Alert archive / Missouri / Tornado Warnings in 2011

Tornado Warning 41, NWS St. Louis, MO

April 22, 2011Boone County, Callaway County, Cole County, Missouri

NWS St. Louis, MO issued this tornado warning at Apr 22, 2011, 5:12 PM CDT for Boone County, Callaway County, Cole County, Missouri. It was in force for 48 min. 14 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 22, 2011, 5:12 PM CDT (22:12 UTC)
Expired: Apr 22, 2011, 6:00 PM CDT
In force: 48 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

Counties Boone County, MO, Callaway County, MO, Cole County, MO

The radar

The St Louis radar (KLSX), 136 km from the middle of the area, began a volume at 22:13 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 22, 5:23 PM CDT	HAIL 0.88	2 W Ashland, MO
Apr 22, 5:32 PM CDT	HAIL 1.75	Ashland, MO	REPORT FROM ASHLAND PD...RELAYED BY COLUMBIA EOC
Apr 22, 5:34 PM CDT	HAIL 0.88	1 W Guthrie, MO
Apr 22, 5:35 PM CDT	HAIL 2	2 Ne Hartsburg, MO
Apr 22, 5:37 PM CDT	FUNNEL CLOUD	1 N Holts Summit, MO
Apr 22, 5:39 PM CDT	FUNNEL CLOUD	New Bloomfield, MO	TRAINED SPOTTER FOR SHERIFF OFFICE REPORTS FUNNEL CLOUD JUST WEST OF ROUTE MM
Apr 22, 5:42 PM CDT	HAIL 0.88	2 S Fulton, MO
Apr 22, 5:47 PM CDT	HAIL 0.25	New Bloomfield, MO
Apr 22, 5:47 PM CDT	HAIL 1.5	3 E New Bloomfield, MO
Apr 22, 5:51 PM CDT	FUNNEL CLOUD	8 E Holts Summit, MO	SPOTTER 2 MILES NORTH OF TABBETTS REPORTS A FUNNEL CLOUD 3 MILES NORTH OF HIS LOCATION GOING UP AND DOWN
Apr 22, 5:51 PM CDT	HAIL 1	2 S Fulton, MO	HAIL OBSERVED ON HIGHWAY 54
Apr 22, 5:52 PM CDT	FUNNEL CLOUD	3 E New Bloomfield, MO
Apr 22, 5:53 PM CDT	HAIL 0.25	Fulton, MO
Apr 22, 5:56 PM CDT	HAIL 0.7	Fulton, MO	ON NORTH SIDE OF 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
Apr 22, 3:34 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 10.2 hours before the alert went out and 247 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: 148 J/kg
Mixed-layer CIN: -391 J/kg
Mixed-layer LCL: 454 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 516 m²/s²
0-3 km storm-relative helicity: 554 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

490 
WFUS53 KLSX 222212
TORLSX
MOC019-027-051-222300-
/O.NEW.KLSX.TO.W.0041.110422T2212Z-110422T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
512 PM CDT FRI APR 22 2011

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN BOONE COUNTY IN CENTRAL MISSOURI...
  SOUTHWESTERN CALLAWAY COUNTY IN CENTRAL MISSOURI...
  NORTH CENTRAL COLE COUNTY IN CENTRAL MISSOURI...

* UNTIL 600 PM CDT

* AT 510 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR MCGIRK...OR 7 MILES NORTHEAST OF
  CALIFORNIA...AND MOVING EAST AT 40 MPH.

  IN ADDITION...THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL.

* LOCATIONS IMPACTED INCLUDE...
  ASHLAND...HOLTS SUMMIT...FULTON...EASLEY...LAKE MYKEE...NEW
  BLOOMFIELD...WILTON...HARTSBURG...GUTHRIE...CARRINGTON AND
  TEBBETTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3879 9239 3882 9240 3891 9195 3862 9192
      3859 9229 3877 9241
TIME...MOT...LOC 2212Z 261DEG 37KT 3867 9243

$$

GLASS

4 follow-up statements

350 
WWUS53 KLSX 222227
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
527 PM CDT FRI APR 22 2011

MOC019-027-051-222300-
/O.CON.KLSX.TO.W.0041.000000T0000Z-110422T2300Z/
COLE MO-CALLAWAY MO-BOONE MO-
527 PM CDT FRI APR 22 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN BOONE...
SOUTHWESTERN CALLAWAY AND NORTH CENTRAL COLE COUNTIES UNTIL 600 PM
CDT...

AT 525 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 6 MILES SOUTH OF ASHLAND...MOVING EAST AT 30 MPH.

IN ADDITION...LARGE HAIL TO THE SIZE OF TENNIS BALLS IS LIKELY WITH 
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  ASHLAND...HOLTS SUMMIT...FULTON...LAKE MYKEE...NEW BLOOMFIELD...
  GUTHRIE...CARRINGTON AND TEBBETTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3879 9239 3882 9240 3891 9195 3862 9192
      3859 9229 3877 9241
TIME...MOT...LOC 2227Z 265DEG 28KT 3869 9228

$$

GLASS

829 
WWUS53 KLSX 222237
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
537 PM CDT FRI APR 22 2011

MOC019-027-051-222300-
/O.CON.KLSX.TO.W.0041.000000T0000Z-110422T2300Z/
COLE MO-CALLAWAY MO-BOONE MO-
537 PM CDT FRI APR 22 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN BOONE...
SOUTHWESTERN CALLAWAY AND NORTH CENTRAL COLE COUNTIES UNTIL 600 PM
CDT...

AT 533 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 6 MILES SOUTH OF ASHLAND...MOVING EAST AT 30 MPH.

