Alert archive / Illinois / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 259, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Sep 5, 2012, 8:38 AM CDT for Fayette County, Montgomery County, Illinois. It was in force for 37 min. 5 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
- Sep 5, 2012, 8:38 AM CDT (13:38 UTC)
- Expired
- Sep 5, 2012, 9:15 AM CDT
- In force
- 37 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Fayette County, IL, Montgomery County, IL
The radar
The Lincoln radar (KILX), 111 km from the middle of the area, began a volume at 13:37 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 |
|---|---|---|---|
| Sep 5, 8:54 AM CDT | TSTM WND GST 60 | 1 N Irving, IL | SEVERAL TWO TO THREE INCH LIMBS DOWN. |
| Sep 5, 9:05 AM CDT | TSTM WND DMG | Witt, IL | TREES AND POWER LINES REPORTED DOWN IN WITT BY MONTGOMERY COUNTY SHERIFFS OFFICE |
| Sep 5, 9:07 AM CDT | TSTM WND DMG | Hillsboro, IL | MONTGOMERY COUNTY SHERIFFS OFFICE REPORT TREES DOWN IN HILLSBORO. |
| Sep 5, 9:16 AM CDT | TSTM WND DMG | Witt, IL | POWER LINES AND TREES REPORTED DOWN IN WITT... REPORTED ILLINOIS STATE DISTRICT 11. |
| Sep 5, 9:18 AM CDT | TSTM WND DMG | Coffeen, IL | POWER LINES AND TREES DOWN IN COFFEEN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 1.6 hours before the alert went out and 123 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
- 1271 J/kg
- Mixed-layer CIN
- -188 J/kg
- Mixed-layer LCL
- 1037 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
896
WUUS53 KLSX 051338
SVRLSX
ILC051-135-051415-
/O.NEW.KLSX.SV.W.0259.120905T1338Z-120905T1415Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
838 AM CDT WED SEP 5 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS...
MONTGOMERY COUNTY IN SOUTH CENTRAL ILLINOIS...
* UNTIL 915 AM CDT
* AT 833 AM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM MORRISONVILLE TO RAYMOND TO LITCHFIELD...AND
MOVING SOUTHEAST AT 40 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...PUBLIC REPORTED POWER POLE SNAPPED NEAR NILWOOD AT AROUND
820 AM.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
* LOCATIONS IMPACTED INCLUDE...
NOKOMIS...HILLSBORO...WITT...TAYLOR SPRINGS...COFFEEN...VAN
BURENSBURG...RAMSEY...WRIGHTS CORNER...BUTLER...WENONAH...
COALTON...OHLMAN...IRVING...CHAPMAN...FILLMORE...BINGHAM...BAYLE
CITY AND SHAFTER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
LARGE HAIL...DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THESE STORMS. MOVE INDOORS IMMEDIATELY. LIGHTNING
KILLS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.
&&
LAT...LON 3908 8891 3895 8920 3898 8926 3903 8925
3902 8934 3916 8959 3929 8950 3935 8952
3936 8951 3939 8954 3940 8953 3936 8951
3935 8914 3922 8913 3922 8881 3921 8880
TIME...MOT...LOC 1337Z 299DEG 36KT 3940 8933 3930 8946
3921 8961
HAIL...<.75IN
WIND...60 MPH
$$
BROWNING1 follow-up statement
943
WWUS53 KLSX 051352
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
852 AM CDT WED SEP 5 2012
ILC051-135-051415-
/O.CON.KLSX.SV.W.0259.000000T0000Z-120905T1415Z/
MONTGOMERY IL-FAYETTE IL-
852 AM CDT WED SEP 5 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
FAYETTE AND MONTGOMERY COUNTIES UNTIL 915 AM CDT...
AT 847 AM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM 5 MILES NORTHEAST OF NOKOMIS TO WITT TO
HILLSBORO...AND MOVING SOUTHEAST AT 40 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
LOCATIONS IMPACTED INCLUDE...
COFFEEN...VAN BURENSBURG...RAMSEY...WRIGHTS CORNER...CHAPMAN...
FILLMORE...BINGHAM...BAYLE CITY AND SHAFTER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
LARGE HAIL...DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THESE STORMS. MOVE INDOORS IMMEDIATELY. LIGHTNING
KILLS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.
&&
LAT...LON 3908 8891 3895 8920 3898 8926 3903 8925
3902 8934 3916 8959 3929 8950 3935 8952
3936 8951 3939 8954 3940 8953 3936 8951
3935 8914 3922 8913 3922 8881 3921 8880
TIME...MOT...LOC 1352Z 299DEG 36KT 3933 8916 3923 8929
3914 8944
HAIL...<.75IN
WIND...60 MPH
$$
BROWNINGThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 3:07 AM CDT | Heat Advisory | LSX | Madison, Monroe, Randolph, Saint Clair | 12 hr |
| Sep 5, 6:36 AM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Pike | 30 min |
| Sep 5, 7:56 AM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin, Montgomery | 64 min |
| Sep 5, 9:08 AM CDT | Tornado Warning | LSX | Fayette, Montgomery | 37 min |
| Sep 5, 9:40 AM CDT | Severe Thunderstorm Warning | LSX | Fayette | 50 min |
| Sep 5, 10:00 AM CDT | Severe Thunderstorm Warning | LSX | Clinton, Fayette, Marion | 48 min |
| Sep 5, 10:23 AM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 32 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; radar from the NEXRAD Level II archive.