Alert archive / Missouri / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 443, NWS St. Louis, MO

July 3, 20118 counties in Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jul 3, 2011, 3:26 PM CDT for 8 counties in Missouri. It was in force for 64 min. 9 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: Jul 3, 2011, 3:26 PM CDT (20:26 UTC)
Expired: Jul 3, 2011, 4:30 PM CDT
In force: 64 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Callaway County, MO, Franklin County, MO, Gasconade County, MO, Lincoln County, MO, Montgomery County, MO, Osage County, MO, Saint Charles County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 46 km from the middle of the area, began a volume at 20:26 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 3, 3:26 PM CDT	HAIL 0.25	1 N Hermann, MO	.
Jul 3, 3:40 PM CDT	TSTM WND GST 60	Warrenton, MO
Jul 3, 3:43 PM CDT	TSTM WND DMG	Warrenton, MO	ROOF RIPPED OFF AT COMMERCIAL REAL ESTATE BUILDING NEAR INTERSECTION OF HIGHWAY 47 AND VETERANS MEMORIAL PARKWAY.
Jul 3, 4:03 PM CDT	TSTM WND DMG	Warrenton, MO	16 INCH DIAMETER LIMB BLOWN DOWN FROM A HEALTHY TREE. TIME ESTIMATED. APPROXIMATELY ONE HALF MILE NORTH OF INTERSTATE 70
Jul 3, 4:03 PM CDT	TSTM WND GST 70	Warrenton, MO	2 INCH DIAMETER TREE LIMB DOWN....TREES OF UNKNOWN SIZE ALSO DOWN.
Jul 3, 4:04 PM CDT	TSTM WND GST 70	Wright City, MO	TWO LARGE TREES DOWN OVER BELL ROAD GREATER THAN 12 INCHES IN DIAMETER. ALSO... POWER POLES TAKEN DOWN ON BELL ROAD.
Jul 3, 4:07 PM CDT	TSTM WND GST 70	4 Sw Flint Hill, MO
Jul 3, 4:15 PM CDT	TSTM WND DMG	Troy, MO	NUMEROUS TREES AND BRANCHES DOWN IN TOWN...TIME ESTIMATED FROM RADAR
Jul 3, 4:16 PM CDT	TSTM WND DMG	Troy, MO	12 INCH DIAMETER TREE UPROOTED AND POWER LINES DOWN ACROSS TOWN

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
Jul 3, 1:15 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.4 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.

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: 1911 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 884 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

952 
WUUS53 KLSX 032026
SVRLSX
MOC027-071-073-113-139-151-183-219-032130-
/O.NEW.KLSX.SV.W.0443.110703T2026Z-110703T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
326 PM CDT SUN JUL 3 2011

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CALLAWAY COUNTY IN CENTRAL MISSOURI...
  FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
  GASCONADE COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHERN LINCOLN COUNTY IN EAST CENTRAL MISSOURI...
  MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...
  EASTERN OSAGE COUNTY IN CENTRAL MISSOURI...
  WESTERN ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...
  WARREN COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 430 PM CDT

* AT 322 PM 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 WELLSVILLE TO JONESBURG TO
  7 MILES NORTHEAST OF DRAKE TO BLAND...AND MOVING EAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  OWENSVILLE...NEW HAVEN...WARRENTON...WRIGHT CITY...WASHINGTON...
  UNION...WENTZVILLE...TROY...LAKE ST. LOUIS...VILLA RIDGE...ST.
  PAUL...ST. CLAIR...GRAY SUMMIT...DARDENNE PRAIRIE...PACIFIC...
  BUELL...ROSEBUD...BELLFLOWER...TRELOAR AND TRUESDALE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INTENSE SQUALL LINES CAN OCCASIONALLY PRODUCE BRIEF TORNADOES IN
ADDITION TO WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH NOT
IMMEDIATELY LIKELY...FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON
THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. THIS STORM HAS THE
POTENTIAL TO CAUSE SERIOUS INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

&&

LAT...LON 3910 9162 3908 9091 3891 9072 3849 9073
      3828 9088 3830 9201
TIME...MOT...LOC 2026Z 272DEG 23KT 3905 9154 3884 9129
          3856 9136 3834 9160
WIND...HAIL 70MPH 1.00IN

$$

CVKING

2 follow-up statements

760 
WWUS53 KLSX 032044
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
344 PM CDT SUN JUL 3 2011

MOC027-151-032054-
/O.CAN.KLSX.SV.W.0443.000000T0000Z-110703T2130Z/
CALLAWAY MO-OSAGE MO-
344 PM CDT SUN JUL 3 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN OSAGE AND SOUTHEASTERN
CALLAWAY COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED EAST.

LAT...LON 3865 9153 3898 9153 3908 9091 3891 9072
      3849 9073 3828 9088 3830 9164
TIME...MOT...LOC 2044Z 272DEG 23KT 3897 9131 3885 9108
          3859 9111 3833 9134

$$

MOC071-073-113-139-183-219-032130-
/O.CON.KLSX.SV.W.0443.000000T0000Z-110703T2130Z/
FRANKLIN MO-GASCONADE MO-LINCOLN MO-MONTGOMERY MO-ST. CHARLES MO-
WARREN MO-
344 PM CDT SUN JUL 3 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WARREN...
WESTERN ST. CHARLES...MONTGOMERY...SOUTHERN LINCOLN...GASCONADE AND
FRANKLIN COUNTIES UNTIL 430 PM CDT...

