Alert archive / Missouri / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 253, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 16, 2012, 4:21 PM CDT for Crawford County, Washington County, Missouri. It was in force for 27 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
- Aug 16, 2012, 4:21 PM CDT (21:21 UTC)
- Expired
- Aug 16, 2012, 4:48 PM CDT
- In force
- 27 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Crawford County, MO, Washington County, MO
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 16, 1:05 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 9.4 hours before the alert went out and 260 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
- 1719 J/kg
- Mixed-layer CIN
- -126 J/kg
- Mixed-layer LCL
- 1553 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
224
WUUS53 KLSX 162121
SVRLSX
MOC055-221-162200-
/O.NEW.KLSX.SV.W.0253.120816T2121Z-120816T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
421 PM CDT THU AUG 16 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL CRAWFORD COUNTY IN EAST CENTRAL MISSOURI...
WESTERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI...
* UNTIL 500 PM CDT
* AT 417 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
STEELVILLE...AND MOVING EAST AT 10 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...
ANTHONIES MILL AND CHERRYVILLE.
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 3809 9096 3783 9097 3782 9153 3808 9152
TIME...MOT...LOC 2121Z 270DEG 13KT 3798 9132
HAIL...1.00IN
WIND...60 MPH
$$
GOSSELIN2 follow-up statements
509
WWUS53 KLSX 162131 RRA
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
431 PM CDT THU AUG 16 2012
MOC055-221-162200-
/O.CON.KLSX.SV.W.0253.000000T0000Z-120816T2200Z/
CRAWFORD MO-WASHINGTON MO-
431 PM CDT THU AUG 16 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN
WASHINGTON AND CENTRAL CRAWFORD COUNTIES UNTIL 500 PM CDT...
AT 430 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR STEELVILLE...
AND MOVING EAST AT 10 MPH.
HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.
LOCATIONS IMPACTED INCLUDE...
ANTHONIES MILL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ST
LOUIS.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!
&&
LAT...LON 3809 9096 3783 9097 3782 9153 3808 9152
TIME...MOT...LOC 2132Z 270DEG 13KT 3798 9127
HAIL...1.00IN
WIND...60 MPH
$$
GOSSELIN285 WWUS53 KLSX 162148 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 448 PM CDT THU AUG 16 2012 MOC055-221-162158- /O.CAN.KLSX.SV.W.0253.000000T0000Z-120816T2200Z/ CRAWFORD MO-WASHINGTON MO- 448 PM CDT THU AUG 16 2012 ...THE SEVERE THUNDERSTORM WARNING FOR WESTERN WASHINGTON AND CENTRAL CRAWFORD COUNTIES IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH THIS THUNDERSTORM. LAT...LON 3809 9096 3783 9097 3782 9153 3808 9152 TIME...MOT...LOC 2148Z 270DEG 13KT 3798 9120 $$ GOSSELIN
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 2:07 PM CDT | Severe Thunderstorm Warning | LSX | Gasconade, Osage | 23 min |
| Aug 16, 2:15 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Warren | 30 min |
| Aug 16, 2:37 PM CDT | Severe Thunderstorm Warning | LSX | Franklin | 23 min |
| Aug 16, 2:54 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade, Washington | 51 min |
| Aug 16, 2:58 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson | 47 min |
| Aug 16, 3:08 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis, City of Saint Louis | 52 min |
| Aug 16, 3:18 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 42 min |
| Aug 16, 3:28 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 47 min |
| Aug 16, 3:43 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 47 min |
| Aug 16, 3:54 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Francois, Washington | 33 min |
| Aug 16, 5:26 PM CDT | Areal Flood Advisory | LSX | Crawford, Washington | 6 hr |
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.