Alert archive / Missouri / Tornado Warnings in 2011

Tornado Warning 18, NWS Springfield, MO

April 22, 20114 counties in Missouri

NWS Springfield, MO issued this tornado warning at Apr 22, 2011, 6:30 PM CDT for 4 counties in Missouri. It was in force for 45 min. 5 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, 6:30 PM CDT (23:30 UTC)
Expired: Apr 22, 2011, 7:15 PM CDT
In force: 45 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon

Counties Barry County, MO, Christian County, MO, Lawrence County, MO, Stone County, MO

The radar

The Springfield radar (KSGF), 31 km from the middle of the area, began a volume at 23:32 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, 6:55 PM CDT	HAIL 0.88	3 Ssw Boaz, MO	NICKEL SIZED HAIL REPORTED AT INTERSECTION OF M HIGHWAY AND N HIGHWAY.
Apr 22, 7:05 PM CDT	HAIL 1.75	2 Sw Nixa, MO
Apr 22, 7:06 PM CDT	TSTM WND DMG	1 E Nixa, MO	A TREE WAS BLOWN DOWN ONE MILE EAST OF NIXA ON HIGHWAY 14.
Apr 22, 7:10 PM CDT	HAIL 0.88	Ozark, MO
Apr 22, 7:14 PM CDT	HAIL 1	Ozark, 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 22, 3:34 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.5 hours before the alert went out and 29 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.

581 
WFUS53 KSGF 222330
TORSGF
MOC009-043-109-209-230015-
/O.NEW.KSGF.TO.W.0018.110422T2330Z-110423T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
630 PM CDT FRI APR 22 2011

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN BARRY COUNTY IN SOUTHWEST MISSOURI...
  NORTHERN STONE COUNTY IN SOUTHWEST MISSOURI...
  SOUTHEASTERN LAWRENCE COUNTY IN SOUTHWEST MISSOURI...
  WESTERN CHRISTIAN COUNTY IN SOUTHWEST MISSOURI...

* UNTIL 715 PM CDT.

* AT 628 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO NEAR MADRY...OR 7 MILES SOUTH OF AURORA...MOVING EAST AT 40
  MPH. THIS STORM HAS A HISTORY OF PRODUCING A FUNNEL CLOUD.

* LOCATIONS IMPACTED INCLUDE AURORA...BOAZ...CHESTNUTRIDGE...
  CLEVER...CRANE...ELSEY...FREMONT HILLS...HIGHLANDVILLE...HURLEY...
  MADRY...MARIONVILLE...NIXA...OZARK...PONCE DE LEON...SELMORE...
  SPOKANE AND WHEELERVILLE.

IN ADDITION TO A TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE
DAMAGING HAIL UP TO GOLF BALL SIZE...AND DESTRUCTIVE STRAIGHT LINE
WINDS IN EXCESS OF 70 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 3698 9376 3710 9318 3709 9318 3682 9320
      3680 9379
TIME...MOT...LOC 2330Z 257DEG 35KT 3687 9368
HAIL 1.75IN

$$

SCHAUMANN

1 follow-up statement

982 
WWUS53 KSGF 222355
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
655 PM CDT FRI APR 22 2011

MOC009-109-230004-
/O.CAN.KSGF.TO.W.0018.000000T0000Z-110423T0015Z/
BARRY MO-LAWRENCE MO-
655 PM CDT FRI APR 22 2011

...THE TORNADO WARNING FOR SOUTHEASTERN LAWRENCE AND NORTHEASTERN
BARRY COUNTIES IS CANCELLED...

THE THREAT FOR A TORNADO HAS SHIFTED EAST INTO NORTHERN STONE AND 
CHRISTIAN COUNTIES. 

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FRIDAY EVENING
FOR SOUTHERN MISSOURI.

&&

LAT...LON 3685 9356 3700 9361 3701 9361 3710 9320
      3709 9318 3682 9320
TIME...MOT...LOC 2354Z 257DEG 35KT 3693 9342

$$

MOC043-209-230015-
/O.CON.KSGF.TO.W.0018.000000T0000Z-110423T0015Z/
CHRISTIAN MO-STONE MO-
655 PM CDT FRI APR 22 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR NORTHERN
STONE AND WESTERN CHRISTIAN COUNTIES...

AT 651 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO NEAR HURLEY...OR 10 MILES WEST OF HIGHLANDVILLE...
MOVING EAST AT 40 MPH. THIS STORM HAS A HISTORY OF PRODUCING FUNNEL 
CLOUDS.