AT 343 PM 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 BELLFLOWER TO TRUESDALE TO
MARTHASVILLE TO GERALD...MOVING EAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  WRIGHT CITY...WASHINGTON...WENTZVILLE...UNION...LAKE ST. LOUIS...
  TROY...VILLA RIDGE...ST. CLAIR...DARDENNE PRAIRIE...ST. PAUL...GRAY
  SUMMIT...PACIFIC...MARTHASVILLE...BEAUFORT...DUTZOW...HAWK POINT...
  NEW MELLE...AUGUSTA...DEFIANCE AND PARKWAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INTENSE SQUALL LINES CAN OCCASIONALLY PRODUCE BRIEF TORNADOES IN
ADDITION TO WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH NOT
IMMEDIATELY LIKELY...FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON
THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. THIS STORM HAS THE
POTENTIAL TO CAUSE SERIOUS INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

&&

LAT...LON 3865 9153 3898 9153 3908 9091 3891 9072
      3849 9073 3828 9088 3830 9164
TIME...MOT...LOC 2044Z 272DEG 23KT 3897 9131 3885 9108
          3859 9111 3833 9134
WIND...HAIL 70MPH 1.00IN

$$

CVKING

481 
WWUS53 KLSX 032057
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
357 PM CDT SUN JUL 3 2011

MOC073-139-032108-
/O.CAN.KLSX.SV.W.0443.000000T0000Z-110703T2130Z/
GASCONADE MO-MONTGOMERY MO-
357 PM CDT SUN JUL 3 2011

...THE SEVERE THUNDERSTORM WARNING FOR MONTGOMERY AND GASCONADE
COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED EAST.

LAT...LON 3891 9072 3861 9073 3851 9126 3902 9126
      3908 9091
TIME...MOT...LOC 2058Z 262DEG 30KT 3900 9112 3888 9089
          3862 9092

$$

MOC071-113-183-219-032130-
/O.CON.KLSX.SV.W.0443.000000T0000Z-110703T2130Z/
FRANKLIN MO-LINCOLN MO-ST. CHARLES MO-WARREN MO-
357 PM CDT SUN JUL 3 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WARREN...
WESTERN ST. CHARLES...SOUTHERN LINCOLN AND NORTHERN FRANKLIN COUNTIES
UNTIL 430 PM CDT...

AT 355 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM HAWK POINT TO MOSCOW MILLS TO DUTZOW...MOVING EAST AT
35 MPH. PENNY SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS.

LOCATIONS IMPACTED INCLUDE...
  WENTZVILLE...TROY...LAKE ST. LOUIS...ST. PAUL...DARDENNE PRAIRIE...
  NEW MELLE...MOSCOW MILLS...DAVIS...DEFIANCE...FLINT HILL...CAVE...
  MATSON AND OLD MONROE.

LAT...LON 3891 9072 3861 9073 3851 9126 3902 9126
      3908 9091
TIME...MOT...LOC 2058Z 262DEG 30KT 3900 9112 3888 9089
          3862 9092
WIND...HAIL 70MPH 0.75IN

$$

CVKING

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 1:18 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade	42 min
Jul 3, 1:29 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Saint Louis, Warren	46 min
Jul 3, 1:29 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Washington	46 min
Jul 3, 1:41 PM CDT	Severe Thunderstorm Warning	LSX	Boone	49 min
Jul 3, 1:54 PM CDT	Severe Thunderstorm Warning	LSX	Franklin	51 min
Jul 3, 2:02 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Callaway	58 min
Jul 3, 2:12 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Charles, Saint Louis	48 min
Jul 3, 2:13 PM CDT	Severe Thunderstorm Warning	LSX	Franklin	47 min
Jul 3, 2:16 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve, Saint Francois	44 min
Jul 3, 2:22 PM CDT	Severe Thunderstorm Warning	LSX	Saint Francois	20 min
Jul 3, 2:24 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Warren	51 min
Jul 3, 2:29 PM CDT	Severe Thunderstorm Warning	LSX	Cole, Osage	46 min
Jul 3, 2:33 PM CDT	Severe Thunderstorm Warning	LSX	Callaway	42 min
Jul 3, 2:34 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Saint Louis	26 min
Jul 3, 2:50 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Charles, Saint Louis, Warren, City of Saint Louis	40 min
Jul 3, 2:51 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Osage	24 min
Jul 3, 2:55 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Franklin, Gasconade, Montgomery, Warren	35 min
Jul 3, 3:05 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Gasconade, Montgomery, Osage	25 min
Jul 3, 3:24 PM CDT	Areal Flood Advisory	LSX	Sainte Genevieve, Saint Louis	6 hr
Jul 3, 3:56 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles, Saint Louis	49 min
Jul 3, 4:34 PM CDT	Areal Flood Advisory	LSX	Franklin, Lincoln, Saint Charles, Warren	5 hr
Jul 3, 5:25 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	35 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.