Alert archive / Missouri / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 162, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 12, 2011, 8:13 PM CDT for 5 counties in Missouri. It was in force for 47 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
- May 12, 2011, 8:13 PM CDT (01:13 UTC)
- Expired
- May 12, 2011, 9:00 PM CDT
- In force
- 47 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Audrain County, MO, Boone County, MO, Callaway County, MO, Monroe County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 133 km from the middle of the area, began a volume at 01:13 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 |
|---|---|---|---|
| May 12, 5:31 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 1.2 hours before the alert went out and 273 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
- 387 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 1734 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
779
WUUS53 KLSX 130113
SVRLSX
MOC007-019-027-137-205-130200-
/O.NEW.KLSX.SV.W.0162.110513T0113Z-110513T0200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
813 PM CDT THU MAY 12 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
AUDRAIN COUNTY IN CENTRAL MISSOURI...
NORTHEASTERN BOONE COUNTY IN CENTRAL MISSOURI...
NORTHERN CALLAWAY COUNTY IN CENTRAL MISSOURI...
MONROE COUNTY IN NORTHEAST MISSOURI...
SOUTHERN SHELBY COUNTY IN NORTHEAST MISSOURI...
* UNTIL 900 PM CDT
* AT 809 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 SOUTHWEST OF MADISON TO CENTRALIA TO 6 MILES NORTHWEST
OF FULTON...AND MOVING NORTH AT 45 MPH. NICKEL SIZE HAIL MAY ALSO
ACCOMPANY THESE DAMAGING WINDS.
* LOCATIONS IMPACTED INCLUDE...
PARIS...MEXICO...SHELBINA...SANTA FE...MONROE CITY...MADISON...
WILLIAMSBURG...AUXVASSE...SHAMROCK...WOODLAWN...MAUD...GRANVILLE...
MARTINSBURG...CLARENCE...THOMPSON...DUNCANS BRIDGE...HOLLIDAY...
VANDIVER...BENTON CITY AND RUSH HILL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THESE STORMS HAVE A HISTORY OF PRODUCING MEASURED WIND GUSTS UP TO
65 MPH IN BOONE COUNTY. THIS IS A DANGEROUS SITUATION. SEEK SHELTER
NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 3971 9185 3966 9184 3965 9172 3933 9172
3932 9166 3889 9164 3886 9206 3916 9211
3936 9232 3992 9229
TIME...MOT...LOC 0112Z 202DEG 40KT 3944 9224 3926 9206
3895 9201
WIND...HAIL 60MPH 0.88IN
$$
BRITT3 follow-up statements
021
WWUS53 KLSX 130133
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
833 PM CDT THU MAY 12 2011
MOC019-027-130142-
/O.CAN.KLSX.SV.W.0162.000000T0000Z-110513T0200Z/
BOONE MO-CALLAWAY MO-
833 PM CDT THU MAY 12 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN CALLAWAY AND
NORTHEASTERN BOONE COUNTIES IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVE OUT OF THE
WARNED AREA. ADDITIONAL STRONG THUNDERSTORMS ARE POSSIBLE AND A
SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1 AM CDT.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN ST LOUIS.
LAT...LON 3971 9185 3966 9184 3965 9172 3933 9172
3931 9166 3907 9166 3907 9206 3924 9211
3936 9232 3992 9229
TIME...MOT...LOC 0132Z 202DEG 40KT 3980 9227 3941 9193
3917 9184
$$
MOC007-137-205-130200-
/O.CON.KLSX.SV.W.0162.000000T0000Z-110513T0200Z/
MONROE MO-SHELBY MO-AUDRAIN MO-
833 PM CDT THU MAY 12 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR AUDRAIN...
SOUTHERN SHELBY AND MONROE COUNTIES UNTIL 900 PM CDT...
AT 828 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 CLARENCE TO 6 MILES WEST OF SANTA FE TO MEXICO...MOVING NORTH AT
45 MPH.
LOCATIONS IMPACTED INCLUDE...
