Alert archive / Missouri / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 413, NWS St. Louis, MO

June 27, 20117 counties in Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 27, 2011, 12:52 AM CDT for 7 counties in Missouri. It was in force for 53 min. 6 reports 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
Jun 27, 2011, 12:52 AM CDT (05:52 UTC)
Expired
Jun 27, 2011, 1:45 AM CDT
In force
53 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Hail
1.0 in
Wind
70.0 mph

Counties Audrain County, MO, Boone County, MO, Callaway County, MO, Monroe County, MO, Montgomery County, MO, Pike County, MO, Ralls County, MO

The radar

The St Louis radar (KLSX), 138 km from the middle of the area, began a volume at 05:53 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

TimeReportWhereRemark
Jun 27, 1:00 AM CDTTSTM WND DMGHarrisburg, MOSEVERAL TREES BLOWN DOWN IN NORTHWESTERN PORTIONS OF COUNTY.
Jun 27, 1:14 AM CDTTSTM WND DMG1 W Columbia, MOSEVERAL TREES BLOWN DOWN ON WEST SIDE OF TOWN.
Jun 27, 1:15 AM CDTTSTM WND GST 50Columbia, MOFROM A UNIVERSITY OF MISSOURI AGRICULTURAL WEATHER STATIONAT JEFFERSON FARM AND GARDEN.
Jun 27, 1:19 AM CDTTSTM WND GST 46Vandalia, MO
Jun 27, 1:30 AM CDTTSTM WND GST 806 Nw New Hartford, MO
Jun 27, 1:50 AM CDTTSTM WND GST 43Williamsburg, MO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 26, 6:55 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 5.9 hours before the alert went out and 287 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.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 2011-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2297 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2011-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 164 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2297 J/kg
Mixed-layer CIN
-323 J/kg
Mixed-layer LCL
1632 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
164 m²/s²
0-3 km storm-relative helicity
300 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

762 
WUUS53 KLSX 270552
SVRLSX
MOC007-019-027-137-139-163-173-270645-
/O.NEW.KLSX.SV.W.0413.110627T0552Z-110627T0645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1252 AM CDT MON JUN 27 2011

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  AUDRAIN COUNTY IN CENTRAL MISSOURI...
  BOONE COUNTY IN CENTRAL MISSOURI...
  NORTHERN CALLAWAY COUNTY IN CENTRAL MISSOURI...
  SOUTHERN MONROE COUNTY IN NORTHEAST MISSOURI...
  MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHWESTERN PIKE COUNTY IN NORTHEAST MISSOURI...
  SOUTHWESTERN RALLS COUNTY IN NORTHEAST MISSOURI...

* UNTIL 145 AM CDT

* AT 1248 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS
  WERE LOCATED ALONG A LINE EXTENDING FROM 8 MILES SOUTH OF MADISON
  TO 8 MILES SOUTH OF GLASGOW...AND MOVING SOUTHEAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CENTRALIA...SANTA FE...MEXICO...COLUMBIA...VANDALIA...WELLSVILLE...
  FULTON...STURGEON...HALLSVILLE...ROCHEPORT...MIDWAY...MURRY...
  LADDONIA...FARBER...AUXVASSE...MARTINSBURG...SHAMROCK...
  WILLIAMSBURG...HARRISBURG AND THOMPSON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 3924 9244 3925 9232 3941 9231 3938 9171
      3934 9130 3875 9169 3889 9248 3890 9248
      3898 9257
TIME...MOT...LOC 0552Z 295DEG 54KT 3934 9212 3908 9280
WIND...HAIL 70MPH 1.00IN

$$

GKS
2 follow-up statements
389 
WWUS53 KLSX 270618
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
118 AM CDT MON JUN 27 2011

MOC007-019-027-137-139-163-173-270645-
/O.CON.KLSX.SV.W.0413.000000T0000Z-110627T0645Z/
BOONE MO-CALLAWAY MO-MONROE MO-MONTGOMERY MO-PIKE MO-RALLS MO-
AUDRAIN MO-
118 AM CDT MON JUN 27 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR AUDRAIN...
NORTHERN CALLAWAY AND BOONE COUNTIES IN CENTRAL MISSOURI...AND
MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...AND SOUTHWESTERN
RALLS...SOUTHWESTERN PIKE AND SOUTHERN MONROE COUNTIES IN NORTHEAST
MISSOURI UNTIL 145 AM CDT...

AT 114 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM VANDALIA TO AUXVASSE TO
ROCHEPORT...MOVING SOUTHEAST AT 60 MPH.

