Alert archive / Missouri / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 263, NWS St. Louis, MO

June 10, 20114 counties in Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 10, 2011, 5:06 PM CDT for 4 counties in Missouri. It was in force for 39 min. 5 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 10, 2011, 5:06 PM CDT (22:06 UTC)
Expired: Jun 10, 2011, 5:45 PM CDT
In force: 39 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Audrain County, MO, Montgomery County, MO, Pike County, MO, Ralls County, MO

The radar

The St Louis radar (KLSX), 82 km from the middle of the area, began a volume at 22:08 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
Jun 10, 5:38 PM CDT	HAIL 1	3 S Vandalia, MO
Jun 10, 5:40 PM CDT	HAIL 1	2 S Curryville, MO
Jun 10, 5:41 PM CDT	HAIL 1.75	1 S Vandalia, MO
Jun 10, 5:42 PM CDT	HAIL 1.75	3 S Vandalia, MO
Jun 10, 5:45 PM CDT	HAIL 1	Curryville, MO	HAIL RANGED FROM DIME TO QUARTER SIZE. ESTIMATED WINDS IN EXCESS OF 60 MPH.

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.

Issued	Product	Office	Lasted
Jun 10, 4:57 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.1 hours before the alert went out and 252 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 581 J/kg
Mixed-layer CIN: -228 J/kg
Mixed-layer LCL: 670 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 130 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

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

871 
WUUS53 KLSX 102206
SVRLSX
MOC007-139-163-173-102245-
/O.NEW.KLSX.SV.W.0263.110610T2206Z-110610T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
506 PM CDT FRI JUN 10 2011

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL AUDRAIN COUNTY IN CENTRAL MISSOURI...
  NORTHERN MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHWESTERN PIKE COUNTY IN NORTHEAST MISSOURI...
  SOUTH CENTRAL RALLS COUNTY IN NORTHEAST MISSOURI...

* UNTIL 545 PM CDT

* AT 503 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
  LOCATED NEAR WELLSVILLE...AND MOVING NORTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  VANDALIA...NEW HARTFORD...CURRYVILLE...SPENCERBURG...MIDDLETOWN...
  ASHLEY AND ST. CLEMENT.

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.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

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 3946 9145 3925 9109 3923 9112 3923 9118
      3918 9119 3908 9134 3916 9163
TIME...MOT...LOC 2206Z 214DEG 27KT 3910 9153
WIND...HAIL 60MPH 1.50IN

$$

TES

2 follow-up statements

188 
WWUS53 KLSX 102235
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
535 PM CDT FRI JUN 10 2011

MOC007-139-163-173-102245-
/O.CON.KLSX.SV.W.0263.000000T0000Z-110610T2245Z/
MONTGOMERY MO-PIKE MO-RALLS MO-AUDRAIN MO-
535 PM CDT FRI JUN 10 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
AUDRAIN COUNTY IN CENTRAL MISSOURI...AND NORTHERN MONTGOMERY COUNTY
IN EAST CENTRAL MISSOURI...AND SOUTH CENTRAL RALLS AND SOUTHWESTERN
PIKE COUNTIES IN NORTHEAST MISSOURI UNTIL 545 PM CDT...

AT 531 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL...
AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6
MILES SOUTHEAST OF VANDALIA...MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  CURRYVILLE...SPENCERBURG...ASHLEY AND ST. CLEMENT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

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 3946 9145 3925 9109 3923 9112 3923 9118
      3918 9119 3908 9134 3916 9163
TIME...MOT...LOC 2235Z 214DEG 27KT 3928 9137
WIND...HAIL 60MPH 1.50IN

$$

TES

020 
WWUS53 KLSX 102254
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
554 PM CDT FRI JUN 10 2011

MOC007-139-163-173-102304-
/O.EXP.KLSX.SV.W.0263.000000T0000Z-110610T2245Z/
MONTGOMERY MO-PIKE MO-RALLS MO-AUDRAIN MO-
554 PM CDT FRI JUN 10 2011

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL AUDRAIN COUNTY IN
CENTRAL MISSOURI...AND NORTHERN MONTGOMERY COUNTY IN EAST CENTRAL
MISSOURI...AND SOUTH CENTRAL RALLS AND SOUTHWESTERN PIKE COUNTIES IN 
NORTHEAST MISSOURI HAS BEEN REISSUED...

PLEASE REFER TO THAT BULLETIN FOR THE LATEST SEVERE WEATHER
INFORMATION.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT 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 3946 9145 3925 9109 3923 9112 3923 9118
      3918 9119 3908 9134 3916 9163
TIME...MOT...LOC 2235Z 214DEG 27KT 3928 9137

$$

TES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 9:55 PM CDT	Severe Thunderstorm Warning	LSX	Knox, Lewis	50 min
Jun 9, 10:28 PM CDT	Flash Flood Warning	LSX	Knox	6 hr
Jun 9, 10:53 PM CDT	Flash Flood Warning	LSX	Lewis	6 hr
Jun 9, 11:07 PM CDT	River Flood Warning	LSX	Lewis	11 hr
Jun 9, 11:07 PM CDT	River Flood Warning	LSX	Lewis	11 hr
Jun 9, 11:16 PM CDT	Severe Thunderstorm Warning	LSX	Knox, Shelby	44 min
Jun 10, 11:38 AM CDT	River Flood Warning	LSX	Lewis	13 days
Jun 10, 11:38 AM CDT	River Flood Warning	LSX	Marion	14 days
Jun 10, 11:38 AM CDT	River Flood Warning	LSX	Ralls	14 days
Jun 10, 3:49 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Montgomery, Osage	41 min
Jun 10, 4:38 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway, Montgomery	52 min
Jun 10, 4:40 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway	50 min
Jun 10, 4:42 PM CDT	Severe Thunderstorm Warning	LSX	Gasconade, Montgomery, Warren	48 min
Jun 10, 4:48 PM CDT	Severe Thunderstorm Warning	LSX	Knox	27 min
Jun 10, 5:02 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade	28 min
Jun 10, 5:29 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Montgomery, Warren	31 min
Jun 10, 5:36 PM CDT	Severe Thunderstorm Warning	LSX	Lewis	39 min
Jun 10, 5:42 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Pike	48 min
Jun 10, 5:46 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Warren	44 min
Jun 10, 5:49 PM CDT	Tornado Warning	LSX	Lewis	41 min
Jun 10, 6:53 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Monroe	52 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2011 Every 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.