Alert archive / Missouri / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 21, NWS St. Louis, MO

April 10, 20134 counties in Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 10, 2013, 5:41 PM CDT for 4 counties in Missouri. It was in force for 49 min. 7 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: Apr 10, 2013, 5:41 PM CDT (22:41 UTC)
Expired: Apr 10, 2013, 6:30 PM CDT
In force: 49 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Callaway County, MO, Gasconade County, MO, Montgomery County, MO, Osage County, MO

The radar

The St Louis radar (KLSX), 75 km from the middle of the area, began a volume at 22:44 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
Apr 10, 5:41 PM CDT	HAIL 0.7	5 Se Linn, MO
Apr 10, 5:50 PM CDT	HAIL 0.25	3 Nw Pershing, MO	HAIL IS COVERING THE GROUND
Apr 10, 5:54 PM CDT	HAIL 1.75	3 Nnw Pershing, MO
Apr 10, 5:55 PM CDT	HAIL 1	Gasconade, MO
Apr 10, 6:01 PM CDT	HAIL 1	Rhineland, MO
Apr 10, 6:15 PM CDT	HAIL 0.88	New Florence, MO
Apr 10, 6:23 PM CDT	HAIL 0.25	Montgomery City, MO	HEAVY RAIN.

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

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.7 hours before the alert went out and 290 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: 2649 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 701 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 219 m²/s²
0-3 km storm-relative helicity: 219 m²/s²
Significant tornado parameter: 2.6
Supercell composite: 15.4

Open this sounding in Storm Lab

The text

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

316 
WUUS53 KLSX 102241
SVRLSX
MOC027-073-139-151-102330-
/O.NEW.KLSX.SV.W.0021.130410T2241Z-130410T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
541 PM CDT WED APR 10 2013

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CALLAWAY COUNTY IN CENTRAL MISSOURI...
  GASCONADE COUNTY IN EAST CENTRAL MISSOURI...
  MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...
  EASTERN OSAGE COUNTY IN CENTRAL MISSOURI...

* UNTIL 630 PM CDT

* AT 540 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MOUNT
  STERLING...AND MOVING NORTH AT 65 MPH.

  HAZARD...QUARTER SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...DAMAGE TO VEHICLES AND CROPS IS EXPECTED.

* LOCATIONS IMPACTED INCLUDE...
  HERMANN...MONTGOMERY CITY...CHAMOIS...BIG SPRING...WILLIAMSBURG...
  MINEOLA...NEW FLORENCE...BELLFLOWER...BUELL...MORRISON...
  GASCONADE...PORTLAND...RHINELAND...MCKITTRICK...AMERICUS...DANVILLE
  AND HIGH HILL.

THIS WARNING INCLUDES DEUTSCHHEIM HISTORIC SITE AND GRAHAM CAVE STATE
PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 70 IN MISSOURI FROM EXIT 161 TO EXIT 179.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3906 9167 3906 9163 3907 9163 3903 9126
      3893 9126 3884 9132 3884 9142 3871 9141
      3835 9165 3839 9188
TIME...MOT...LOC 2242Z 199DEG 57KT 3855 9160

HAIL...1.00IN
WIND...<50MPH

$$

KANOFSKY

4 follow-up statements

788 
WWUS53 KLSX 102254
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
554 PM CDT WED APR 10 2013

MOC027-073-139-151-102330-
/O.CON.KLSX.SV.W.0021.000000T0000Z-130410T2330Z/
CALLAWAY MO-GASCONADE MO-MONTGOMERY MO-OSAGE MO-
554 PM CDT WED APR 10 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
OSAGE...MONTGOMERY...GASCONADE AND EASTERN CALLAWAY COUNTIES UNTIL
630 PM CDT...

AT 553 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES WEST OF
HERMANN...AND MOVING NORTH AT 65 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES AND CROPS IS EXPECTED.

LOCATIONS IMPACTED INCLUDE...
MONTGOMERY CITY...BIG SPRING...WILLIAMSBURG...MINEOLA...NEW
FLORENCE...BELLFLOWER...BUELL...MCKITTRICK...AMERICUS...DANVILLE AND
HIGH HILL.

THIS WARNING INCLUDES DEUTSCHHEIM HISTORIC SITE AND GRAHAM CAVE STATE
PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 70 IN MISSOURI FROM EXIT 161 TO EXIT 179.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3906 9167 3906 9163 3907 9163 3903 9126
      3893 9126 3885 9131 3884 9142 3870 9141
      3856 9151 3865 9180
TIME...MOT...LOC 2254Z 199DEG 57KT 3873 9152

HAIL...1.00IN
WIND...<50MPH

$$

KANOFSKY

153 
WWUS53 KLSX 102258
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
558 PM CDT WED APR 10 2013

MOC027-073-139-151-102330-
/O.CON.KLSX.SV.W.0021.000000T0000Z-130410T2330Z/
CALLAWAY MO-GASCONADE MO-MONTGOMERY MO-OSAGE MO-
558 PM CDT WED APR 10 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
OSAGE...MONTGOMERY...GASCONADE AND EASTERN CALLAWAY COUNTIES UNTIL
630 PM CDT...

