Alert archive / Missouri / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 72, NWS St. Louis, MO

April 19, 201110 counties in Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 19, 2011, 3:57 AM CDT for 10 counties in Missouri. It was in force for 48 min. 8 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 19, 2011, 3:57 AM CDT (08:57 UTC)
Expired: Apr 19, 2011, 4:45 AM CDT
In force: 48 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.75 in
Wind: 50.0 mph

Counties Audrain County, MO, Boone County, MO, Callaway County, MO, Cole County, MO, Franklin County, MO, Gasconade County, MO, Moniteau County, MO, Montgomery County, MO, Osage County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 117 km from the middle of the area, began a volume at 08:59 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 19, 4:03 AM CDT	HAIL 0.5	Fulton, MO	HAIL OCCURED AT BOTH HOLT SUMMIT AND NEW BLOOMFIELD.
Apr 19, 4:05 AM CDT	HAIL 0.88	5 Ese Columbia, MO
Apr 19, 4:05 AM CDT	HAIL 1	2 Ssw Holts Summit, MO
Apr 19, 4:45 AM CDT	HAIL 0.5	Drake, MO	HAIL OCCURRING NOW.
Apr 19, 4:45 AM CDT	HAIL 0.75	Rosebud, MO
Apr 19, 4:51 AM CDT	HAIL 0.7	2 Nw Hermann, MO
Apr 19, 4:55 AM CDT	HAIL 1	Pershing, MO
Apr 19, 4:55 AM CDT	HAIL 1.75	2 N Kingdom City, 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.

Issued	Product	Office	Lasted
Apr 19, 3:11 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 9.0 hours before the alert went out and 262 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: 554 J/kg
Mixed-layer CIN: -117 J/kg
Mixed-layer LCL: 1071 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 259 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

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

059 
WUUS53 KLSX 190857
SVRLSX
MOC007-019-027-051-071-073-135-139-151-219-190945-
/O.NEW.KLSX.SV.W.0072.110419T0857Z-110419T0945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
357 AM CDT TUE APR 19 2011

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN AUDRAIN COUNTY IN CENTRAL MISSOURI...
  BOONE COUNTY IN CENTRAL MISSOURI...
  CALLAWAY COUNTY IN CENTRAL MISSOURI...
  NORTHERN COLE COUNTY IN CENTRAL MISSOURI...
  NORTHWESTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
  GASCONADE COUNTY IN EAST CENTRAL MISSOURI...
  NORTHEASTERN MONITEAU COUNTY IN CENTRAL MISSOURI...
  MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...
  OSAGE COUNTY IN CENTRAL MISSOURI...
  SOUTHERN WARREN COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 445 AM CDT

* AT 355 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING GOLF BALL SIZE
  HAIL.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 7
  MILES NORTHWEST OF JAMESTOWN...THROUGH JEFFERSON CITY...TO
  BLAND...AND MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ASHLAND...JEFFERSON CITY...COLUMBIA...FULTON...HERMANN...NEW
  HAVEN...CENTRALIA...  EASLEY...LAKE MYKEE...MOUNT STERLING...NEW 
  BLOOMFIELD...ROCHEPORT...ROSEBUD...DRAKE...GERALD...
  MIDWAY...CHAMOIS. ..MURRY...HALLSVILLE...TRELOAR AND BIG SPRING.

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.

&&

LAT...LON 3891 9251 3893 9251 3897 9257 3900 9257
      3916 9249 3926 9240 3925 9233 3930 9231
      3868 9097 3867 9097 3866 9097 3819 9157
      3823 9166 3828 9166 3829 9176 3872 9261
TIME...MOT...LOC 0855Z 224DEG 33KT 3885 9256 3839 9157
WIND...HAIL <50MPH 1.75IN

$$

TRUETT

3 follow-up statements

772 
WWUS53 KLSX 190918
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
418 AM CDT TUE APR 19 2011

MOC051-135-190926-
/O.CAN.KLSX.SV.W.0072.000000T0000Z-110419T0945Z/
COLE MO-MONITEAU MO-
418 AM CDT TUE APR 19 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MONITEAU AND
NORTHERN COLE COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA.

