Alert archive / Missouri / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 324, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Sep 25, 2012, 7:05 PM CDT for Lincoln County, Saint Charles County, Warren County, Missouri; Calhoun County, Illinois. It was in force for 40 min. 1 report 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 25, 2012, 7:05 PM CDT (00:05 UTC)
- Expired
- Sep 25, 2012, 7:45 PM CDT
- In force
- 40 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Calhoun County, IL, Lincoln County, MO, Saint Charles County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 29 km from the middle of the area, began a volume at 00:09 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 25, 7:15 PM CDT | HAIL 0.88 | Moscow Mills, MO |
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 |
|---|---|---|---|
| Sep 25, 5:05 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 0.1 hours before the alert went out and 221 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
- 1015 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 957 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 145 m²/s²
- 0-3 km storm-relative helicity
- 222 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 5.3
The text
As transmitted, in the capitals the NWS used until 2016.
627
WUUS53 KLSX 260005
SVRLSX
ILC013-MOC113-183-219-260045-
/O.NEW.KLSX.SV.W.0324.120926T0005Z-120926T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
705 PM CDT TUE SEP 25 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CALHOUN COUNTY IN SOUTHWEST ILLINOIS...
SOUTHERN LINCOLN COUNTY IN EAST CENTRAL MISSOURI...
NORTHWESTERN ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...
NORTHEASTERN WARREN COUNTY IN EAST CENTRAL MISSOURI...
* UNTIL 745 PM CDT
* AT 704 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR WRIGHT
CITY...AND MOVING EAST AT 30 MPH.
HAZARD...PING PONG BALL SIZE HAIL AND 60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.
* LOCATIONS IMPACTED INCLUDE...
TROY...WENTZVILLE...LAKE ST. LOUIS...ST. PAUL...O'FALLON...ST.
PETERS...ST. CHARLES...MOSCOW MILLS...WINFIELD...FORISTELL...FLINT
HILL...OLD MONROE...FOLEY...BEECHVILLE...BRUSSELS...GOLDEN EAGLE...
MEPPEN...DEER PLAIN...BATCHTOWN AND KAMPVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3907 9058 3905 9059 3903 9057 3899 9057
3896 9053 3881 9046 3877 9048 3876 9113
3893 9117 3915 9062
TIME...MOT...LOC 0005Z 258DEG 26KT 3886 9103
HAIL...1.50IN
WIND...60 MPH
$$
BRITT3 follow-up statements
267
WWUS53 KLSX 260022
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
722 PM CDT TUE SEP 25 2012
MOC219-260030-
/O.CAN.KLSX.SV.W.0324.000000T0000Z-120926T0045Z/
WARREN MO-
722 PM CDT TUE SEP 25 2012
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WARREN COUNTY IS
CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA. ADDITIONAL STRONG THUNDERSTORMS ARE POSSIBLE AND A
SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 11 PM CDT.
LAT...LON 3907 9058 3905 9059 3903 9057 3902 9058
3899 9057 3896 9053 3881 9046 3877 9048
3881 9096 3901 9097 3915 9062
TIME...MOT...LOC 0020Z 258DEG 26KT 3891 9080 3885 9093
$$
ILC013-MOC113-183-260045-
/O.CON.KLSX.SV.W.0324.000000T0000Z-120926T0045Z/
CALHOUN IL-LINCOLN MO-ST. CHARLES MO-
722 PM CDT TUE SEP 25 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
ST. CHARLES...SOUTHEASTERN LINCOLN AND CALHOUN COUNTIES UNTIL 745 PM
CDT...
AT 718 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM 6 MILES NORTHWEST OF ST. PAUL TO WENTZVILLE...
AND MOVING EAST AT 30 MPH.
HAZARD...QUARTER 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...
