Alert archive / Missouri / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 24, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 3, 2011, 11:14 PM CDT for 8 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
- Apr 3, 2011, 11:14 PM CDT (04:14 UTC)
- Expired
- Apr 4, 2011, 12:00 AM CDT
- In force
- 46 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Audrain County, MO, Boone County, MO, Lewis County, MO, Marion County, MO, Monroe County, MO, Pike County, MO, Ralls County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 140 km from the middle of the area, began a volume at 04:16 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 3, 8:11 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 4.2 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
- 1790 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 1684 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 119 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 5.9
The text
As transmitted, in the capitals the NWS used until 2016.
965
WUUS53 KLSX 040414
SVRLSX
MOC007-019-111-127-137-163-173-205-040500-
/O.NEW.KLSX.SV.W.0024.110404T0414Z-110404T0500Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1114 PM CDT SUN APR 3 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN AUDRAIN COUNTY IN CENTRAL MISSOURI...
NORTHEASTERN BOONE COUNTY IN CENTRAL MISSOURI...
SOUTHEASTERN LEWIS COUNTY IN NORTHEAST MISSOURI...
MARION COUNTY IN NORTHEAST MISSOURI...
MONROE COUNTY IN NORTHEAST MISSOURI...
WESTERN PIKE COUNTY IN NORTHEAST MISSOURI...
RALLS COUNTY IN NORTHEAST MISSOURI...
SHELBY COUNTY IN NORTHEAST MISSOURI...
* UNTIL MIDNIGHT CDT
* AT 1112 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM MACON TO 7 MILES SOUTH OF MADISON TO STURGEON...AND
MOVING EAST AT 70 MPH.
* LOCATIONS IMPACTED INCLUDE...
CENTRALIA...PARIS...SHELBINA...SANTA FE...MONROE CITY...VANDALIA...
PALMYRA...HANNIBAL...BOWLING GREEN...MADISON...WOODLAWN...
CLARENCE...MAUD...GRANVILLE...SHELBYVILLE...EMDEN...WARREN...
PERRY...LADDONIA AND PHILADELPHIA.
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 3989 9144 3987 9145 3984 9142 3926 9115
3916 9232 3925 9234 3926 9232 3984 9230
4003 9151
TIME...MOT...LOC 0414Z 258DEG 61KT 3972 9235 3938 9222
3918 9228
WIND...HAIL 70MPH <.75IN
$$
GLASS2 follow-up statements
734
WWUS53 KLSX 040433
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1133 PM CDT SUN APR 3 2011
MOC007-019-111-127-137-163-173-205-040500-
/O.CON.KLSX.SV.W.0024.000000T0000Z-110404T0500Z/
BOONE MO-AUDRAIN MO-PIKE MO-MONROE MO-RALLS MO-MARION MO-SHELBY MO-
LEWIS MO-
1133 PM CDT SUN APR 3 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
AUDRAIN AND NORTHEASTERN BOONE COUNTIES IN CENTRAL MISSOURI...AND
SOUTHEASTERN LEWIS...SHELBY...MARION...RALLS...MONROE AND WESTERN
PIKE COUNTIES IN NORTHEAST MISSOURI UNTIL MIDNIGHT CDT...
AT 1132 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 5 MILES NORTHWEST OF EMDEN TO 7 MILES NORTH OF SANTA FE TO 9
MILES SOUTHWEST OF SANTA FE...MOVING EAST AT 70 MPH.
LOCATIONS IMPACTED INCLUDE...
SANTA FE...MONROE CITY...PALMYRA...VANDALIA...HANNIBAL...BOWLING
GREEN...EMDEN...WARREN...PHILADELPHIA...PERRY...LADDONIA...
MAYWOOD...CENTER...RENSSELAER...SPAULDING...FARBER...NEW LONDON...
SPENCERBURG...FRANKFORD AND CURRYVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 4003 9151 3989 9144 3987 9145 3983 9142
3926 9115 3916 9231 3984 9230
TIME...MOT...LOC 0433Z 258DEG 61KT 3985 9191 3947 9183
3929 9194
WIND...HAIL 60MPH <.75IN
$$
GLASS919
WWUS53 KLSX 040452
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1152 PM CDT SUN APR 3 2011
MOC007-019-111-127-137-163-173-205-040502-
/O.EXP.KLSX.SV.W.0024.000000T0000Z-110404T0500Z/
BOONE MO-AUDRAIN MO-PIKE MO-MONROE MO-RALLS MO-MARION MO-SHELBY MO-
LEWIS MO-
1152 PM CDT SUN APR 3 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN AUDRAIN AND
NORTHEASTERN BOONE COUNTIES IN CENTRAL MISSOURI...AND SOUTHEASTERN
LEWIS...SHELBY...MARION...RALLS...MONROE AND WESTERN PIKE COUNTIES IN
NORTHEAST MISSOURI WILL EXPIRE AT MIDNIGHT CDT...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 2 AM.
LAT...LON 4003 9151 3989 9144 3987 9145 3983 9142
3926 9115 3916 9231 3984 9230
TIME...MOT...LOC 0452Z 258DEG 61KT 3992 9150 3954 9142
3936 9153
$$
CVKINGThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 8:34 PM CDT | Severe Thunderstorm Warning | LSX | Knox | 40 min |
| Apr 3, 9:30 PM CDT | Severe Thunderstorm Warning | LSX | Lewis | 30 min |
| Apr 3, 9:33 PM CDT | Severe Thunderstorm Warning | LSX | Lewis | 24 min |
| Apr 3, 11:21 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Cole, Moniteau | 39 min |
| Apr 3, 11:54 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone, Callaway, Cole, Montgomery, Osage | 35 min |
| Apr 4, 12:25 AM CDT | Severe Thunderstorm Warning | LSX | Boone, Cole, Moniteau | 30 min |
| Apr 4, 3:28 AM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade | 32 min |
| Apr 4, 3:55 AM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Charles, Saint Louis | 35 min |
| Apr 4, 3:58 PM CDT | Freeze Warning | LSX | Boone, Callaway, Cole, Crawford, Franklin, Gasconade and 12 more | 16 hr |
Nearby
Severe Thunderstorm Warnings in Missouri, 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.