LAT...LON 3900 9257 3916 9249 3926 9240 3925 9233
      3930 9231 3868 9097 3866 9097 3819 9157
      3823 9166 3828 9166 3847 9176 3855 9203
      3859 9196 3856 9203 3858 9215 3897 9257
TIME...MOT...LOC 0916Z 224DEG 33KT 3899 9239 3864 9169
          3839 9140

$$

MOC007-019-027-071-073-139-151-219-190945-
/O.CON.KLSX.SV.W.0072.000000T0000Z-110419T0945Z/
FRANKLIN MO-OSAGE MO-GASCONADE MO-WARREN MO-CALLAWAY MO-MONTGOMERY MO-
BOONE MO-AUDRAIN MO-
418 AM CDT TUE APR 19 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
AUDRAIN...BOONE...MONTGOMERY...CALLAWAY...SOUTHERN WARREN...
GASCONADE...NORTHEASTERN OSAGE AND NORTHWESTERN FRANKLIN COUNTIES
UNTIL 445 AM CDT...

AT 412 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PING PONG BALL SIZE
HAIL.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM MIDWAY
TO 5 MILES SOUTHEAST OF CHAMOIS TO ROSEBUD...MOVING NORTHEAST AT 40
MPH.

LOCATIONS IMPACTED INCLUDE...
  FULTON...HERMANN...NEW HAVEN...CENTRALIA...DRAKE...COLUMBIA...
  GERALD...  MURRY...HALLSVILLE...STURGEON...
  BIG SPRING...WILLIAMSBURG...AUXVASSE...
  MINEOLA...TRELOAR...SHAMROCK...NEW  FLORENCE...
  MARTHASVILLE...PORTLAND...MORRISON AND HARRISBURG.

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.

&&

LAT...LON 3900 9257 3916 9249 3926 9240 3925 9233
      3930 9231 3868 9097 3866 9097 3819 9157
      3823 9166 3828 9166 3847 9176 3855 9203
      3859 9196 3856 9203 3858 9215 3897 9257
TIME...MOT...LOC 0916Z 224DEG 33KT 3899 9239 3864 9169
          3839 9140
WIND...HAIL <50MPH 1.50IN

$$

TRUETT

434 
WWUS53 KLSX 190929
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
429 AM CDT TUE APR 19 2011

MOC007-019-027-071-073-139-151-219-190945-
/O.CON.KLSX.SV.W.0072.000000T0000Z-110419T0945Z/
FRANKLIN MO-OSAGE MO-GASCONADE MO-WARREN MO-CALLAWAY MO-MONTGOMERY 
MO-BOONE MO-AUDRAIN MO-
429 AM CDT TUE APR 19 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
AUDRAIN...BOONE...MONTGOMERY...CALLAWAY...SOUTHERN WARREN...
GASCONADE...NORTHEASTERN OSAGE AND NORTHWESTERN FRANKLIN COUNTIES
UNTIL 445 AM CDT...

AT 425 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PING PONG BALL SIZE
HAIL.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM COLUMBIA
TO 8 MILES EAST OF CHAMOIS TO GERALD...MOVING NORTHEAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  HERMANN...NEW HAVEN...CENTRALIA...MURRY...HALLSVILLE...BIG
  SPRING...WILLIAMSBURG...AUXVASSE...MINEOLA...TRELOAR...SHAMROCK...
  MARTHASVILLE...STURGEON...RHINELAND...AMERICUS...KINGDOM CITY...
  MCKITTRICK...HATTON...LYON AND BERGER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3900 9257 3916 9249 3926 9240 3925 9233
      3930 9231 3868 9097 3866 9097 3819 9157
      3823 9166 3828 9166 3847 9176 3855 9203
      3859 9196 3856 9203 3858 9215 3897 9257
TIME...MOT...LOC 0928Z 224DEG 33KT 3900 9226 3872 9159
          3844 9131
WIND...HAIL <50MPH 1.50IN

$$

BRITT

358 
WWUS53 KLSX 190946
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
446 AM CDT TUE APR 19 2011

MOC007-019-027-071-073-139-151-219-190955-
/O.EXP.KLSX.SV.W.0072.000000T0000Z-110419T0945Z/
FRANKLIN MO-OSAGE MO-GASCONADE MO-WARREN MO-CALLAWAY MO-MONTGOMERY 
MO-BOONE MO-AUDRAIN MO-
446 AM CDT TUE APR 19 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN AUDRAIN...
BOONE...MONTGOMERY...CALLAWAY...SOUTHERN WARREN...GASCONADE...
NORTHEASTERN OSAGE AND NORTHWESTERN FRANKLIN COUNTIES HAS EXPIRED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.

