Alert archive / Missouri / Tornado Warnings in 2011

Tornado Warning 44, NWS Springfield, MO

May 23, 2011Howell County, Oregon County, Shannon County, Missouri

NWS Springfield, MO issued this tornado warning at May 23, 2011, 1:47 PM CDT for Howell County, Oregon County, Shannon County, Missouri. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 23, 2011, 1:47 PM CDT (18:47 UTC)
Expired: May 23, 2011, 2:30 PM CDT
In force: 43 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon

Counties Howell County, MO, Oregon County, MO, Shannon County, MO

The radar

The Springfield radar (KSGF), 184 km from the middle of the area, began a volume at 18:49 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.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 6.8 hours before the alert went out and 214 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: 1041 J/kg
Mixed-layer CIN: -257 J/kg
Mixed-layer LCL: 1640 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 247 m²/s²
0-3 km storm-relative helicity: 224 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

936 
WFUS53 KSGF 231847
TORSGF
MOC091-149-203-231930-
/O.NEW.KSGF.TO.W.0044.110523T1847Z-110523T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
147 PM CDT MON MAY 23 2011

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL HOWELL COUNTY IN SOUTH CENTRAL MISSOURI...
  NORTHERN OREGON COUNTY IN SOUTH CENTRAL MISSOURI...
  SOUTH CENTRAL SHANNON COUNTY IN SOUTH CENTRAL MISSOURI...

* UNTIL 230 PM CDT.

* AT 145 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 4 MILES WEST OF BRANDSVILLE...OR 8 MILES SOUTHEAST OF WEST
  PLAINS...MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE ALTON...BRANDSVILLE...GREER...
  KOSHKONONG...ROVER...THOMASVILLE...WILDERNESS AND WINONA.

IN ADDITION TO A TORNADO...THIS STORM IS CAPABLE OF PRODUCING
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 3670 9189 3705 9130 3695 9121 3684 9122
      3683 9112 3681 9110 3674 9112 3654 9178
TIME...MOT...LOC 1848Z 242DEG 34KT 3666 9172
HAIL 1.00IN

$$

LINDENBERG

1 follow-up statement

952 
WWUS53 KSGF 231925
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
225 PM CDT MON MAY 23 2011

MOC091-149-203-231935-
/O.EXP.KSGF.TO.W.0044.000000T0000Z-110523T1930Z/
HOWELL MO-OREGON MO-SHANNON MO-
225 PM CDT MON MAY 23 2011

...THE TORNADO WARNING FOR SOUTH CENTRAL SHANNON...NORTHERN OREGON
AND EAST CENTRAL HOWELL COUNTIES WILL EXPIRE AT 230 PM CDT...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE STORM THAT
PROMPTED THE WARNING HAD WEAKENED...THUS THE WARNING HAS BEEN ALLOWED
TO EXPIRE.

LAT...LON 3670 9189 3705 9130 3695 9121 3684 9122
      3683 9112 3681 9110 3674 9112 3654 9178
TIME...MOT...LOC 1925Z 242DEG 34KT 3682 9133

