Alert archive / Missouri / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 320, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 15, 2011, 3:29 AM CDT for Calhoun County, Illinois; 4 counties in Missouri. It was in force for 46 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
- Jun 15, 2011, 3:29 AM CDT (08:29 UTC)
- Expired
- Jun 15, 2011, 4:15 AM CDT
- In force
- 46 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Calhoun County, IL, Lincoln County, MO, Montgomery County, MO, Saint Charles County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 39 km from the middle of the area, began a volume at 08:29 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 00:00Z, 8.5 hours before the alert went out and 246 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
- 2 J/kg
- Mixed-layer CIN
- -693 J/kg
- Mixed-layer LCL
- 838 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 168 m²/s²
- 0-3 km storm-relative helicity
- 325 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
873
WUUS53 KLSX 150829
SVRLSX
ILC013-MOC113-139-183-219-150915-
/O.NEW.KLSX.SV.W.0320.110615T0829Z-110615T0915Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
329 AM CDT WED JUN 15 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CALHOUN COUNTY IN SOUTHWEST ILLINOIS...
SOUTHERN LINCOLN COUNTY IN EAST CENTRAL MISSOURI...
MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...
NORTHWESTERN ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...
NORTHERN WARREN COUNTY IN EAST CENTRAL MISSOURI...
* UNTIL 415 AM CDT
* AT 324 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
JONESBURG...OR 11 MILES SOUTHEAST OF MONTGOMERY CITY...AND MOVING
EAST AT 45 MPH.
* LOCATIONS IMPACTED INCLUDE...
WARRENTON...WRIGHT CITY...TROY...WENTZVILLE...ST. PAUL...
TRUESDALE...HAWK POINT...DAVIS...MOSCOW MILLS...WINFIELD...
TRUXTON...CAVE...FORISTELL...FLINT HILL...OLD MONROE...FOLEY AND
BEECHVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 3915 9071 3889 9062 3877 9094 3875 9154
3895 9153
TIME...MOT...LOC 0829Z 255DEG 39KT 3889 9129
WIND...HAIL 60MPH 1.00IN
$$
TILLY2 follow-up statements
417
WWUS53 KLSX 150853
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
353 AM CDT WED JUN 15 2011
ILC013-MOC113-139-183-219-150915-
/O.CON.KLSX.SV.W.0320.000000T0000Z-110615T0915Z/
CALHOUN IL-LINCOLN MO-MONTGOMERY MO-ST. CHARLES MO-WARREN MO-
353 AM CDT WED JUN 15 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
WARREN...NORTHWESTERN ST. CHARLES...MONTGOMERY...SOUTHERN LINCOLN AND
CALHOUN COUNTIES UNTIL 415 AM CDT...
AT 352 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR HAWK
POINT...OR 6 MILES WEST OF TROY...MOVING NORTHEAST AT 35 MPH.
LOCATIONS IMPACTED INCLUDE...
TROY...WENTZVILLE...ST. PAUL...DAVIS...MOSCOW MILLS...WINFIELD...
CAVE...FLINT HILL...FOLEY AND OLD MONROE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 3915 9071 3889 9062 3877 9094 3875 9154
3895 9153
TIME...MOT...LOC 0854Z 244DEG 31KT 3899 9106
WIND...HAIL 60MPH 1.00IN
$$
TILLY442
WWUS53 KLSX 150917
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
417 AM CDT WED JUN 15 2011
ILC013-MOC113-139-183-219-150927-
/O.EXP.KLSX.SV.W.0320.000000T0000Z-110615T0915Z/
CALHOUN IL-LINCOLN MO-MONTGOMERY MO-ST. CHARLES MO-WARREN MO-
417 AM CDT WED JUN 15 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WARREN...NORTHWESTERN
ST. CHARLES...MONTGOMERY...SOUTHERN LINCOLN AND CALHOUN COUNTIES HAS
EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA. HOWEVER GUSTY WINDS UP TO 45 MPH ARE STILL POSSIBLE WITH
OTHER THUNDERSTORMS IN THE AREA.
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 3915 9071 3889 9062 3877 9094 3875 9154
3895 9153
TIME...MOT...LOC 0853Z 223DEG 34KT 3894 9106
$$
TILLYThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 12:07 AM CDT | Flash Flood Warning | LSX | Adams | 8 hr |
| Jun 15, 3:45 AM CDT | Areal Flood Advisory | LSX | Calhoun | 3 hr |
| Jun 15, 3:46 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey, Macoupin, Madison | 44 min |
| Jun 15, 4:02 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene | 43 min |
| Jun 15, 4:15 AM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 48 min |
| Jun 15, 6:56 AM CDT | Areal Flood Warning | LSX | Adams | 12 hr |
| Jun 15, 3:23 AM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis | 41 min |
| Jun 15, 4:00 AM CDT | Flash Flood Warning | LSX | Lincoln, Montgomery, Warren | 3 hr |
Nearby
Severe Thunderstorm Warnings in Missouri, 2011Severe Thunderstorm Warnings in Illinois, 2011Every severe thunderstorm warning in 2011
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.