A NEW WARNING HAS JUST BEEN ISSUED FOR PARTS OF FRANKLIN... 
GASCONADE...MONTGOMERY AND WARREN COUNTIES UNTIL 530 AM FOR ANOTHER 
SEVERE THUNDERSTORM.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 11 AM CDT.

LAT...LON 3900 9257 3916 9249 3926 9240 3925 9233
      3930 9231 3868 9097 3866 9097 3819 9157
      3823 9166 3828 9166 3847 9176 3855 9203
      3859 9196 3856 9203 3858 9215 3897 9257
TIME...MOT...LOC 0945Z 224DEG 33KT 3911 9212 3883 9145
          3855 9117

$$

BRITT

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 19, 2:51 AM CDT	Severe Thunderstorm Warning	LSX	Cole, Moniteau, Osage	39 min
Apr 19, 3:19 AM CDT	Severe Thunderstorm Warning	LSX	Boone, Callaway, Cole, Moniteau, Osage	41 min
Apr 19, 3:26 AM CDT	Severe Thunderstorm Warning	LSX	Callaway, Gasconade, Osage	49 min
Apr 19, 3:39 AM CDT	Severe Thunderstorm Warning	LSX	Moniteau	21 min
Apr 19, 4:35 AM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Pike	40 min
Apr 19, 4:43 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Montgomery, Warren	47 min
Apr 19, 4:58 AM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade, Washington	32 min
Apr 19, 5:23 AM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Saint Charles, Warren, Washington	37 min
Apr 19, 5:43 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Charles, Saint Louis, Washington	47 min
Apr 19, 6:21 AM CDT	Areal Flood Advisory	LSX	Jefferson, Saint Charles, Saint Louis, City of Saint Louis	3 hr
Apr 19, 6:22 AM CDT	Severe Thunderstorm Warning	LSX	Jefferson	38 min
Apr 19, 6:26 AM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis, City of Saint Louis	49 min
Apr 19, 7:08 AM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis, City of Saint Louis	37 min
Apr 19, 8:05 AM CDT	River Flood Warning	LSX	Saint Charles	30 hr
Apr 19, 11:06 AM CDT	River Flood Warning	LSX	Lincoln	19 days
Apr 19, 11:33 AM CDT	River Flood Warning	LSX	Jefferson, Saint Louis	30 days
Apr 19, 3:46 PM CDT	Severe Thunderstorm Warning	LSX	Pike, Ralls	44 min
Apr 19, 3:48 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Montgomery, Pike	42 min
Apr 19, 3:54 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Callaway, Cole, Osage	51 min
Apr 19, 3:59 PM CDT	Tornado Warning	LSX	Pike	46 min
Apr 19, 4:24 PM CDT	Severe Thunderstorm Warning	LSX	Cole, Franklin, Gasconade, Osage	51 min
Apr 19, 4:31 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Montgomery, Warren	44 min
Apr 19, 4:31 PM CDT	Tornado Warning	LSX	Pike	44 min
Apr 19, 4:41 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	49 min
Apr 19, 5:01 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Saint Charles, Warren	44 min
Apr 19, 5:13 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Montgomery, Saint Charles, Warren	47 min
Apr 19, 5:28 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	47 min
Apr 19, 5:44 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln	34 min
Apr 19, 5:56 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Warren	34 min
Apr 19, 5:58 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade	32 min
Apr 19, 6:12 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Saint Louis, Warren	48 min
Apr 19, 6:14 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Warren	31 min
Apr 19, 6:15 PM CDT	Severe Thunderstorm Warning	LSX	Reynolds	60 min
Apr 19, 6:30 PM CDT	Flash Flood Warning	LSX	Saint Charles	3 hr
Apr 19, 6:37 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Madison, Reynolds, Saint Francois, Washington	53 min
Apr 19, 6:45 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles	30 min
Apr 19, 6:51 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	39 min
Apr 19, 6:56 PM CDT	Areal Flood Advisory	LSX	Franklin, Warren	5 hr
Apr 19, 6:56 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis, City of Saint Louis	64 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.