Alert archive / Missouri / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 314, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Sep 25, 2012, 5:48 PM CDT for 4 counties in Missouri. It was in force for 42 min. 8 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 25, 2012, 5:48 PM CDT (22:48 UTC)
- Expired
- Sep 25, 2012, 6:30 PM CDT
- In force
- 42 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties City of Saint Louis, MO, Franklin County, MO, Jefferson County, MO, Saint Louis County, MO
The radar
The St Louis radar (KLSX), 29 km from the middle of the area, began a volume at 22:49 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, 6:02 PM CDT | TSTM WND DMG | Affton, MO | LARGE TREE LIMBS DOWN AND A WALL CLOUD WITH LITTLE DISCERNABLE ROTATION. GUST ESTIMATE OF 60 MPH. |
| Sep 25, 6:02 PM CDT | TSTM WND GST 50 | Fenton, MO | ON SALEEN RD |
| Sep 25, 6:02 PM CDT | TSTM WND GST 55 | Mehlville, MO | ONE AND ONE HALF INCH LIMB SNAPPED OFF PINE TREE |
| Sep 25, 6:17 PM CDT | HAIL 0.7 | Kirkwood, MO | AT BIG BEND AND LOCKWOOD |
| Sep 25, 6:20 PM CDT | HAIL 1 | Cedar Hill, MO | MARBLE TO QUARTER SIZE |
| Sep 25, 6:20 PM CDT | HAIL 1 | House Springs, MO | STILL HAILING AT TIME OF REPORT AT 625 PM. |
| Sep 25, 6:20 PM CDT | HAIL 1.5 | 2 Ese Cedar Hill, MO | |
| Sep 25, 6:26 PM CDT | HAIL 0.25 | Cedar Hill, 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 12:00Z, 10.8 hours before the alert went out and 231 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.
953
WUUS53 KLSX 252248
SVRLSX
MOC071-099-189-510-252330-
/O.NEW.KLSX.SV.W.0314.120925T2248Z-120925T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
548 PM CDT TUE SEP 25 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
NORTHERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI...
ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI...
ST. LOUIS CITY IN EAST CENTRAL MISSOURI...
* UNTIL 630 PM CDT
* AT 544 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM CLARKSON VALLEY TO DITTMER...AND MOVING EAST AT
45 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...
CEDAR HILL...ELLISVILLE...BALLWIN...BYRNES MILL...MANCHESTER...HIGH
RIDGE...TOWN AND COUNTRY...VALLEY PARK...MURPHY...CREVE COEUR...DES
PERES...FENTON...ANTONIA...FRONTENAC...ST. ANN...KIRKWOOD...SUNSET
HILLS...OLIVETTE...OVERLAND AND WARSON WOODS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3878 9014 3873 9021 3870 9021 3868 9019
3842 9030 3839 9034 3835 9037 3830 9037
3824 9079 3863 9074 3868 9059 3868 9055
3870 9053 3883 9013
TIME...MOT...LOC 2248Z 255DEG 39KT 3866 9060 3839 9067
HAIL...1.00IN
WIND...60 MPH
$$
BRITT3 follow-up statements
083
WWUS53 KLSX 252300
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
600 PM CDT TUE SEP 25 2012
MOC071-099-189-510-252330-
/O.CON.KLSX.SV.W.0314.000000T0000Z-120925T2330Z/
FRANKLIN MO-JEFFERSON MO-ST. LOUIS MO-ST. LOUIS CITY MO-
600 PM CDT TUE SEP 25 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR ST. LOUIS
CITY...ST. LOUIS...NORTHERN JEFFERSON AND NORTHEASTERN FRANKLIN
COUNTIES UNTIL 630 PM CDT...
AT 558 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM CREVE COEUR TO VALLEY PARK TO HIGH RIDGE TO
DITTMER...AND MOVING NORTHEAST AT 45 MPH.
HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.
LOCATIONS IMPACTED INCLUDE...
MURPHY...DES PERES...FENTON...CEDAR HILL...CREVE COEUR...KIRKWOOD...
FRONTENAC...SUNSET HILLS...WARSON WOODS...OAKLAND...GLENDALE...