$$

LINDENBERG

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 7:01 PM CDT	Tornado Warning	SGF	McDonald	44 min
May 22, 7:06 PM CDT	Severe Thunderstorm Warning	SGF	Barry, McDonald, Newton	54 min
May 22, 7:08 PM CDT	Severe Thunderstorm Warning	SGF	Benton, Miller, Morgan	67 min
May 22, 7:10 PM CDT	Flash Flood Warning	SGF	Barry, Christian, Lawrence, McDonald, Newton, Stone	6 hr
May 22, 7:28 PM CDT	Tornado Warning	SGF	Christian, Taney	47 min
May 22, 7:38 PM CDT	Severe Thunderstorm Warning	SGF	Greene, Webster	52 min
May 22, 7:41 PM CDT	Tornado Warning	SGF	McDonald	49 min
May 22, 7:46 PM CDT	Tornado Warning	SGF	McDonald	44 min
May 22, 8:02 PM CDT	Tornado Warning	SGF	Taney	28 min
May 22, 8:05 PM CDT	Severe Thunderstorm Warning	SGF	Douglas, Wright	40 min
May 22, 8:18 PM CDT	Severe Thunderstorm Warning	SGF	Oregon	27 min
May 22, 8:24 PM CDT	Tornado Warning	SGF	Ozark	36 min
May 22, 8:28 PM CDT	Tornado Warning	SGF	McDonald	47 min
May 22, 8:46 PM CDT	Flash Flood Warning	SGF	Ozark, Taney	6 hr
May 22, 8:49 PM CDT	Severe Thunderstorm Warning	SGF	Ozark	41 min
May 22, 8:57 PM CDT	Severe Thunderstorm Warning	SGF	McDonald	63 min
May 22, 9:01 PM CDT	Severe Thunderstorm Warning	SGF	Douglas, Howell, Ozark	44 min
May 22, 9:11 PM CDT	Severe Thunderstorm Warning	SGF	Dent, Douglas, Howell, Oregon, Shannon, Texas	64 min
May 22, 9:15 PM CDT	Tornado Warning	SGF	Douglas, Howell, Oregon, Ozark	30 min
May 22, 9:24 PM CDT	Severe Thunderstorm Warning	SGF	Howell, Oregon, Ozark	51 min
May 22, 9:57 PM CDT	Special Weather Statement	SGF	McDonald, Newton	33 min
May 22, 10:09 PM CDT	Special Weather Statement	SGF	Barry	36 min
May 22, 10:10 PM CDT	Severe Thunderstorm Warning	SGF	Oregon	35 min
May 22, 10:55 PM CDT	Severe Thunderstorm Warning	SGF	McDonald	65 min
May 22, 11:45 PM CDT	River Flood Warning	SGF	McDonald	57 hr
May 22, 11:54 PM CDT	Severe Thunderstorm Warning	SGF	McDonald	66 min
May 23, 12:50 AM CDT	Flash Flood Warning	SGF	Barry, McDonald, Newton, Stone	9 hr
May 23, 1:42 AM CDT	Special Weather Statement	SGF	Stone	48 min
May 23, 3:36 AM CDT	Flash Flood Watch	SGF	Barry, Barton, Benton, Camden, Cedar, Christian and 28 more	63 hr
May 23, 7:47 AM CDT	Special Weather Statement	SGF	Jasper	43 min
May 23, 8:15 AM CDT	Severe Thunderstorm Warning	SGF	Jasper, Newton	45 min
May 23, 8:35 AM CDT	Special Weather Statement	SGF	Vernon	40 min
May 23, 8:51 AM CDT	Severe Thunderstorm Warning	SGF	Barton, Cedar, St. Clair, Vernon	39 min
May 23, 8:56 AM CDT	Severe Thunderstorm Warning	SGF	Barry, Jasper, Lawrence, McDonald, Newton	49 min
May 23, 9:17 AM CDT	Severe Thunderstorm Warning	SGF	Cedar, Hickory, Polk, St. Clair	31 min
May 23, 9:38 AM CDT	Flash Flood Warning	SGF	Barry, Jasper, Lawrence, McDonald, Newton, Stone	8 hr
May 23, 9:43 AM CDT	Severe Thunderstorm Warning	SGF	Dallas, Hickory, Polk	18 min
May 23, 9:55 AM CDT	Severe Thunderstorm Warning	SGF	Camden, Dallas, Hickory, Laclede	36 min
May 23, 10:29 AM CDT	Severe Thunderstorm Warning	SGF	Camden, Dent, Laclede, Maries, Miller, Morgan and 3 more	45 min
May 23, 10:53 AM CDT	Severe Thunderstorm Warning	SGF	Dent, Maries, Miller, Phelps, Pulaski	44 min
May 23, 12:59 PM CDT	Special Weather Statement	SGF	Howell, Shannon	61 min
May 23, 1:09 PM CDT	Tornado Warning	SGF	Howell, Oregon, Ozark	66 min
May 23, 1:43 PM CDT	Severe Thunderstorm Warning	SGF	Shannon	20 min
May 23, 1:58 PM CDT	Severe Thunderstorm Warning	SGF	Jasper, Newton	47 min
May 23, 2:11 PM CDT	Severe Thunderstorm Warning	SGF	Oregon	33 min
May 23, 2:28 PM CDT	Severe Thunderstorm Warning	SGF	Jasper, Newton	62 min
May 23, 3:26 PM CDT	Severe Thunderstorm Warning	SGF	Barry, Barton, Dade, Jasper, Lawrence, Newton	47 min
May 23, 4:02 PM CDT	Severe Thunderstorm Warning	SGF	Barton, Jasper	41 min
May 23, 4:16 PM CDT	Severe Thunderstorm Warning	SGF	Jasper, Newton	43 min
May 23, 4:28 PM CDT	River Flood Warning	SGF	Shannon	16 hr
May 23, 4:28 PM CDT	River Flood Warning	SGF	Stone	17 hr
May 23, 5:12 PM CDT	Special Weather Statement	SGF	Jasper	33 min
May 23, 5:51 PM CDT	Flash Flood Warning	SGF	Barry, Jasper, McDonald, Newton	16 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.