Alert archive / Missouri / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 358, NWS St. Louis, MO

June 19, 2011Franklin County, Saint Charles County, Warren County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 19, 2011, 12:52 AM CDT for Franklin County, Saint Charles County, Warren County, Missouri. It was in force for 53 min. 3 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 19, 2011, 12:52 AM CDT (05:52 UTC)
Expired: Jun 19, 2011, 1:45 AM CDT
In force: 53 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.5 in
Wind: 70.0 mph

Counties Franklin County, MO, Saint Charles County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 42 km from the middle of the area, began a volume at 05:52 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 19, 12:53 AM CDT	HAIL 0.25	8 S New Haven, MO	SPOTTER REPORTS PEA SIZE HAIL AND HEAVY RAIN 8 MILES SOUTH OF NEW HAVEN
Jun 19, 1:25 AM CDT	HAIL 0.25	Union, MO	ALONG HWY 50 E
Jun 19, 1:37 AM CDT	HAIL 0.88	2 E Villa Ridge, MO	NICKEL HAIL OBSERVED AT THE MR FUEL IN VILLA RIDGE

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 18, 8:26 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.9 hours before the alert went out and 281 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: 115 J/kg
Mixed-layer CIN: -294 J/kg
Mixed-layer LCL: 1196 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

942 
WUUS53 KLSX 190552
SVRLSX
MOC071-183-219-190645-
/O.NEW.KLSX.SV.W.0358.110619T0552Z-110619T0645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1252 AM CDT SUN JUN 19 2011

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHWESTERN ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHEASTERN WARREN COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 145 AM CDT

* AT 1248 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PING PONG BALL
  SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE
  STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEW HAVEN TO 6
  MILES NORTHWEST OF BEAUFORT TO ROSEBUD...AND MOVING EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  NEW HAVEN...WASHINGTON...UNION...VILLA RIDGE...GRAY SUMMIT...
  PACIFIC...BEAUFORT...MARTHASVILLE...DUTZOW...AUGUSTA...NEW MELLE...
  DEFIANCE...LESLIE...LYON...NOSER MILL...MOSELLE...MATSON...
  ROBERTSVILLE AND CATAWISSA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 3859 9136 3876 9073 3840 9074 3832 9137
TIME...MOT...LOC 0553Z 249DEG 28KT 3859 9124 3849 9122
          3836 9131
WIND...HAIL 70MPH 1.50IN

$$

CVKING

3 follow-up statements

633 
WWUS53 KLSX 190610
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
110 AM CDT SUN JUN 19 2011

MOC071-183-219-190645-
/O.CON.KLSX.SV.W.0358.000000T0000Z-110619T0645Z/
FRANKLIN MO-ST. CHARLES MO-WARREN MO-
110 AM CDT SUN JUN 19 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
WARREN...SOUTHWESTERN ST. CHARLES AND NORTHERN FRANKLIN COUNTIES
UNTIL 145 AM CDT...

AT 106 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM MARTHASVILLE TO 5 MILES WEST OF
WASHINGTON TO BEAUFORT...MOVING EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  WASHINGTON...UNION...VILLA RIDGE...GRAY SUMMIT...DARDENNE
  PRAIRIE...PACIFIC...MARTHASVILLE...DUTZOW...AUGUSTA...NEW MELLE...
  DEFIANCE...MOSELLE...MATSON...ROBERTSVILLE AND CATAWISSA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 3861 9128 3876 9073 3840 9074 3833 9128
TIME...MOT...LOC 0611Z 249DEG 28KT 3864 9107 3854 9105
          3841 9114
WIND...HAIL 60MPH 1.00IN

$$

CVKING

687 
WWUS53 KLSX 190618
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
118 AM CDT SUN JUN 19 2011

MOC071-183-219-190645-
/O.CON.KLSX.SV.W.0358.000000T0000Z-110619T0645Z/
FRANKLIN MO-ST. CHARLES MO-WARREN MO-
118 AM CDT SUN JUN 19 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
WARREN...SOUTHWESTERN ST. CHARLES AND NORTHEASTERN FRANKLIN COUNTIES
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 DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM WASHINGTON TO ST. CLAIR TO
SULLIVAN...MOVING EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  VILLA RIDGE...GRAY SUMMIT...PACIFIC...AUGUSTA...DEFIANCE...
  MOSELLE...ROBERTSVILLE...CATAWISSA AND MATSON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY 
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED 
ROADWAYS.

