Alert archive / Missouri / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 140, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 23, 2011, 10:22 PM CDT for 4 counties in Missouri. It was in force for 43 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 23, 2011, 10:22 PM CDT (03:22 UTC)
- Expired
- Apr 23, 2011, 11:05 PM CDT
- In force
- 43 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Crawford County, MO, Franklin County, MO, Jefferson County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 75 km from the middle of the area, began a volume at 03:23 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
Springfield, MO (KSGF), launched 00:00Z, 3.4 hours before the alert went out and 296 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 747 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 283 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
380
WUUS53 KLSX 240322
SVRLSX
MOC055-071-099-221-240415-
/O.NEW.KLSX.SV.W.0140.110424T0322Z-110424T0415Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1022 PM CDT SAT APR 23 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EAST CENTRAL CRAWFORD COUNTY IN EAST CENTRAL MISSOURI...
SOUTHEASTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
SOUTHERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI...
WASHINGTON COUNTY IN EAST CENTRAL MISSOURI...
* UNTIL 1115 PM CDT
* AT 1019 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED 7 MILES EAST OF CHERRYVILLE...OR 12 MILES
SOUTHEAST OF STEELVILLE...AND MOVING NORTHEAST AT 55 MPH.
* LOCATIONS IMPACTED INCLUDE...
POTOSI...DE SOTO...HILLSBORO...CEDAR HILL...OLD MINES...
RICHWOODS...DITTMER...OLYMPIAN VILLAGE...SHIRLEY...LATTY...CADET...
FLETCHER...GRUBVILLE...OERMANN...VALLES MILL...MORSE MILL...
VICTORIA AND HEMATITE.
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 3794 9127 3838 9065 3810 9032 3800 9058
3801 9062 3802 9061 3807 9061 3808 9064
3798 9064 3778 9116
TIME...MOT...LOC 0323Z 242DEG 46KT 3791 9110
WIND...HAIL <50MPH 1.00IN
$$
CARNEY3 follow-up statements
529
WWUS53 KLSX 240336
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1036 PM CDT SAT APR 23 2011
MOC055-240346-
/O.CAN.KLSX.SV.W.0140.000000T0000Z-110424T0415Z/
CRAWFORD MO-
1036 PM CDT SAT APR 23 2011
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CRAWFORD COUNTY
IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 3787 9099 3800 9107 3815 9098 3837 9067
3838 9065 3810 9033 3800 9058 3801 9062
3802 9061 3807 9061 3808 9064 3798 9064
TIME...MOT...LOC 0336Z 242DEG 46KT 3799 9091
$$
MOC071-099-221-240415-
/O.CON.KLSX.SV.W.0140.000000T0000Z-110424T0415Z/
WASHINGTON MO-JEFFERSON MO-FRANKLIN MO-
1036 PM CDT SAT APR 23 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
FRANKLIN...SOUTHERN JEFFERSON AND NORTHERN WASHINGTON COUNTIES UNTIL
1115 PM CDT...
AT 1031 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED 10 MILES SOUTHEAST OF ANTHONIES MILL...MOVING
NORTHEAST AT 55 MPH.
LOCATIONS IMPACTED INCLUDE...
POTOSI...DE SOTO...HILLSBORO...CEDAR HILL...OLD MINES...
RICHWOODS...DITTMER...OLYMPIAN VILLAGE...CADET...FLETCHER...
GRUBVILLE...OERMANN...VALLES MILL...MORSE MILL...VICTORIA AND
HEMATITE.
