Alert archive / Missouri / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 244, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 16, 2012, 3:08 PM CDT for Saint Charles County, Saint Louis County, City of Saint Louis, Missouri. It was in force for 52 min. 3 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
- Aug 16, 2012, 3:08 PM CDT (20:08 UTC)
- Expired
- Aug 16, 2012, 4:00 PM CDT
- In force
- 52 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties City of Saint Louis, MO, Saint Charles County, MO, Saint Louis County, MO
The radar
The St Louis radar (KLSX), 32 km from the middle of the area, began a volume at 20:09 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 |
|---|---|---|---|
| Aug 16, 3:13 PM CDT | HAIL 0.25 | Maryland Heights, MO | |
| Aug 16, 3:43 PM CDT | HAIL 0.25 | St. Louis, MO | |
| Aug 16, 3:44 PM CDT | HAIL 1 | St. Louis, MO | A FEW QUARTER SIZE HAIL AT SOUTH GRAND AND CHIPPEWA IN SOUTH ST. LOUIS... MOSTLY DIME SIZE. |
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 |
|---|---|---|---|
| Aug 16, 1:05 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 8.1 hours before the alert went out and 225 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
- 817 J/kg
- Mixed-layer CIN
- -262 J/kg
- Mixed-layer LCL
- 1559 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
039
WUUS53 KLSX 162008
SVRLSX
MOC183-189-510-162100-
/O.NEW.KLSX.SV.W.0244.120816T2008Z-120816T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
308 PM CDT THU AUG 16 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...
CENTRAL ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI...
ST. LOUIS CITY IN EAST CENTRAL MISSOURI...
* UNTIL 400 PM CDT
* AT 304 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
CHESTERFIELD...AND MOVING EAST AT 30 MPH.
HAZARD...60 MPH WIND GUSTS AND NICKEL SIZE HAIL.
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...
BALLWIN...MANCHESTER...MARYLAND HEIGHTS...TOWN AND COUNTRY...CREVE
COEUR...DES PERES...FRONTENAC...KIRKWOOD...OLIVETTE...OVERLAND...
WARSON WOODS...LADUE...GLENDALE...OAKLAND...CRESTWOOD...
BRENTWOOD...WEBSTER GROVES...UNIVERSITY CITY...CLAYTON AND RICHMOND
HEIGHTS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3861 9019 3855 9024 3850 9027 3863 9071
3877 9063 3867 9018 3865 9018
TIME...MOT...LOC 2008Z 282DEG 24KT 3867 9055
HAIL...0.88IN
WIND...60 MPH
$$
GOSSELIN2 follow-up statements
705
WWUS53 KLSX 162030
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
330 PM CDT THU AUG 16 2012
MOC183-162040-
/O.CAN.KLSX.SV.W.0244.000000T0000Z-120816T2100Z/
ST. CHARLES MO-
330 PM CDT THU AUG 16 2012
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ST. CHARLES COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA.
LAT...LON 3861 9019 3850 9027 3859 9057 3871 9047
3867 9018
TIME...MOT...LOC 2030Z 282DEG 24KT 3864 9037
$$
MOC189-510-162100-
/O.CON.KLSX.SV.W.0244.000000T0000Z-120816T2100Z/
ST. LOUIS MO-ST. LOUIS CITY MO-
330 PM CDT THU AUG 16 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR ST. LOUIS CITY
AND CENTRAL ST. LOUIS COUNTIES UNTIL 400 PM CDT...
AT 326 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LADUE...AND
MOVING EAST AT 30 MPH.
HAZARD...60 MPH WIND GUSTS AND NICKEL SIZE HAIL.
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...
BRENTWOOD...WEBSTER GROVES...UNIVERSITY CITY...CLAYTON...RICHMOND
HEIGHTS...MAPLEWOOD...SHREWSBURY...LAKESHIRE...AFFTON...HILLSDALE...
LEMAY AND ST. LOUIS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3861 9019 3850 9027 3859 9057 3871 9047
3867 9018
TIME...MOT...LOC 2030Z 282DEG 24KT 3864 9037
HAIL...0.88IN
WIND...60 MPH
$$
GOSSELIN523
WWUS53 KLSX 162057 RRA
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
357 PM CDT THU AUG 16 2012
MOC189-510-162108-
/O.EXP.KLSX.SV.W.0244.000000T0000Z-120816T2100Z/
ST. LOUIS MO-ST. LOUIS CITY MO-
357 PM CDT THU AUG 16 2012
...THE SEVERE THUNDERSTORM WARNING FOR ST. LOUIS CITY AND CENTRAL ST.
LOUIS COUNTIES WILL EXPIRE AT 400 PM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 8 PM CDT.
LAT...LON 3861 9019 3850 9027 3859 9057 3871 9047
3867 9018
TIME...MOT...LOC 2058Z 282DEG 24KT 3860 9014
$$
GOSSELINThe 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, 3:18 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, 4:21 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Washington | 27 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.