IN ADDITION...LARGE HAIL TO THE SIZE OF TENNIS BALLS WILL ACCOMPANY 
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  HOLTS SUMMIT...FULTON...LAKE MYKEE...NEW BLOOMFIELD...GUTHRIE...
  CARRINGTON AND TEBBETTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3869 9232 3876 9232 3881 9226 3891 9195
      3862 9192 3859 9229
TIME...MOT...LOC 2236Z 265DEG 28KT 3870 9219

$$

GLASS

563 
WWUS53 KLSX 222245
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
545 PM CDT FRI APR 22 2011

MOC019-051-222255-
/O.CAN.KLSX.TO.W.0041.000000T0000Z-110422T2300Z/
COLE MO-BOONE MO-
545 PM CDT FRI APR 22 2011

...THE TORNADO WARNING FOR SOUTHEASTERN BOONE AND NORTH CENTRAL COLE
COUNTIES IS CANCELLED...

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

LAT...LON 3877 9218 3877 9216 3878 9216 3881 9214
      3883 9215 3891 9195 3862 9192 3862 9217
      3874 9219
TIME...MOT...LOC 2245Z 265DEG 33KT 3871 9206

$$

MOC027-222300-
/O.CON.KLSX.TO.W.0041.000000T0000Z-110422T2300Z/
CALLAWAY MO-
545 PM CDT FRI APR 22 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHWESTERN CALLAWAY
COUNTY UNTIL 600 PM CDT...

AT 542 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR NEW BLOOMFIELD...OR NEAR HOLTS SUMMIT...MOVING
EAST AT 40 MPH.

IN ADDITION...THERE IS A HISTORY OF LARGE DAMAGING HAIL WITH THIS 
STORM.

LOCATIONS IMPACTED INCLUDE...
  FULTON...CARRINGTON AND TEBBETTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3877 9218 3877 9216 3878 9216 3881 9214
      3883 9215 3891 9195 3862 9192 3862 9217
      3874 9219
TIME...MOT...LOC 2245Z 265DEG 33KT 3871 9206

$$

GLASS

823 
WWUS53 KLSX 222302
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
602 PM CDT FRI APR 22 2011

MOC027-222311-
/O.EXP.KLSX.TO.W.0041.000000T0000Z-110422T2300Z/
CALLAWAY MO-
602 PM CDT FRI APR 22 2011

...THE TORNADO WARNING FOR SOUTHWESTERN CALLAWAY COUNTY HAS
EXPIRED...

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN CALLAWAY 
COUNTY...

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

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 1000 PM.

LAT...LON 3877 9218 3877 9216 3878 9216 3881 9214
      3883 9215 3891 9195 3862 9192 3862 9217
      3874 9219
TIME...MOT...LOC 2245Z 265DEG 33KT 3871 9206

$$

GLASS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 21, 9:24 PM CDT	River Flood Warning	LSX	Gasconade, Montgomery	11 days
Apr 21, 10:14 PM CDT	River Flood Warning	LSX	Reynolds	9 days
Apr 22, 7:12 AM CDT	Areal Flood Advisory	LSX	Sainte Genevieve, Saint Francois	3 hr
Apr 22, 7:17 AM CDT	Areal Flood Advisory	LSX	Jefferson	3 hr
Apr 22, 7:28 AM CDT	Flash Flood Warning	LSX	Jefferson, Sainte Genevieve, Saint Francois, Washington	6 hr
Apr 22, 8:47 AM CDT	Severe Thunderstorm Warning	LSX	Boone, Callaway, Cole, Moniteau, Osage	43 min
Apr 22, 9:16 AM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Pike	44 min
Apr 22, 9:28 AM CDT	Severe Thunderstorm Warning	LSX	Callaway, Lincoln, Montgomery, Pike, Warren	47 min
Apr 22, 9:32 AM CDT	Severe Thunderstorm Warning	LSX	Callaway, Cole, Franklin, Gasconade, Lincoln, Montgomery and 2 more	43 min
Apr 22, 9:36 AM CDT	Flash Flood Warning	LSX	Marion, Monroe, Ralls, Shelby	3 hr
Apr 22, 9:59 AM CDT	Severe Thunderstorm Warning	LSX	Lincoln	46 min
Apr 22, 10:17 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Jefferson, Lincoln, Montgomery, Saint Charles and 2 more	43 min
Apr 22, 10:56 AM CDT	Severe Thunderstorm Warning	LSX	Saint Louis, City of Saint Louis	49 min
Apr 22, 11:00 AM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Jefferson, Saint Charles, Saint Louis, Warren and 2 more	45 min
Apr 22, 11:44 AM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Saint Louis, City of Saint Louis	46 min
Apr 22, 12:34 PM CDT	River Flood Warning	LSX	Saint Charles	26 hr
Apr 22, 2:39 PM CDT	River Flood Warning	LSX	Marion	37 hr
Apr 22, 4:32 PM CDT	Severe Thunderstorm Warning	LSX	Cole, Moniteau	43 min
Apr 22, 4:40 PM CDT	Tornado Warning	LSX	Cole, Moniteau	50 min
Apr 22, 5:10 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade	39 min
Apr 22, 5:49 PM CDT	Tornado Warning	LSX	Callaway, Gasconade, Montgomery, Osage	41 min
Apr 22, 6:05 PM CDT	Severe Thunderstorm Warning	LSX	Cole, Osage	40 min
Apr 22, 6:22 PM CDT	Tornado Warning	LSX	Franklin, Gasconade, Lincoln, Montgomery, Warren	38 min
Apr 22, 6:36 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Osage	39 min
Apr 22, 6:55 PM CDT	Tornado Warning	LSX	Lincoln, Saint Charles, Saint Louis, Warren	50 min
Apr 22, 6:58 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	47 min

Nearby

Tornado Warnings in Missouri, 2011 Every tornado warning in 2011 Tornadoes 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.