Alert archive / Missouri / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 332, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Oct 17, 2012, 4:54 PM CDT for 7 counties in Missouri; Calhoun County, Jersey County, Illinois. It was in force for 51 min. 9 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
- Oct 17, 2012, 4:54 PM CDT (21:54 UTC)
- Expired
- Oct 17, 2012, 5:45 PM CDT
- In force
- 51 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Calhoun County, IL, Jersey County, IL, Crawford County, MO, Franklin County, MO, Jefferson County, MO, Lincoln County, MO, Saint Charles County, MO, Saint Louis County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 40 km from the middle of the area, began a volume at 21:53 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 |
|---|---|---|---|
| Oct 17, 4:55 PM CDT | TSTM WND GST 61 | Moscow Mills, MO | |
| Oct 17, 4:57 PM CDT | TSTM WND GST 42 | Gray Summit, MO | HEAVY RAIN WITH GUSTS ESTIMATED TO 42 MPH. |
| Oct 17, 4:58 PM CDT | TSTM WND GST 40 | 3 N Flint Hill, MO | HEAVY RAIN WITH WIND GUST TO 40 MPH. |
| Oct 17, 5:05 PM CDT | TSTM WND DMG | 2 S Old Monroe, MO | WINDS ESTIMATED TO 60 MPH WITH 3-INCH LIMBS DOWN. |
| Oct 17, 5:10 PM CDT | TSTM WND DMG | 2 S Old Monroe, MO | WINDS ESTIMATED TO 60 MPH WITH 3-INCH LIMBS DOWN. |
| Oct 17, 5:21 PM CDT | TSTM WND GST 45 | 5 N St. Charles, MO | WINDS OF 40-45 MPH WITH SQUALL LINE. |
| Oct 17, 5:23 PM CDT | TSTM WND DMG | 3 Wnw Creve Coeur, MO | TREES DOWN NEAR FEE FEE ROAD AND OLIVE BLVD. |
| Oct 17, 5:23 PM CDT | TSTM WND GST 60 | 3 Ssw Orchard Farms, MO | |
| Oct 17, 5:30 PM CDT | TSTM WND DMG | Maryland Heights, MO | TREES DOWN NEAR CC AND OLIVE IN THE WESTPORT AREA. |
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 |
|---|---|---|---|
| Oct 17, 1:58 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 9.9 hours before the alert went out and 280 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1209 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 158 m²/s²
- 0-3 km storm-relative helicity
- 269 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
031
WUUS53 KLSX 172154
SVRLSX
ILC013-083-MOC055-071-099-113-183-189-221-172245-
/O.NEW.KLSX.SV.W.0332.121017T2154Z-121017T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
454 PM CDT WED OCT 17 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN CALHOUN COUNTY IN SOUTHWEST ILLINOIS...
SOUTHWESTERN JERSEY COUNTY IN SOUTHWEST ILLINOIS...
EAST CENTRAL CRAWFORD COUNTY IN EAST CENTRAL MISSOURI...
EASTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
WESTERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI...
SOUTHEASTERN LINCOLN COUNTY IN EAST CENTRAL MISSOURI...
ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...
WESTERN ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI...
NORTHERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI...
* UNTIL 545 PM CDT
* AT 449 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM MOSCOW MILLS TO VILLA RIDGE TO 6 MILES
SOUTHWEST OF ANTHONIES MILL...AND MOVING EAST AT 40 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...SPOTTERS REPORTED TREES DOWN IN FORISTELL NEAR I-70.
ADDITIONAL DAMAGE WAS REPORTED WHEN THESE STORMS MOVED
THROUGH BLAND AND OWENSVILLE.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
* LOCATIONS IMPACTED INCLUDE...
GRAY SUMMIT...PACIFIC...ST. PAUL...DARDENNE PRAIRIE...O'FALLON...
WILDWOOD...COTTLEVILLE...WELDON SPRING...EUREKA...ST. PETERS...
CLARKSON VALLEY...ELLISVILLE...CHESTERFIELD...CEDAR HILL...
POTOSI...BALLWIN...BYRNES MILL...HIGH RIDGE...MANCHESTER AND ST.
CHARLES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
INTENSE SQUALL LINES CAN SOMETIMES PRODUCE BRIEF TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH NOT IMMEDIATELY
LIKELY...IT IS BEST TO MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF A BUILDING. THIS STORM MAY CAUSE SERIOUS INJURY AND SIGNIFICANT
PROPERTY DAMAGE.
&&
LAT...LON 3790 9128 3796 9126 3795 9099 3886 9075
3887 9101 3902 9102 3902 9043 3849 9047
3789 9070
TIME...MOT...LOC 2153Z 260DEG 36KT 3894 9089 3844 9088
3801 9110
HAIL...<.75IN
WIND...60 MPH
$$
KANOFSKY3 follow-up statements
919
WWUS53 KLSX 172211
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
511 PM CDT WED OCT 17 2012
ILC013-083-MOC055-071-099-113-183-189-221-172245-
/O.CON.KLSX.SV.W.0332.000000T0000Z-121017T2245Z/
JERSEY IL-CALHOUN IL-CRAWFORD MO-FRANKLIN MO-JEFFERSON MO-LINCOLN MO-
ST. CHARLES MO-ST. LOUIS MO-WASHINGTON MO-
511 PM CDT WED OCT 17 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
WASHINGTON...WESTERN ST. LOUIS...CENTRAL ST. CHARLES...SOUTHEASTERN
LINCOLN...WESTERN JEFFERSON...EASTERN FRANKLIN...EAST CENTRAL
CRAWFORD...SOUTHERN CALHOUN AND SOUTHWESTERN JERSEY COUNTIES UNTIL
545 PM CDT...
AT 506 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM WINFIELD TO PACIFIC TO 9 MILES SOUTHEAST OF
ANTHONIES MILL...AND MOVING EAST AT 40 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS REPORTED DAMAGE WHEN THESE STORMS
MOVED THROUGH WARREN COUNTY...FORISTELL...BLAND...AND
OWENSVILLE.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
LOCATIONS IMPACTED INCLUDE...