AT 553 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES WEST OF
HERMANN...AND MOVING NORTH AT 50 MPH.

HAZARD...GOLF BALL SIZE HAIL.

SOURCE...TRAINED WEATHER SPOTTERS REPORTED GOLF BALL SIZE HAIL NEAR  
         FREDERICKSBURG. 

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT DAMAGE
         TO ROOFS...SIDING...WINDOWS...VEHICLES AND CROPS.

LOCATIONS IMPACTED INCLUDE...
MONTGOMERY CITY...BIG SPRING...WILLIAMSBURG...MINEOLA...NEW
FLORENCE...BELLFLOWER...BUELL...MCKITTRICK...AMERICUS...DANVILLE AND
HIGH HILL.

THIS WARNING INCLUDES DEUTSCHHEIM HISTORIC SITE AND GRAHAM CAVE STATE
PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 70 IN MISSOURI FROM EXIT 161 TO EXIT 179.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3906 9167 3906 9163 3907 9163 3903 9126
      3893 9126 3885 9131 3884 9142 3870 9141
      3856 9151 3865 9180
TIME...MOT...LOC 2258Z 197DEG 44KT 3873 9153

HAIL...1.75IN
WIND...<50MPH

$$

KANOFSKY

039 
WWUS53 KLSX 102309
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
609 PM CDT WED APR 10 2013

MOC027-073-151-102318-
/O.CAN.KLSX.SV.W.0021.000000T0000Z-130410T2330Z/
CALLAWAY MO-GASCONADE MO-OSAGE MO-
609 PM CDT WED APR 10 2013

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

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 3905 9164 3907 9163 3903 9127 3892 9126
      3885 9131 3884 9142 3871 9142 3871 9144
      3876 9165
TIME...MOT...LOC 2308Z 197DEG 44KT 3885 9148

$$

MOC139-102330-
/O.CON.KLSX.SV.W.0021.000000T0000Z-130410T2330Z/
MONTGOMERY MO-
609 PM CDT WED APR 10 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR MONTGOMERY
COUNTY UNTIL 630 PM CDT...

AT 606 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR BIG SPRING...
AND MOVING NORTH AT 50 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...TRAINED WEATHER SPOTTERS REPORTED 1 INCH HAIL NEAR          
         RHINELAND.

IMPACT...DAMAGE TO VEHICLES AND CROPS IS EXPECTED.

LOCATIONS IMPACTED INCLUDE...
MONTGOMERY CITY...MINEOLA...NEW FLORENCE...BELLFLOWER...BUELL...
DANVILLE AND HIGH HILL.

THIS WARNING INCLUDES GRAHAM CAVE STATE PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 70 IN MISSOURI FROM EXIT 170 TO EXIT 179.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3905 9164 3907 9163 3903 9127 3892 9126
      3885 9131 3884 9142 3871 9142 3871 9144
      3876 9165
TIME...MOT...LOC 2308Z 197DEG 44KT 3885 9148

HAIL...1.00IN
WIND...<50MPH

$$

KANOFSKY

927 
WWUS53 KLSX 102322
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
622 PM CDT WED APR 10 2013

MOC139-102332-
/O.EXP.KLSX.SV.W.0021.000000T0000Z-130410T2330Z/
MONTGOMERY MO-
622 PM CDT WED APR 10 2013

...THE SEVERE THUNDERSTORM WARNING FOR MONTGOMERY COUNTY WILL EXPIRE
AT 630 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER SMALL HAIL AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 3905 9164 3907 9163 3903 9127 3892 9126
      3885 9131 3884 9142 3871 9142 3871 9144
      3876 9165
TIME...MOT...LOC 2322Z 197DEG 44KT 3901 9141

$$

KANOFSKY

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 2:43 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Saint Louis, Warren	47 min
Apr 10, 3:16 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	44 min
Apr 10, 3:45 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	45 min
Apr 10, 4:48 PM CDT	Severe Thunderstorm Warning	LSX	Gasconade, Osage	27 min
Apr 10, 5:06 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	39 min
Apr 10, 5:17 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade	43 min
Apr 10, 5:28 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Monroe, Pike, Ralls	47 min
Apr 10, 6:27 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway, Cole, Gasconade, Monroe and 2 more	48 min
Apr 10, 6:46 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Charles, Saint Louis	44 min
Apr 10, 6:51 PM CDT	Areal Flood Advisory	LSX	Audrain, Boone, Callaway, Cole, Moniteau, Osage	6 hr
Apr 10, 6:54 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Franklin, Gasconade, Lincoln, Montgomery, Warren	51 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2013 Every severe thunderstorm warning in 2013

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.