Alert archive / Missouri / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 472, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 28, 2011, 10:51 PM CDT for Lewis County, Marion County, Shelby County, Missouri. It was in force for 39 min. 1 report 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
- Jul 28, 2011, 10:51 PM CDT (03:51 UTC)
- Expired
- Jul 28, 2011, 11:30 PM CDT
- In force
- 39 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Lewis County, MO, Marion County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 159 km from the middle of the area, began a volume at 03:53 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 |
|---|---|---|---|
| Jul 28, 11:15 PM CDT | TSTM WND DMG | Maywood, MO | TWELVE TO FIFTEEN INCH DIAMETER TREES UPROOTED. A 30 X 40 FOOT SHED WAS ALSO DESTROYED IN ADDITION TO A ROOF THAT WAS TORN OFF ITS STRUCTURE IN TOWN. TIME IS APPROXIMATE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 3.9 hours before the alert went out and 214 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
- 4421 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 764 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.8
The text
As transmitted, in the capitals the NWS used until 2016.
195
WUUS53 KLSX 290351
SVRLSX
MOC111-127-205-290430-
/O.NEW.KLSX.SV.W.0472.110729T0351Z-110729T0430Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1051 PM CDT THU JUL 28 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN LEWIS COUNTY IN NORTHEAST MISSOURI...
MARION COUNTY IN NORTHEAST MISSOURI...
EASTERN SHELBY COUNTY IN NORTHEAST MISSOURI...
* UNTIL 1130 PM CDT
* AT 1049 PM 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
EMDEN...OR 9 MILES NORTHEAST OF SHELBINA...AND MOVING NORTHEAST AT
20 MPH.
* LOCATIONS IMPACTED INCLUDE...
PALMYRA...EMDEN...STEFFENVILLE...WARREN...PHILADELPHIA...
LEWISTOWN...MAYWOOD...EWING...TAYLOR AND MONTICELLO.
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 4023 9162 3991 9143 3989 9145 3985 9144
3980 9137 3979 9136 3974 9137 3966 9201
3986 9212 3995 9200 3995 9195 3998 9195
TIME...MOT...LOC 0352Z 247DEG 18KT 3980 9191
WIND...HAIL 60MPH 1.00IN
$$
GKS2 follow-up statements
913
WWUS53 KLSX 290412
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1112 PM CDT THU JUL 28 2011
MOC111-127-205-290430-
/O.CON.KLSX.SV.W.0472.000000T0000Z-110729T0430Z/
LEWIS MO-MARION MO-SHELBY MO-
1112 PM CDT THU JUL 28 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
SHELBY...MARION AND SOUTHEASTERN LEWIS COUNTIES UNTIL 1130 PM CDT...
AT 1111 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
PHILADELPHIA...OR 13 MILES NORTH OF MONROE CITY...MOVING NORTHEAST AT
20 MPH.
LOCATIONS IMPACTED INCLUDE...
PALMYRA...STEFFENVILLE...PHILADELPHIA...MAYWOOD...EWING...
LEWISTOWN...TAYLOR AND MONTICELLO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 4023 9162 3991 9143 3989 9145 3985 9144
3980 9137 3979 9136 3974 9137 3966 9201
3986 9212 3995 9200 3995 9195 3998 9195
TIME...MOT...LOC 0412Z 239DEG 17KT 3984 9180
WIND...HAIL 60MPH 1.00IN
$$
GKS813
WWUS53 KLSX 290432
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1132 PM CDT THU JUL 28 2011
MOC111-127-205-290442-
/O.EXP.KLSX.SV.W.0472.000000T0000Z-110729T0430Z/
LEWIS MO-MARION MO-SHELBY MO-
1132 PM CDT THU JUL 28 2011
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN SHELBY...MARION AND
SOUTHEASTERN LEWIS COUNTIES HAS EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
HOWEVER SMALL HAIL...GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE
WITH THIS THUNDERSTORM.
LAT...LON 4023 9162 3991 9143 3989 9145 3985 9144
3980 9137 3979 9136 3974 9137 3966 9201
3986 9212 3995 9200 3995 9195 3998 9195
TIME...MOT...LOC 0412Z 239DEG 17KT 3984 9180
$$
GKSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 9:26 PM CDT | River Flood Warning | LSX | Perry, Sainte Genevieve | 10 days |
| Jul 28, 11:14 PM CDT | Severe Thunderstorm Warning | LSX | Lewis | 33 min |
| Jul 29, 2:48 AM CDT | Severe Thunderstorm Warning | LSX | Knox | 42 min |
| Jul 29, 3:00 AM CDT | Excessive Heat Watch | LSX | Audrain, Knox, Lewis, Marion, Monroe, Pike and 2 more | 37 hr |
| Jul 29, 5:55 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Reynolds | 35 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.