&&

LAT...LON 3835 9116 3860 9117 3868 9073 3840 9074
TIME...MOT...LOC 0619Z 273DEG 27KT 3856 9094 3840 9091
          3821 9106
WIND...HAIL 60MPH 1.00IN

$$

CVKING

376 
WWUS53 KLSX 190639
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
139 AM CDT SUN JUN 19 2011

MOC071-183-219-190649-
/O.EXP.KLSX.SV.W.0358.000000T0000Z-110619T0645Z/
FRANKLIN MO-ST. CHARLES MO-WARREN MO-
139 AM CDT SUN JUN 19 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WARREN...
SOUTHWESTERN ST. CHARLES AND NORTHEASTERN FRANKLIN COUNTIES WILL
EXPIRE AT 145 AM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR 
PROPERTY.  HOWEVER GUSTY WINDS...HAIL TO THE SIZE OF NICKELS AND 
HEAVY RAIN ARE LIKELY TO CONTINUE WITH THESE THUNDERSTORMS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 4 AM CDT.

LAT...LON 3835 9116 3860 9117 3868 9073 3840 9074
TIME...MOT...LOC 0639Z 273DEG 27KT 3855 9075 3839 9072
          3820 9087

$$

CVKING

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 8:26 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Cole, Moniteau	49 min
Jun 18, 9:09 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Callaway, Cole	66 min
Jun 18, 9:29 PM CDT	Severe Thunderstorm Warning	LSX	Cole, Osage	46 min
Jun 18, 9:56 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	37 min
Jun 18, 10:11 PM CDT	Severe Thunderstorm Warning	LSX	Osage	37 min
Jun 18, 10:23 PM CDT	Severe Thunderstorm Warning	LSX	Cole, Osage	25 min
Jun 18, 10:36 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Callaway, Cole, Moniteau	39 min
Jun 18, 10:53 PM CDT	Flash Flood Warning	LSX	Cole, Osage	8 hr
Jun 18, 10:54 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Montgomery, Pike	36 min
Jun 18, 10:59 PM CDT	Severe Thunderstorm Warning	LSX	Gasconade, Osage	46 min
Jun 18, 11:20 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Pike	40 min
Jun 18, 11:29 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Warren	32 min
Jun 18, 11:55 PM CDT	Severe Thunderstorm Warning	LSX	Pike	50 min
Jun 19, 12:13 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade	47 min
Jun 19, 1:08 AM CDT	Severe Thunderstorm Warning	LSX	Franklin	32 min
Jun 19, 1:51 AM CDT	Severe Thunderstorm Warning	LSX	Crawford, Iron, Reynolds, Washington	39 min
Jun 19, 1:59 AM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Sainte Genevieve	46 min
Jun 19, 2:07 AM CDT	Severe Thunderstorm Warning	LSX	Lewis	33 min
Jun 19, 2:25 AM CDT	Severe Thunderstorm Warning	LSX	Iron, Jefferson, Madison, Reynolds, Sainte Genevieve, Saint Francois and 1 more	50 min
Jun 19, 2:28 AM CDT	Tornado Warning	LSX	Iron, Sainte Genevieve, Saint Francois, Washington	47 min
Jun 19, 2:36 AM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Saint Louis	39 min
Jun 19, 2:39 AM CDT	Severe Thunderstorm Warning	LSX	Iron, Madison, Reynolds	36 min
Jun 19, 2:56 AM CDT	Tornado Warning	LSX	Jefferson, Sainte Genevieve, Saint Francois	34 min
Jun 19, 3:00 AM CDT	Severe Thunderstorm Warning	LSX	Iron, Madison, Reynolds	60 min
Jun 19, 10:10 AM CDT	River Flood Warning	LSX	Boone, Callaway, Cole, Moniteau	11 hr
Jun 19, 10:10 AM CDT	River Flood Warning	LSX	Saint Charles, Saint Louis	11 hr
Jun 19, 2:48 PM CDT	River Flood Warning	LSX	Lewis	68 hr

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.