Alert archive / Missouri / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 169, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 4, 2012, 4:08 PM CDT for 4 counties in Missouri. It was in force for 37 min. 32 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
- Jun 4, 2012, 4:08 PM CDT (21:08 UTC)
- Expired
- Jun 4, 2012, 4:45 PM CDT
- In force
- 37 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Franklin County, MO, Jefferson County, MO, Saint Charles County, MO, Saint Louis County, MO
The radar
The St Louis radar (KLSX), 17 km from the middle of the area, began a volume at 21:09 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 |
|---|---|---|---|
| Jun 4, 4:08 PM CDT | HAIL 0.88 | 1 E O'Fallon, MO | REPORTED AT INTERSECTION OF INTERSTATE 70 AND T.R. HIGHES BOULEVARD |
| Jun 4, 4:08 PM CDT | HAIL 0.88 | 2 E O'Fallon, MO | |
| Jun 4, 4:09 PM CDT | HAIL 1 | 3 Wnw St. Peters, MO | SPOTTER LOCATED NEAR HIGHWAYS 70 AND 79. HAIL COVERING THE GROUND |
| Jun 4, 4:10 PM CDT | HAIL 0.25 | St. Peters, MO | |
| Jun 4, 4:10 PM CDT | HAIL 1 | St. Peters, MO | |
| Jun 4, 4:11 PM CDT | HAIL 0.7 | 6 Nne Cottleville, MO | |
| Jun 4, 4:12 PM CDT | TSTM WND DMG | St. Charles, MO | POWER LINES DOWNED |
| Jun 4, 4:12 PM CDT | HAIL 0.5 | St. Peters, MO | |
| Jun 4, 4:13 PM CDT | HAIL 0.75 | 2 Nnw Cottleville, MO | |
| Jun 4, 4:13 PM CDT | HAIL 0.88 | St. Charles, MO | ACCOMPANIED BY 35MPH ESTIMATED WINDS. |
| Jun 4, 4:15 PM CDT | HAIL 1 | Cottleville, MO | |
| Jun 4, 4:16 PM CDT | HAIL 0.5 | O'Fallon, MO | INTERSECTION OF N AND MID RIVERS MALL DRIVE. |
| Jun 4, 4:16 PM CDT | HAIL 1 | St. Peters, MO | AT SAINT CHARLES COMMUNITY COLLEGE |
| Jun 4, 4:20 PM CDT | HAIL 0.5 | Harvester, MO | |
| Jun 4, 4:21 PM CDT | HAIL 1.5 | Cottleville, MO | |
| Jun 4, 4:21 PM CDT | HAIL 1.5 | Weldon Spring, MO | INTERSECTION OF HIGHWAY 94 AND OFALLON ROAD. |
| Jun 4, 4:23 PM CDT | HAIL 1 | St. Peters, MO | |
| Jun 4, 4:24 PM CDT | TSTM WND DMG | Chesterfield, MO | SIX INCH DIAMETER TREE DOWN WITH POWER OUTAGES NEAR INTERSECTION OF CLARKSON AND CLAYTON. |
| Jun 4, 4:24 PM CDT | HAIL 0.7 | St. Charles, MO | MOSTLY PEAS BUT SOME AS LARGE AS DIMES. |
| Jun 4, 4:24 PM CDT | HAIL 1.5 | 1 Ne Weldon Spring, MO | |
| Jun 4, 4:29 PM CDT | HAIL 1.75 | Chesterfield, MO | MOSTLY QUARTERS BUT SOME UP TO GOLF BALLS NEAR INTERSECTION OF HIGHWAY 40 AND BOONES CROSSING. |
| Jun 4, 4:38 PM CDT | HAIL 0.5 | Chesterfield, MO | AT INTERSECTION OF CLARKSON AND KEHRS MILL ROAD. |
| Jun 4, 4:40 PM CDT | HAIL 1 | Chesterfield, MO | |
| Jun 4, 4:41 PM CDT | HAIL 0.7 | Ellisville, MO | AT INTERSECTION OF CLARKSON AND MANCHESTER ROADS. |
| Jun 4, 4:41 PM CDT | HAIL 1.5 | Chesterfield, MO | RELAYED FROM FOX-2 FROM ONE OF THEIR METEOROLOGISTS ON LOCATION |
| Jun 4, 4:43 PM CDT | HAIL 1.75 | Ballwin, MO | INTERSECTION OF BIG BEND AND NEW BALLWIN. |
| Jun 4, 4:45 PM CDT | HAIL 0 | 1 S Ballwin, MO | *** 1 INJ *** REPORT OF A GIRL WITH ARM AND HEAD INJURIES CAUSED BY FALLING HAIL NEAR INTERSECTION OF BIG BEND AND RIES ROAD. |
| Jun 4, 4:45 PM CDT | HAIL 0.88 | Ballwin, MO | BIG BEND AND HIGHWAY 141. |
| Jun 4, 4:45 PM CDT | HAIL 1 | Ellisville, MO | |
| Jun 4, 4:48 PM CDT | HAIL 1.5 | Ballwin, MO | |
| Jun 4, 4:50 PM CDT | HAIL 0.25 | Manchester, MO | NEAR INTERSECTION OF BAXTER AND MANCHESTER ROADS. |
| Jun 4, 4:50 PM CDT | HAIL 1 | Manchester, 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 |
|---|---|---|---|
| Jun 4, 3:25 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 9.1 hours before the alert went out and 244 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
- 1375 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 156 m²/s²
- 0-3 km storm-relative helicity
- 231 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
730
WUUS53 KLSX 042108
SVRLSX
MOC071-099-183-189-042145-
/O.NEW.KLSX.SV.W.0169.120604T2108Z-120604T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
408 PM CDT MON JUN 4 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...
CENTRAL ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...