WILDWOOD...COTTLEVILLE...WELDON SPRING...EUREKA...ST. PETERS...
CLARKSON VALLEY...ELLISVILLE...CHESTERFIELD...CEDAR HILL...POTOSI...
BALLWIN...BYRNES MILL...HIGH RIDGE...MANCHESTER...ST. CHARLES...
MURPHY...VALLEY PARK...MARYLAND HEIGHTS...TOWN AND COUNTRY AND
DITTMER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
INTENSE SQUALL LINES CAN SOMETIMES PRODUCE BRIEF TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH NOT IMMEDIATELY
LIKELY...IT IS BEST TO MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF A BUILDING. THIS STORM MAY CAUSE SERIOUS INJURY AND SIGNIFICANT
PROPERTY DAMAGE.
&&
LAT...LON 3790 9128 3796 9126 3795 9099 3886 9075
3887 9080 3902 9087 3902 9043 3849 9047
3789 9070
TIME...MOT...LOC 2210Z 260DEG 36KT 3897 9067 3847 9067
3804 9089
HAIL...<.75IN
WIND...60 MPH
$$
KANOFSKY144
WWUS53 KLSX 172230
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
530 PM CDT WED OCT 17 2012
MOC055-113-172238-
/O.CAN.KLSX.SV.W.0332.000000T0000Z-121017T2245Z/
CRAWFORD MO-LINCOLN MO-
530 PM CDT WED OCT 17 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LINCOLN AND EAST
CENTRAL CRAWFORD COUNTIES IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.
LAT...LON 3790 9109 3796 9106 3796 9099 3814 9094
3842 9071 3887 9061 3902 9066 3902 9043
3849 9047 3789 9070
TIME...MOT...LOC 2228Z 260DEG 36KT 3900 9044 3850 9044
3807 9067
$$
ILC013-083-MOC071-099-183-189-221-172245-
/O.CON.KLSX.SV.W.0332.000000T0000Z-121017T2245Z/
JERSEY IL-CALHOUN IL-FRANKLIN MO-JEFFERSON MO-ST. CHARLES MO-
ST. LOUIS MO-WASHINGTON MO-
530 PM CDT WED OCT 17 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
WASHINGTON...WESTERN ST. LOUIS...EASTERN ST. CHARLES...WESTERN
JEFFERSON...SOUTHEASTERN FRANKLIN...SOUTHERN CALHOUN AND SOUTHWESTERN
JERSEY COUNTIES UNTIL 545 PM CDT...
AT 523 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM GRAFTON TO MURPHY TO OLD MINES...AND MOVING EAST
AT 40 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS REPORTED DAMAGE WHEN THESE STORMS
MOVED THROUGH WARREN COUNTY...FORISTELL...BLAND...AND
OWENSVILLE.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OF EXTREME EASTERN WASHINGTON AND SOUTHERN
JEFFERSON COUNTIES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
INTENSE SQUALL LINES CAN SOMETIMES PRODUCE BRIEF TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH NOT IMMEDIATELY
LIKELY...IT IS BEST TO MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF A BUILDING. THIS STORM MAY CAUSE SERIOUS INJURY AND SIGNIFICANT
PROPERTY DAMAGE.
&&
LAT...LON 3790 9109 3796 9106 3796 9099 3814 9094
3842 9071 3887 9061 3902 9066 3902 9043
3849 9047 3789 9070
TIME...MOT...LOC 2228Z 260DEG 36KT 3900 9044 3850 9044
3807 9067
HAIL...<.75IN
WIND...60 MPH
$$
KANOFSKY805
WWUS53 KLSX 172242
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
542 PM CDT WED OCT 17 2012
ILC013-083-MOC071-099-183-189-221-172252-
/O.EXP.KLSX.SV.W.0332.000000T0000Z-121017T2245Z/
JERSEY IL-CALHOUN IL-FRANKLIN MO-JEFFERSON MO-ST. CHARLES MO-
ST. LOUIS MO-WASHINGTON MO-
542 PM CDT WED OCT 17 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WASHINGTON...WESTERN
ST. LOUIS...EASTERN ST. CHARLES...WESTERN JEFFERSON...SOUTHEASTERN
FRANKLIN...SOUTHERN CALHOUN AND SOUTHWESTERN JERSEY COUNTIES WILL
EXPIRE AT 545 PM CDT...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 8 PM CDT.
LAT...LON 3790 9109 3796 9106 3796 9099 3814 9094
3842 9071 3887 9061 3902 9066 3902 9043
3849 9047 3789 9070
TIME...MOT...LOC 2242Z 260DEG 36KT 3902 9026 3852 9026
3809 9050
$$
KANOFSKYThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 17, 4:03 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade, Montgomery, Osage, Warren | 42 min |
| Oct 17, 4:24 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Saint Charles, Warren, Washington | 51 min |
| Oct 17, 4:58 PM CDT | Tornado Warning | LSX | Lincoln, Saint Charles | 32 min |
| Oct 17, 5:06 PM CDT | Tornado Warning | LSX | Saint Charles | 24 min |
| Oct 17, 5:23 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Charles, Sainte Genevieve, Saint Francois, Saint Louis, City of Saint Louis | 52 min |
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.