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 3787 9099 3800 9107 3815 9098 3837 9067
3838 9065 3810 9033 3800 9058 3801 9062
3802 9061 3807 9061 3808 9064 3798 9064
TIME...MOT...LOC 0336Z 242DEG 46KT 3799 9091
WIND...HAIL <50MPH 1.00IN
$$
CARNEY651
WWUS53 KLSX 240356
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1056 PM CDT SAT APR 23 2011
MOC071-221-240406-
/O.CAN.KLSX.SV.W.0140.000000T0000Z-110424T0415Z/
WASHINGTON MO-FRANKLIN MO-
1056 PM CDT SAT APR 23 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FRANKLIN AND
NORTHERN WASHINGTON COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 3801 9062 3802 9061 3807 9061 3808 9066
3810 9066 3809 9068 3811 9069 3812 9069
3828 9053 3810 9033 3800 9058
TIME...MOT...LOC 0356Z 242DEG 46KT 3809 9057
$$
MOC099-240415-
/O.CON.KLSX.SV.W.0140.000000T0000Z-110424T0415Z/
JEFFERSON MO-
1056 PM CDT SAT APR 23 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
JEFFERSON COUNTY UNTIL 1115 PM CDT...
AT 1053 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED 6 MILES SOUTHWEST OF DE SOTO...MOVING NORTHEAST AT
55 MPH.
LOCATIONS IMPACTED INCLUDE...
DE SOTO...HILLSBORO...OLYMPIAN VILLAGE...VALLES MILL...VICTORIA AND
HEMATITE.
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 3801 9062 3802 9061 3807 9061 3808 9066
3810 9066 3809 9068 3811 9069 3812 9069
3828 9053 3810 9033 3800 9058
TIME...MOT...LOC 0356Z 242DEG 46KT 3809 9057
WIND...HAIL <50MPH 1.00IN
$$
BRITT842
WWUS53 KLSX 240405
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1105 PM CDT SAT APR 23 2011
MOC099-240415-
/O.CAN.KLSX.SV.W.0140.000000T0000Z-110424T0415Z/
JEFFERSON MO-
1105 PM CDT SAT APR 23 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN JEFFERSON COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
LAT...LON 3801 9062 3802 9061 3807 9061 3808 9066
3810 9066 3809 9068 3811 9069 3812 9069
3828 9053 3810 9033 3800 9058
TIME...MOT...LOC 0405Z 242DEG 46KT 3814 9044
$$
BRITTThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 8:31 PM CDT | River Flood Warning | LSX | Crawford | 4 days |
| Apr 23, 8:31 PM CDT | River Flood Warning | LSX | Crawford, Washington | 7 days |
| Apr 23, 8:31 PM CDT | River Flood Warning | LSX | Franklin, Jefferson | 7 days |
| Apr 23, 8:31 PM CDT | River Flood Warning | LSX | Jefferson, Saint Louis | 8 days |
| Apr 23, 8:31 PM CDT | River Flood Warning | LSX | Jefferson, Saint Louis | 9 days |
| Apr 23, 8:37 PM CDT | River Flood Warning | LSX | Franklin | 3 days |
| Apr 24, 12:08 AM CDT | Flash Flood Warning | LSX | Crawford, Iron, Jefferson, Madison, Reynolds, Sainte Genevieve and 2 more | 12 hr |
| Apr 24, 2:53 AM CDT | River Flood Warning | LSX | Callaway, Osage | 3 days |
| Apr 24, 9:25 AM CDT | River Flood Warning | LSX | Osage | 6 days |
| Apr 24, 9:25 AM CDT | River Flood Warning | LSX | Osage | 52 hr |
| Apr 24, 9:25 AM CDT | River Flood Warning | LSX | Cole | 36 hr |
| Apr 24, 9:39 AM CDT | River Flood Warning | LSX | Franklin, Warren | 60 hr |
| Apr 24, 9:39 AM CDT | River Flood Warning | LSX | Saint Charles, Saint Louis | 7 days |
| Apr 24, 10:57 AM CDT | River Flood Warning | LSX | Saint Charles | 45 hr |
| Apr 24, 12:00 PM CDT | Flash Flood Warning | LSX | Crawford, Iron, Jefferson, Madison, Reynolds, Sainte Genevieve and 2 more | 6 hr |
| Apr 24, 5:57 PM CDT | Flash Flood Warning | LSX | Crawford, Iron, Jefferson, Madison, Reynolds, Sainte Genevieve and 2 more | 18 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.