WESTERN ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI...
* UNTIL 445 PM CDT
* AT 405 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
COTTLEVILLE...AND MOVING SOUTH AT 25 MPH.
HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS. NICKEL SIZE HAIL HAS BEEN
REPORTED JUST NORTHEAST OF ST. PETERS WITH THIS STORM.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.
* LOCATIONS IMPACTED INCLUDE...
WELDON SPRING...CHESTERFIELD...CLARKSON VALLEY...TOWN AND
COUNTRY...WILDWOOD...ELLISVILLE...BALLWIN...MANCHESTER...DES
PERES...VALLEY PARK...GRAY SUMMIT...EUREKA...HIGH RIDGE...MURPHY...
BYRNES MILL...FENTON...SUNSET HILLS...PACIFIC...ARNOLD AND
HARVESTER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3840 9035 3835 9084 3884 9080 3887 9055
TIME...MOT...LOC 2107Z 347DEG 22KT 3875 9065
HAIL...1.00IN
WIND...60 MPH
$$
BRITT3 follow-up statements
611
WWUS53 KLSX 042115
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
415 PM CDT MON JUN 4 2012
MOC071-099-183-189-042145-
/O.CON.KLSX.SV.W.0169.000000T0000Z-120604T2145Z/
FRANKLIN MO-JEFFERSON MO-ST. CHARLES MO-ST. LOUIS MO-
415 PM CDT MON JUN 4 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN ST.
LOUIS...CENTRAL ST. CHARLES...NORTHERN JEFFERSON AND NORTHEASTERN
FRANKLIN COUNTIES UNTIL 445 PM CDT...
AT 409 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR COTTLEVILLE...
AND MOVING SOUTH AT 25 MPH.
HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS. QUARTER SIZE HAIL HAS BEEN
REPORTED IN ST. PETERS AND COTTLEVILLE WITH THIS STORM.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.
LOCATIONS IMPACTED INCLUDE...
CHESTERFIELD...CLARKSON VALLEY...TOWN AND COUNTRY...WILDWOOD...
ELLISVILLE...BALLWIN...MANCHESTER...DES PERES...GRAY SUMMIT...VALLEY
PARK...EUREKA...HIGH RIDGE...MURPHY...BYRNES MILL...FENTON...SUNSET
HILLS...PACIFIC...ARNOLD...DEFIANCE AND HOUSE SPRINGS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP QUICKLY
FROM SEVERE THUNDERSTORMS. IF YOU SPOT A TORNADO GO AT ONCE INTO THE
BASEMENT OR SMALL CENTRAL ROOM IN A STURDY STRUCTURE.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3840 9035 3835 9084 3884 9080 3887 9055
TIME...MOT...LOC 2113Z 347DEG 22KT 3871 9064
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60 MPH
$$
BRITT555
WWUS53 KLSX 042128
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
428 PM CDT MON JUN 4 2012
MOC071-099-183-189-042145-
/O.CON.KLSX.SV.W.0169.000000T0000Z-120604T2145Z/
FRANKLIN MO-JEFFERSON MO-ST. CHARLES MO-ST. LOUIS MO-
428 PM CDT MON JUN 4 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN ST.
LOUIS...CENTRAL ST. CHARLES...NORTHERN JEFFERSON AND NORTHEASTERN
FRANKLIN COUNTIES UNTIL 445 PM CDT...
AT 424 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
CHESTERFIELD...AND MOVING SOUTH AT 20 MPH.
HAZARD...PING PONG BALL SIZE HAIL AND 60 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS. PING PONG SIZE HAIL HAS BEEN
REPORTED IN COTTLEVILLE AND WELDON SPRING WITH THIS STORM.
IMPACT...DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE DAMAGE...
WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.
LOCATIONS IMPACTED INCLUDE...
CHESTERFIELD...CLARKSON VALLEY...TOWN AND COUNTRY...WILDWOOD...
ELLISVILLE...BALLWIN...MANCHESTER...DES PERES...EUREKA...VALLEY
PARK...MURPHY...HIGH RIDGE...FENTON...BYRNES MILL...SUNSET HILLS...
PACIFIC...GRAY SUMMIT...ARNOLD...HOUSE SPRINGS AND MATSON.
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 3840 9035 3835 9084 3884 9080 3887 9055
TIME...MOT...LOC 2125Z 347DEG 18KT 3866 9062
HAIL...1.50IN
WIND...60 MPH
$$
BRITT152 WWUS53 KLSX 042141 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 441 PM CDT MON JUN 4 2012 MOC071-099-183-189-042150- /O.EXP.KLSX.SV.W.0169.000000T0000Z-120604T2145Z/ FRANKLIN MO-JEFFERSON MO-ST. CHARLES MO-ST. LOUIS MO- 441 PM CDT MON JUN 4 2012 ...THE SEVERE THUNDERSTORM WARNING FOR WESTERN ST. LOUIS...CENTRAL ST. CHARLES...NORTHERN JEFFERSON AND NORTHEASTERN FRANKLIN COUNTIES WILL EXPIRE AT 445 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. A NEW SEVERE THUNDERSTORM WARNING HAS BEEN ISSUED FOR WESTERN ST. LOUIS AND NORTHERN JEFFERSON COUNTIES UNTIL 530 PM. ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 10 PM CDT. LAT...LON 3840 9035 3835 9084 3884 9080 3887 9055 TIME...MOT...LOC 2140Z 347DEG 18KT 3859 9060 $$ BRITT
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 3:33 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles | 42 min |
| Jun 4, 4:38 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Louis | 52 min |
| Jun 4, 5:20 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 17 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.