LOCATIONS IMPACTED INCLUDE...
  COLUMBIA...WELLSVILLE...FULTON...AUXVASSE...MARTINSBURG...
  SHAMROCK...WILLIAMSBURG...MCBAINE AND KINGDOM CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 3924 9244 3925 9232 3941 9231 3938 9171
      3934 9130 3875 9169 3889 9248 3890 9248
      3898 9257
TIME...MOT...LOC 0617Z 295DEG 54KT 3933 9147 3904 9187
          3895 9247
WIND...HAIL 70MPH 1.00IN

$$

GKS
480 
WWUS53 KLSX 270648
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
148 AM CDT MON JUN 27 2011

MOC007-019-027-137-139-163-173-270658-
/O.EXP.KLSX.SV.W.0413.000000T0000Z-110627T0645Z/
BOONE MO-CALLAWAY MO-MONROE MO-MONTGOMERY MO-PIKE MO-RALLS MO-
AUDRAIN MO-
148 AM CDT MON JUN 27 2011

...THE SEVERE THUNDERSTORM WARNING FOR AUDRAIN...NORTHERN CALLAWAY
AND BOONE COUNTIES IN CENTRAL MISSOURI...AND MONTGOMERY COUNTY IN
EAST CENTRAL MISSOURI...AND SOUTHWESTERN RALLS...SOUTHWESTERN PIKE
AND SOUTHERN MONROE COUNTIES IN NORTHEAST MISSOURI HAS EXPIRED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED EAST OF THE
WARNED AREA.  HOWEVER SMALL HAIL...GUSTY WINDS AND HEAVY RAIN ARE
STILL POSSIBLE WITH THESE THUNDERSTORMS.

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 200 AM.

LAT...LON 3924 9244 3925 9232 3941 9231 3938 9171
      3934 9130 3875 9169 3889 9248 3890 9248
      3898 9257
TIME...MOT...LOC 0618Z 295DEG 54KT 3932 9145 3903 9185
          3894 9245

$$

GKS

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 26, 7:18 PM CDTSevere Thunderstorm WarningLSXFranklin, Gasconade, Warren14 min
Jun 26, 7:26 PM CDTSevere Thunderstorm WarningLSXCallaway, Gasconade, Montgomery, Osage38 min
Jun 26, 8:28 PM CDTRiver Flood WarningLSXBoone, Callaway, Cole, Moniteau65 days
Jun 26, 8:30 PM CDTFlash Flood WarningLSXKnox, Lewis12 hr
Jun 26, 8:34 PM CDTSevere Thunderstorm WarningLSXKnox, Lewis41 min
Jun 26, 9:09 PM CDTRiver Flood WarningLSXLewis4 days
Jun 26, 9:09 PM CDTRiver Flood WarningLSXMarion5 days
Jun 26, 9:16 PM CDTSevere Thunderstorm WarningLSXLewis59 min
Jun 27, 12:11 AM CDTSevere Thunderstorm WarningLSXKnox19 min
Jun 27, 12:26 AM CDTSevere Thunderstorm WarningLSXKnox, Lewis, Marion, Monroe, Ralls, Shelby49 min
Jun 27, 12:55 AM CDTTornado WarningLSXMarion, Monroe, Ralls, Shelby20 min
Jun 27, 1:08 AM CDTTornado WarningLSXMarion, Monroe, Pike, Ralls37 min
Jun 27, 1:13 AM CDTSevere Thunderstorm WarningLSXLewis, Marion62 min
Jun 27, 1:27 AM CDTSevere Thunderstorm WarningLSXAudrain, Callaway, Lincoln, Montgomery, Pike, Saint Charles and 1 more63 min
Jun 27, 1:43 AM CDTTornado WarningLSXPike32 min
Jun 27, 2:04 AM CDTSevere Thunderstorm WarningLSXLincoln, Saint Charles, Saint Louis41 min
Jun 27, 2:17 AM CDTSevere Thunderstorm WarningLSXCallaway, Crawford, Franklin, Gasconade, Jefferson, Montgomery and 5 more43 min
Jun 27, 2:42 AM CDTSevere Thunderstorm WarningLSXFranklin, Jefferson, Saint Charles, Saint Louis, City of Saint Louis48 min
Jun 27, 3:01 AM CDTSevere Thunderstorm WarningLSXFranklin, Jefferson, Sainte Genevieve, Saint Francois, Washington29 min
Jun 27, 3:14 AM CDTRiver Flood WarningLSXMarion4 days
Jun 27, 4:18 AM CDTSevere Thunderstorm WarningLSXCole, Moniteau, Osage23 min
Jun 27, 8:22 AM CDTAreal Flood WarningLSXKnox, Lewis12 hr
Jun 27, 8:25 AM CDTRiver Flood WarningLSXMarion4 days
Jun 27, 3:11 PM CDTRiver Flood WarningLSXFranklin, Warren22 days
Jun 27, 3:11 PM CDTRiver Flood WarningLSXSaint Charles, Saint Louis44 days
Jun 27, 5:19 PM CDTRiver Flood WarningLSXLincoln18 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.