Alert archive / Missouri / Tornado Warnings in 2011

Tornado Warning 24, NWS Springfield, MO

April 25, 2011Ozark County, Missouri

NWS Springfield, MO issued this tornado warning at Apr 25, 2011, 4:53 PM CDT for Ozark County, Missouri. It was in force for 37 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
Apr 25, 2011, 4:53 PM CDT (21:53 UTC)
Expired
Apr 25, 2011, 5:30 PM CDT
In force
37 min
Issued by
NWS Springfield, MO
Area
Storm-based polygon

County Ozark County, MO

The radar

The Springfield radar (KSGF), 117 km from the middle of the area, began a volume at 21:54 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 25, 3:22 PM CDTTornado Watch PDSSPC8 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 9.9 hours before the alert went out and 135 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-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 2011-04-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2011-04-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 420 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
3 J/kg
Mixed-layer CIN
-261 J/kg
Mixed-layer LCL
677 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
420 m²/s²
0-3 km storm-relative helicity
356 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

876 
WFUS53 KSGF 252153
TORSGF
MOC153-252230-
/O.NEW.KSGF.TO.W.0024.110425T2153Z-110425T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
453 PM CDT MON APR 25 2011

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* TORNADO WARNING FOR...
  OZARK COUNTY IN SOUTHWEST MISSOURI...

* UNTIL 530 PM CDT.

* AT 449 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 3 MILES SOUTH OF PONTIAC...OR 31 MILES SOUTHEAST OF
  FORSYTH...MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE BAKERSFIELD...BRIXEY...DORA...
  GAINESVILLE...HARDENVILLE...PONTIAC...ROCKBRIDGE...SYCAMORE...
  TECUMSEH...UDALL...WILLHOIT AND ZANONI.

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 3651 9265 3680 9244 3679 9212 3671 9211
      3650 9213 3649 9221
TIME...MOT...LOC 2151Z 232DEG 38KT 3648 9260
HAIL <.50IN

$$
RUNNELS
2 follow-up statements
587 
WWUS53 KSGF 252213
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
513 PM CDT MON APR 25 2011

MOC153-252230-
/O.CON.KSGF.TO.W.0024.000000T0000Z-110425T2230Z/
OZARK MO-
513 PM CDT MON APR 25 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR EASTERN
OZARK COUNTY...

AT 504 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE ROTATION WITH THE SEVERE THUNDERSTORM NEAR THE ARKANSAS 
BORDER TO THE EAST OF PONTIAC. AREAS UNDER THE GREATEST TORNADO 
THREAT INCLUDES TECUMSEH...UDALL AND BAKERSFIELD...THOUGH RESIDENTS 
FROM GAINESVILLE TO ZANONI AND SYCAMORE SHOULD SEEK SHELTER IN CASE 
THE STORM DEVIATES FROM ITS CURRENT NORTHEAST AT 45 MPH PATH.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT MONDAY EVENING
FOR SOUTHWESTERN MISSOURI.

&&

LAT...LON 3651 9265 3680 9244 3679 9212 3671 9211
      3650 9213 3649 9221
TIME...MOT...LOC 2208Z 232DEG 38KT 3659 9242
HAIL 1.00IN

$$

RUNNELS
490 
WWUS53 KSGF 252227
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
527 PM CDT MON APR 25 2011

MOC153-252230-
/O.CON.KSGF.TO.W.0024.000000T0000Z-110425T2230Z/
OZARK MO-
527 PM CDT MON APR 25 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR EASTERN
OZARK COUNTY...

AT 523 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO NEAR TECUMSEH...OR 24 MILES WEST OF WEST PLAINS...
MOVING NORTHEAST AT 55 MPH.

LOCATIONS IMPACTED INCLUDE BAKERSFIELD...SYCAMORE...TECUMSEH...UDALL
AND ZANONI.

ROTATION WITH THIS STORM IS WEAKENING...SO A SEVERE THUNDERSTORM 
WARNING WILL BE ISSUED FOR EASTERN OZARK COUNTY INTO HOWELL COUNTY.  
SHOULD THE ROTATION INCREASE...A NEW TORNADO WARNING MAY BE REQUIRED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT MONDAY EVENING
FOR SOUTHWESTERN MISSOURI.

&&

LAT...LON 3649 9227 3650 9232 3672 9237 3679 9212
      3671 9211 3650 9213
TIME...MOT...LOC 2225Z 239DEG 50KT 3664 9223
HAIL <.50IN

$$
RUNNELS

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 24, 7:09 PM CDTAreal Flood WarningSGFDade, Jasper, Lawrence, Polk12 hr
Apr 24, 9:23 PM CDTRiver Flood WarningSGFJasper66 hr
Apr 24, 10:26 PM CDTSpecial Weather StatementSGFJasper49 min
Apr 24, 10:51 PM CDTFlash Flood WarningSGFBarry, Christian, Greene, Lawrence, McDonald, Newton and 2 more8 hr
Apr 25, 1:12 AM CDTFlash Flood WarningSGFDent, Texas, Wright6 hr
Apr 25, 3:55 AM CDTSpecial Weather StatementSGFMcDonald50 min
Apr 25, 4:15 AM CDTSpecial Weather StatementSGFBarry60 min
Apr 25, 5:10 AM CDTSpecial Weather StatementSGFStone, Taney65 min
Apr 25, 6:23 AM CDTFlash Flood WarningSGFJasper, McDonald, Newton20 hr
Apr 25, 6:34 AM CDTFlash Flood WarningSGFBarry, Christian, Greene, Lawrence, Stone, Webster19 hr
Apr 25, 6:43 AM CDTFlash Flood WarningSGFDent, Douglas, Howell, Oregon, Ozark, Shannon and 3 more19 hr
Apr 25, 6:47 AM CDTRiver Flood WarningSGFJasper62 hr
Apr 25, 6:57 AM CDTAreal Flood WarningSGFDade, Dallas, Laclede, Phelps, Polk, Pulaski24 hr
Apr 25, 10:49 AM CDTRiver Flood WarningSGFOzark28 hr
Apr 25, 1:11 PM CDTRiver Flood WarningSGFJasper, Newton38 hr
Apr 25, 4:30 PM CDTSevere Thunderstorm WarningSGFOzark, Taney60 min
Apr 25, 5:31 PM CDTSevere Thunderstorm WarningSGFHowell, Ozark34 min

Nearby

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