SHOBONIER...TAMALCO...FARINA...AVENA...HAGERSTOWN...
DUDLEYVILLE...SMITHBORO...PLEASANT MOUND...ST. JAMES...PITTSBURG...
LOOGOOTEE...ST. PAUL...ST. PETER AND LA CLEDE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE
SHOULD MOVE TO A SHELTER...INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.
&&
LAT...LON 3882 8874 3883 8913 3873 8914 3875 8945
3910 8961 3922 8914 3922 8881 3892 8880
3892 8870 3884 8869
TIME...MOT...LOC 2057Z 308DEG 32KT 3906 8876 3893 8940
HAIL...1.00IN
WIND...60 MPH
$$
BRITT706
WWUS53 KLSX 162113
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
413 PM CDT THU AUG 16 2012
ILC135-162122-
/O.CAN.KLSX.SV.W.0249.000000T0000Z-120816T2130Z/
MONTGOMERY IL-
413 PM CDT THU AUG 16 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MONTGOMERY COUNTY
IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA. ADDITIONAL STRONG THUNDERSTORMS ARE POSSIBLE AND A
SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 8 PM CDT.
LAT...LON 3882 8874 3883 8913 3873 8914 3875 8945
3894 8953 3902 8923 3922 8881 3892 8880
3892 8870 3884 8869
TIME...MOT...LOC 2112Z 294DEG 28KT 3908 8878 3886 8920
3876 8938
$$
ILC005-051-162130-
/O.CON.KLSX.SV.W.0249.000000T0000Z-120816T2130Z/
FAYETTE IL-BOND IL-
413 PM CDT THU AUG 16 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR BOND AND
FAYETTE COUNTIES UNTIL 430 PM CDT...
AT 408 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM WRIGHTS CORNER TO MULBERRY GROVE TO BEAVER
CREEK...AND MOVING SOUTHEAST AT 30 MPH.
HAZARD...QUARTER SIZE HAIL AND 70 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. TREE BRANCHES
UP TO THREE INCHES IN DIAMETER BROKEN. POSSIBLE MINOR DAMAGE
TO SHINGLE ROOFS AND METAL OUTBUILDINGS.
LOCATIONS IMPACTED INCLUDE...
ST. ELMO...TAMALCO...SHOBONIER...FARINA...ST. JAMES...ST. PAUL...
LOOGOOTEE...ST. PETER AND LA CLEDE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP QUICKLY
FROM SEVERE THUNDERSTORMS. IF YOU SPOT A TORNADO GO AT ONCE INTO THE
BASEMENT OR SMALL CENTRAL ROOM IN A STURDY STRUCTURE.
PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE
SHOULD MOVE TO A SHELTER...INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.
&&
LAT...LON 3882 8874 3883 8913 3873 8914 3875 8945
3894 8953 3902 8923 3922 8881 3892 8880
3892 8870 3884 8869
TIME...MOT...LOC 2112Z 294DEG 28KT 3908 8878 3886 8920
3876 8938
HAIL...1.00IN
WIND...70 MPH
$$
BRITT381
WWUS53 KLSX 162131
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
431 PM CDT THU AUG 16 2012
ILC005-051-162141-
/O.EXP.KLSX.SV.W.0249.000000T0000Z-120816T2130Z/
FAYETTE IL-BOND IL-
431 PM CDT THU AUG 16 2012
...THE SEVERE THUNDERSTORM WARNING FOR BOND AND FAYETTE COUNTIES HAS
EXPIRED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA. HOWEVER...A NEW SEVERE THUNDERSTORM WARNING HAS BEEN
ISSUED FOR SOUTHERN FAYETTE COUNTY UNTIL 5 PM CDT.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 8 PM CDT.
LAT...LON 3882 8874 3883 8913 3873 8914 3875 8945
3894 8953 3902 8923 3922 8881 3892 8880
3892 8870 3884 8869
TIME...MOT...LOC 2113Z 294DEG 28KT 3908 8877 3886 8919
3876 8937
$$
BRITTThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 2:11 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene | 39 min |
| Aug 16, 3:08 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Madison | 37 min |
| Aug 16, 3:18 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 42 min |
| Aug 16, 3:28 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 47 min |
| Aug 16, 3:43 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 47 min |
| Aug 16, 3:52 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Madison | 38 min |
| Aug 16, 4:07 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Marion | 53 min |
| Aug 16, 4:25 PM CDT | Severe Thunderstorm Warning | LSX | Fayette | 35 min |
| Aug 16, 4:26 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 24 min |
| Aug 16, 4:49 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Marion, Washington | 56 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.