LADUE...CRESTWOOD...ST. ANN...OLIVETTE...WEBSTER GROVES...OVERLAND...
BRENTWOOD...WOODSON TERRACE AND LAMBERT FIELD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ST
LOUIS.
&&
LAT...LON 3878 9014 3873 9021 3870 9021 3868 9019
3842 9030 3839 9034 3835 9037 3830 9037
3824 9079 3863 9074 3868 9059 3868 9055
3870 9053 3883 9013
TIME...MOT...LOC 2259Z 247DEG 40KT 3867 9047 3857 9045
3846 9052 3834 9069
HAIL...1.00IN
WIND...60 MPH
$$
BRITT640
WWUS53 KLSX 252313
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
613 PM CDT TUE SEP 25 2012
MOC071-099-189-510-252330-
/O.CON.KLSX.SV.W.0314.000000T0000Z-120925T2330Z/
FRANKLIN MO-JEFFERSON MO-ST. LOUIS MO-ST. LOUIS CITY MO-
613 PM CDT TUE SEP 25 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR ST. LOUIS
CITY...EASTERN ST. LOUIS...NORTHERN JEFFERSON AND EAST CENTRAL
FRANKLIN COUNTIES UNTIL 630 PM CDT...
AT 607 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM UNIVERSITY CITY TO LEMAY TO ARNOLD TO DITTMER...
AND MOVING NORTHEAST AT 45 MPH.
HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS. LARGE LIMBS WERE REPORTED
DOWN IN AFFTON WITH THIS STORM. PENNY SIZE HAIL HAS ALSO
BEEN REPORTED IN HOUSE SPRINGS.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.
LOCATIONS IMPACTED INCLUDE...
NORTHWOODS...FERGUSON...ST. LOUIS...JENNINGS...DELLWOOD...ARNOLD...
BELLEFONTAINE NEIGHBORS...RIVERVIEW...SPANISH LAKE...OAKVILLE...
ANTONIA...BARNHART...OTTO AND KIMMSWICK.
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 3879 9014 3873 9021 3868 9019 3842 9030
3835 9037 3830 9037 3824 9079 3841 9076
3850 9053 3870 9053 3883 9014
TIME...MOT...LOC 2311Z 247DEG 40KT 3869 9029 3853 9022
3844 9035 3832 9066
HAIL...1.00IN
WIND...60 MPH
$$
BRITT542
WWUS53 KLSX 252331
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
631 PM CDT TUE SEP 25 2012
MOC071-099-189-510-252340-
/O.EXP.KLSX.SV.W.0314.000000T0000Z-120925T2330Z/
FRANKLIN MO-JEFFERSON MO-ST. LOUIS MO-ST. LOUIS CITY MO-
631 PM CDT TUE SEP 25 2012
...THE SEVERE THUNDERSTORM WARNING FOR ST. LOUIS CITY...EASTERN ST.
LOUIS...NORTHERN JEFFERSON AND EAST CENTRAL FRANKLIN COUNTIES HAS
EXPIRED...
A NEW SEVERE THUNDERSTORM WARNING HAS BEEN ISSUED FOR SOUTHERN ST.
LOUIS CITY...SOUTHERN ST. LOUIS COUNTY AND NORTHERN JEFFERSON COUNTY
UNTIL 7 PM CDT.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 11 PM.
LAT...LON 3879 9014 3873 9021 3868 9019 3842 9030
3835 9037 3830 9037 3824 9079 3841 9076
3850 9053 3870 9053 3883 9014
TIME...MOT...LOC 2330Z 247DEG 40KT 3877 9004 3861 8997
3852 9010 3840 9041
$$
BRITTThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 25, 4:31 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Warren | 44 min |
| Sep 25, 5:09 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis | 51 min |
| Sep 25, 6:16 PM CDT | Severe Thunderstorm Warning | LSX | Callaway, Cole, Osage | 44 min |
| Sep 25, 6:22 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Louis, City of Saint Louis | 38 min |
| Sep 25, 6:45 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Gasconade | 45 min |
| Sep 25, 6:55 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Louis | 50 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 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.