LOCATIONS IMPACTED INCLUDE BOAZ...CHESTNUTRIDGE...CLEVER...CRANE...
ELSEY...EXTREME SOUTHEASTERN SPRINGFIELD...FREMONT HILLS...
HIGHLANDVILLE...HURLEY...NIXA...OZARK...PONCE DE LEON...SELMORE AND
SPOKANE.

IN ADDITION TO A TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE
DAMAGING HAIL UP TO GOLF BALL SIZE...AND DESTRUCTIVE STRAIGHT LINE
WINDS IN EXCESS OF 70 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF AVAILABLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.

&&

LAT...LON 3685 9356 3700 9361 3701 9361 3710 9320
      3709 9318 3682 9320
TIME...MOT...LOC 2354Z 257DEG 35KT 3693 9342
HAIL 1.75IN

$$

SCHAUMANN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 21, 7:25 PM CDT	Flash Flood Warning	SGF	Barry, McDonald	6 hr
Apr 21, 7:52 PM CDT	Special Weather Statement	SGF	Barry	23 min
Apr 21, 8:18 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Stone, Taney	16 min
Apr 22, 12:56 AM CDT	Areal Flood Warning	SGF	Barry, McDonald	16 hr
Apr 22, 2:22 AM CDT	Special Weather Statement	SGF	Maries	38 min
Apr 22, 8:01 AM CDT	Areal Flood Warning	SGF	Douglas, Howell, Oregon, Ozark, Shannon, Texas and 1 more	5 hr
Apr 22, 10:14 AM CDT	River Flood Warning	SGF	Shannon	15 hr
Apr 22, 10:44 AM CDT	River Flood Warning	SGF	Pulaski	8 days
Apr 22, 1:01 PM CDT	Areal Flood Warning	SGF	Douglas, Howell, Oregon, Shannon	4 hr
Apr 22, 3:48 PM CDT	Severe Thunderstorm Warning	SGF	Barton, Dade, Jasper, Lawrence	42 min
Apr 22, 4:10 PM CDT	Special Weather Statement	SGF	Morgan	35 min
Apr 22, 4:16 PM CDT	Severe Thunderstorm Warning	SGF	Morgan	32 min
Apr 22, 4:23 PM CDT	Severe Thunderstorm Warning	SGF	Dade, Greene, Jasper, Lawrence	52 min
Apr 22, 4:26 PM CDT	Severe Thunderstorm Warning	SGF	Benton, Camden	64 min
Apr 22, 4:27 PM CDT	Severe Thunderstorm Warning	SGF	Barry, Lawrence, McDonald, Newton	48 min
Apr 22, 4:45 PM CDT	Severe Thunderstorm Warning	SGF	Camden, Miller, Morgan	45 min
Apr 22, 4:56 PM CDT	Severe Thunderstorm Warning	SGF	Dallas, Hickory, Polk	38 min
Apr 22, 5:05 PM CDT	Severe Thunderstorm Warning	SGF	Phelps	25 min
Apr 22, 5:09 PM CDT	Severe Thunderstorm Warning	SGF	Dade, Greene, Lawrence, Polk	51 min
Apr 22, 5:13 PM CDT	Severe Thunderstorm Warning	SGF	Barry, Lawrence, McDonald, Newton	47 min
Apr 22, 5:25 PM CDT	Severe Thunderstorm Warning	SGF	Camden, Miller, Morgan	53 min
Apr 22, 5:29 PM CDT	Severe Thunderstorm Warning	SGF	Camden, Hickory	31 min
Apr 22, 5:45 PM CDT	Severe Thunderstorm Warning	SGF	Dallas, Greene, Laclede, Polk, Webster	60 min
Apr 22, 5:54 PM CDT	Tornado Warning	SGF	Barry, Lawrence, Newton	51 min
Apr 22, 6:16 PM CDT	Severe Thunderstorm Warning	SGF	Douglas, Howell, Oregon, Ozark, Shannon, Texas	59 min
Apr 22, 6:22 PM CDT	Severe Thunderstorm Warning	SGF	Greene, Laclede, Webster, Wright	53 min
Apr 22, 6:27 PM CDT	Tornado Warning	SGF	Webster, Wright	48 min
Apr 22, 6:40 PM CDT	Severe Thunderstorm Warning	SGF	Dade, Greene, Polk	50 min
Apr 22, 6:49 PM CDT	Severe Thunderstorm Warning	SGF	Laclede, Phelps, Pulaski, Texas, Wright	25 min
Apr 22, 6:57 PM CDT	Severe Thunderstorm Warning	SGF	Lawrence	29 min
Apr 22, 6:58 PM CDT	Tornado Warning	SGF	Laclede, Texas, Webster, Wright	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.