Alert archive / Missouri / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 320, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Sep 25, 2012, 6:45 PM CDT for Franklin County, Gasconade County, Missouri. It was in force for 45 min. 2 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, 6:45 PM CDT (23:45 UTC)
- Expired
- Sep 25, 2012, 7:30 PM CDT
- In force
- 45 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Franklin County, MO, Gasconade County, MO
The radar
The St Louis radar (KLSX), 64 km from the middle of the area, began a volume at 23:46 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, 6:58 PM CDT | HAIL 1 | Owensville, MO | MOSTLY DIME TO NICKEL SIZE HAIL WITH A FEW THE SIZE OF QUARTERS. |
| Sep 25, 7:12 PM CDT | HAIL 1.75 | 5 E Gerald, MO | ALSO REPORTED 1.5 INCHES OF RAIN AND A 30 MPH WIND GUST. |
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
Springfield, MO (KSGF), launched 12:00Z, 11.8 hours before the alert went out and 278 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
- 735 J/kg
- Mixed-layer CIN
- -246 J/kg
- Mixed-layer LCL
- 1553 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 252 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
919
WUUS53 KLSX 252345
SVRLSX
MOC071-073-260030-
/O.NEW.KLSX.SV.W.0320.120925T2345Z-120926T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
645 PM CDT TUE SEP 25 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
GASCONADE COUNTY IN EAST CENTRAL MISSOURI...
* UNTIL 730 PM CDT
* AT 639 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MOUNT
STERLING...AND MOVING EAST AT 35 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...
NEW HAVEN...DRAKE...ROSEBUD...SWISS...GERALD...BEAUFORT...LESLIE...
NOSER MILL AND LYON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3857 9164 3867 9127 3862 9122 3855 9108
3836 9112 3822 9165
TIME...MOT...LOC 2345Z 253DEG 32KT 3844 9153
HAIL...1.00IN
WIND...60 MPH
$$
TILLY3 follow-up statements
864
WWUS53 KLSX 260003
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
703 PM CDT TUE SEP 25 2012
MOC071-073-260030-
/O.CON.KLSX.SV.W.0320.000000T0000Z-120926T0030Z/
FRANKLIN MO-GASCONADE MO-
703 PM CDT TUE SEP 25 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR GASCONADE AND
NORTHWESTERN FRANKLIN COUNTIES UNTIL 730 PM CDT...
AT 659 PM CDT...A LINE OF SEVERE THUNDERSTORMS EXTENDED FROM NEAR
GERALD TO OWENSVILLE...AND IS MOVING EAST AT 40 MPH.
HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS REPORTED QUARTER SIZED HAIL IN
OWENSVILLE.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.
LOCATIONS IMPACTED INCLUDE...
NEW HAVEN...BEAUFORT...LESLIE...NOSER MILL AND LYON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3857 9164 3867 9127 3862 9122 3855 9108
3836 9112 3822 9165
TIME...MOT...LOC 0001Z 249DEG 33KT 3843 9131
HAIL...1.00IN
WIND...60 MPH
$$
TILLY912
WWUS53 KLSX 260020
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
720 PM CDT TUE SEP 25 2012
MOC073-260029-
/O.CAN.KLSX.SV.W.0320.000000T0000Z-120926T0030Z/
GASCONADE MO-
720 PM CDT TUE SEP 25 2012
...THE SEVERE THUNDERSTORM WARNING FOR GASCONADE COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 3858 9114 3855 9108 3836 9112 3829 9136
3830 9136 3852 9137
TIME...MOT...LOC 0019Z 250DEG 36KT 3844 9114
$$
MOC071-260030-
/O.CON.KLSX.SV.W.0320.000000T0000Z-120926T0030Z/
FRANKLIN MO-
720 PM CDT TUE SEP 25 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN
FRANKLIN COUNTY UNTIL 730 PM CDT...
AT 718 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LESLIE...AND
MOVING EAST AT 40 MPH.
HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.
LOCATIONS IMPACTED INCLUDE...
BEAUFORT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3858 9114 3855 9108 3836 9112 3829 9136
3830 9136 3852 9137
TIME...MOT...LOC 0019Z 250DEG 36KT 3844 9114
HAIL...1.00IN
WIND...60 MPH
$$
TILLY652
WWUS53 KLSX 260028
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
728 PM CDT TUE SEP 25 2012
MOC071-260036-
/O.EXP.KLSX.SV.W.0320.000000T0000Z-120926T0030Z/
FRANKLIN MO-
728 PM CDT TUE SEP 25 2012
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN FRANKLIN COUNTY WILL
EXPIRE AT 730 PM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA. HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS
THUNDERSTORM.
IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN ST LOUIS.
LAT...LON 3858 9114 3855 9108 3836 9112 3829 9136
3830 9136 3852 9137
TIME...MOT...LOC 0026Z 261DEG 34KT 3843 9107
$$
TILLYThe 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, 5:48 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Louis, City of Saint Louis | 42 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, 6:55 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.