WENTZVILLE...ST. PAUL...ST. CHARLES...WINFIELD...OLD MONROE...FLINT
HILL...FOLEY...BEECHVILLE...BATCHTOWN...MEPPEN...BRUSSELS...GOLDEN
EAGLE...KAMPVILLE AND DEER PLAIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3907 9058 3905 9059 3903 9057 3902 9058
3899 9057 3896 9053 3881 9046 3877 9048
3881 9096 3901 9097 3915 9062
TIME...MOT...LOC 0020Z 258DEG 26KT 3891 9080 3885 9093
HAIL...1.00IN
WIND...60 MPH
$$
BRITT460
WWUS53 KLSX 260029 CCA
SVSLSX
SEVERE WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE ST LOUIS MO
722 PM CDT TUE SEP 25 2012
MOC219-260032-
/O.COR.KLSX.SV.W.0324.000000T0000Z-120926T0045Z/
WARREN MO-
722 PM CDT TUE SEP 25 2012
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WARREN COUNTY IS
CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA. ADDITIONAL STRONG THUNDERSTORMS ARE POSSIBLE AND A
SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 11 PM CDT.
LAT...LON 3907 9058 3905 9059 3903 9057 3902 9058
3899 9057 3896 9053 3881 9046 3877 9048
3881 9096 3901 9097 3915 9062
TIME...MOT...LOC 0022Z 258DEG 26KT 3891 9078 3885 9091
$$
ILC013-MOC113-183-260045-
/O.COR.KLSX.SV.W.0324.000000T0000Z-120926T0045Z/
CALHOUN IL-LINCOLN MO-ST. CHARLES MO-
722 PM CDT TUE SEP 25 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
ST. CHARLES...SOUTHEASTERN LINCOLN AND CALHOUN COUNTIES UNTIL 745 PM
CDT...
AT 718 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM 6 MILES NORTHWEST OF ST. PAUL TO WENTZVILLE...
AND MOVING EAST AT 30 MPH.
HAZARD...QUARTER 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...
WENTZVILLE...ST. PAUL...ST. CHARLES...WINFIELD...OLD MONROE...FLINT
HILL...FOLEY...BEECHVILLE...BATCHTOWN...MEPPEN...BRUSSELS...GOLDEN
EAGLE...KAMPVILLE AND DEER PLAIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3907 9058 3905 9059 3903 9057 3902 9058
3899 9057 3896 9053 3881 9046 3877 9048
3881 9096 3901 9097 3915 9062
TIME...MOT...LOC 0022Z 258DEG 26KT 3891 9078 3885 9091
HAIL...1.00IN
WIND...60 MPH
$$
BRITT796
WWUS53 KLSX 260043
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
743 PM CDT TUE SEP 25 2012
ILC013-MOC113-183-260052-
/O.EXP.KLSX.SV.W.0324.000000T0000Z-120926T0045Z/
CALHOUN IL-LINCOLN MO-ST. CHARLES MO-
743 PM CDT TUE SEP 25 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ST. CHARLES...
SOUTHEASTERN LINCOLN AND CALHOUN COUNTIES WILL EXPIRE AT 745 PM
CDT...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT FOR ST. CHARLES COUNTY UNTIL 11
PM CDT.
LAT...LON 3907 9058 3905 9059 3903 9057 3902 9058
3899 9057 3896 9053 3881 9046 3877 9048
3881 9096 3901 9097 3915 9062
TIME...MOT...LOC 0042Z 258DEG 26KT 3894 9060 3888 9073
$$
BRITTThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 25, 7:41 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Louis | 49 min |
| Sep 25, 8:13 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 47 min |
| Sep 25, 7:29 PM CDT | Severe Thunderstorm Warning | LSX | Marion, Washington | 46 min |
| Sep 25, 8:11 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Madison, Saint Clair | 34 min |
| Sep 25, 8:38 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette, Marion | 52 min |
| Sep 25, 8:59 PM CDT | Flash Flood Warning | LSX | Clinton, Washington | 6 hr |
| Sep 26, 3:01 AM CDT | Flash Flood Warning | LSX | Clinton, Marion, Washington | 6 hr |
| Sep 26, 9:08 AM CDT | Areal Flood Warning | LSX | Clinton, Marion, Washington | 12 hr |
Nearby
Severe Thunderstorm Warnings in Missouri, 2012Severe 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.