SANTA FE...SHELBINA...RUSH HILL...STOUTSVILLE...FLORIDA...HUNNEWELL
AND INDIAN CREEK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...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.
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 3971 9185 3966 9184 3965 9172 3933 9172
3931 9166 3907 9166 3907 9206 3924 9211
3936 9232 3992 9229
TIME...MOT...LOC 0132Z 202DEG 40KT 3980 9227 3941 9193
3917 9184
WIND...HAIL 60MPH <.75IN
$$
BRITT854
WWUS53 KLSX 130147
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
847 PM CDT THU MAY 12 2011
MOC007-130156-
/O.CAN.KLSX.SV.W.0162.000000T0000Z-110513T0200Z/
AUDRAIN MO-
847 PM CDT THU MAY 12 2011
...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTH CENTRAL AUDRAIN
COUNTY IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA. ADDITIONAL STRONG THUNDERSTORMS ARE POSSIBLE AND A
SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1 AM CDT.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN ST LOUIS.
LAT...LON 3971 9185 3966 9184 3965 9172 3934 9172
3934 9184 3935 9208 3954 9231 3992 9229
TIME...MOT...LOC 0146Z 202DEG 40KT 3991 9220 3952 9181
$$
MOC137-205-130200-
/O.CON.KLSX.SV.W.0162.000000T0000Z-110513T0200Z/
MONROE MO-SHELBY MO-
847 PM CDT THU MAY 12 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
SHELBY AND MONROE COUNTIES UNTIL 900 PM CDT...
AT 842 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 9 MILES NORTH OF CLARENCE TO 8 MILES NORTH OF SANTA FE...MOVING
NORTH AT 45 MPH.
LOCATIONS IMPACTED INCLUDE...
HUNNEWELL AND INDIAN CREEK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 3971 9185 3966 9184 3965 9172 3934 9172
3934 9184 3935 9208 3954 9231 3992 9229
TIME...MOT...LOC 0146Z 202DEG 40KT 3991 9220 3952 9181
WIND...HAIL 60MPH <.75IN
$$
BRITT453
WWUS53 KLSX 130159
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
859 PM CDT THU MAY 12 2011
MOC137-205-130209-
/O.EXP.KLSX.SV.W.0162.000000T0000Z-110513T0200Z/
MONROE MO-SHELBY MO-
859 PM CDT THU MAY 12 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN SHELBY AND MONROE
COUNTIES WILL EXPIRE AT 900 PM CDT...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1 AM CDT.
LAT...LON 3971 9185 3966 9184 3965 9172 3934 9172
3934 9184 3935 9208 3954 9231 3992 9229
TIME...MOT...LOC 0159Z 202DEG 40KT 4004 9213 3965 9174
$$
BRITTThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 7:43 PM CDT | Severe Thunderstorm Warning | LSX | Boone | 47 min |
| May 12, 7:51 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone, Callaway | 24 min |
| May 12, 7:56 PM CDT | Severe Thunderstorm Warning | LSX | Cole | 49 min |
| May 12, 8:41 PM CDT | Severe Thunderstorm Warning | LSX | Knox, Lewis, Shelby | 49 min |
| May 12, 10:04 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade, Osage | 56 min |
| May 12, 10:50 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade, Jefferson, Washington | 40 min |
| May 13, 10:27 AM CDT | River Flood Warning | LSX | Osage | 6 hr |
| May 13, 2:04 PM CDT | Severe Thunderstorm Warning | LSX | Saint Francois, Washington | 41 min |
| May 13, 2:39 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Sainte Genevieve, Saint Francois, Washington | 51 min |
| May 13, 3:05 PM CDT | Tornado Warning | LSX | Sainte Genevieve, Saint Francois | 20 min |
| May 13, 4:23 PM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve | 23 min |
| May 13, 4:26 PM CDT | Areal Flood Advisory | LSX | Audrain, Boone, Callaway | 4 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.