Alert archive / Missouri / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 212, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 8, 2012, 4:24 PM CDT for Franklin County, Missouri. It was in force for 19 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 8, 2012, 4:24 PM CDT (21:24 UTC)
- Expired
- Jul 8, 2012, 4:43 PM CDT
- In force
- 19 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Franklin County, MO
The radar
The St Louis radar (KLSX), 30 km from the middle of the area, began a volume at 21:25 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.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 9.4 hours before the alert went out and 271 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
- 588 J/kg
- Mixed-layer CIN
- -359 J/kg
- Mixed-layer LCL
- 1252 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
983
WUUS53 KLSX 082124
SVRLSX
MOC071-082200-
/O.NEW.KLSX.SV.W.0212.120708T2124Z-120708T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
424 PM CDT SUN JUL 8 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
* UNTIL 500 PM CDT
* AT 421 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM UNION TO VILLA RIDGE TO DITTMER...AND MOVING
EAST AT 20 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS REPORTED WIND DAMAGE IN UNION.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
* LOCATIONS IMPACTED INCLUDE...
VILLA RIDGE...WASHINGTON...PACIFIC AND GRAY SUMMIT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
LARGE HAIL...DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THESE STORMS. MOVE INDOORS IMMEDIATELY. LIGHTNING
KILLS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.
TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!
&&
LAT...LON 3858 9106 3858 9103 3856 9100 3854 9094
3854 9091 3857 9083 3857 9073 3849 9073
3836 9075 3845 9096 3845 9126
TIME...MOT...LOC 2124Z 260DEG 16KT 3847 9103 3847 9084
3836 9068
HAIL...<.75IN
WIND...60 MPH
$$
KANOFSKY2 follow-up statements
740
WWUS53 KLSX 082132
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
432 PM CDT SUN JUL 8 2012
MOC071-082200-
/O.CON.KLSX.SV.W.0212.000000T0000Z-120708T2200Z/
FRANKLIN MO-
432 PM CDT SUN JUL 8 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
FRANKLIN COUNTY UNTIL 500 PM CDT...
AT 430 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM UNION TO VILLA RIDGE TO PACIFIC...AND MOVING EAST
AT 20 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS REPORTED TREE LIMBS DOWN WHEN THIS
STORM MOVED THROUGH UNION.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
LOCATIONS IMPACTED INCLUDE...
VILLA RIDGE...PACIFIC...GRAY SUMMIT AND CATAWISSA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
LARGE HAIL...DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THESE STORMS. MOVE INDOORS IMMEDIATELY. LIGHTNING
KILLS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.
TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!
&&
LAT...LON 3845 9096 3845 9103 3856 9100 3854 9095
3854 9094 3854 9091 3857 9083 3857 9073
3849 9073 3836 9075
TIME...MOT...LOC 2132Z 260DEG 16KT 3848 9099 3847 9092
3841 9078
HAIL...<.75IN
WIND...60 MPH
$$
KANOFSKY383
WWUS53 KLSX 082143
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
443 PM CDT SUN JUL 8 2012
MOC071-082153-
/O.CAN.KLSX.SV.W.0212.000000T0000Z-120708T2200Z/
FRANKLIN MO-
443 PM CDT SUN JUL 8 2012
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL FRANKLIN COUNTY
IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY. HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH
THESE THUNDERSTORMS.
LAT...LON 3845 9096 3845 9103 3856 9100 3854 9095
3854 9094 3854 9091 3857 9083 3857 9073
3849 9073 3836 9075
TIME...MOT...LOC 2143Z 260DEG 16KT 3849 9093 3848 9086
3842 9072
$$
KANOFSKYThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 7:03 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis | 42 min |
| Jul 7, 7:06 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 32 min |
| Jul 7, 7:10 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Saint Francois, Washington | 39 min |
| Jul 7, 7:18 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Louis | 27 min |
| Jul 7, 7:58 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 47 min |
| Jul 7, 8:49 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 26 min |
| Jul 8, 1:36 PM CDT | Severe Thunderstorm Warning | LSX | Osage | 39 min |
| Jul 8, 2:10 PM CDT | Severe Thunderstorm Warning | LSX | Osage | 28 min |
| Jul 8, 3:41 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Washington | 49 min |
| Jul 8, 3:53 PM CDT | Severe Thunderstorm Warning | LSX | Franklin | 37 min |
| Jul 8, 5:57 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 27 min |
| Jul 8, 6:49 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 41 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.