Alert archive / Missouri / Tornado Warnings in 2011

Tornado Warning 9, NWS Springfield, MO

February 27, 2011Dent County, Phelps County, Missouri

NWS Springfield, MO issued this tornado warning at Feb 27, 2011, 11:31 PM CST for Dent County, Phelps County, Missouri. It was in force for 17 min. 1 report 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: Feb 27, 2011, 11:31 PM CST (05:31 UTC)
Expired: Feb 27, 2011, 11:48 PM CST
In force: 17 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon

Counties Dent County, MO, Phelps County, MO

The radar

The St Louis radar (KLSX), 129 km from the middle of the area, began a volume at 05:31 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
Feb 27, 11:40 PM CST	HAIL 1.75	Lake Spring, 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
Feb 27, 7:24 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 5.5 hours before the alert went out and 220 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: 626 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 1011 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 369 m²/s²
0-3 km storm-relative helicity: 472 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 7.4

Open this sounding in Storm Lab

The text

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

602 
WFUS53 KSGF 280531
TORSGF
MOC065-161-280600-
/O.NEW.KSGF.TO.W.0009.110228T0531Z-110228T0600Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1131 PM CST SUN FEB 27 2011

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL PHELPS COUNTY IN EAST CENTRAL MISSOURI...
  NORTHERN DENT COUNTY IN SOUTH CENTRAL MISSOURI...

* UNTIL MIDNIGHT CST.

* AT 1128 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 4 MILES SOUTHWEST OF LECOMA...OR 15 MILES SOUTH OF ROLLA...
  MOVING EAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE ANUTT...BANGERT...HOWES...LAKE SPRING...
  LECOMA AND SLIGO.

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 3767 9182 3781 9186 3792 9153 3779 9153
      3779 9134 3776 9131 3770 9132
TIME...MOT...LOC 0532Z 260DEG 51KT 3775 9173

$$

BOXELL

2 follow-up statements

162 
WWUS53 KSGF 280541
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1141 PM CST SUN FEB 27 2011

MOC065-161-280600-
/O.CON.KSGF.TO.W.0009.000000T0000Z-110228T0600Z/
PHELPS MO-DENT MO-
1141 PM CST SUN FEB 27 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST FOR NORTH
CENTRAL DENT AND EAST CENTRAL PHELPS COUNTIES...

AT 1138 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO 3 MILES SOUTHEAST OF LAKE SPRING...OR 9 MILES
NORTHWEST OF SALEM...MOVING EAST AT 60 MPH.

LOCATIONS IMPACTED INCLUDE BANGERT...LAKE SPRING AND SLIGO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CST MONDAY MORNING FOR
SOUTHEAST KANSAS AND SOUTHERN MISSOURI.

&&

LAT...LON 3776 9131 3769 9163 3786 9172 3792 9153
      3779 9153 3779 9134
TIME...MOT...LOC 0541Z 260DEG 51KT 3777 9157

$$

BOXELL

184 
WWUS53 KSGF 280548
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1148 PM CST SUN FEB 27 2011

MOC065-161-280556-
/O.CAN.KSGF.TO.W.0009.000000T0000Z-110228T0600Z/
PHELPS MO-DENT MO-
1148 PM CST SUN FEB 27 2011

...THE TORNADO WARNING FOR NORTH CENTRAL DENT AND EAST CENTRAL PHELPS
COUNTIES IS CANCELLED...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE TORNADO
THAT PROMPTED THE WARNING IS EXITING THE WARNED AREA...THUS THE
WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR ALL OF DENT COUNTY 
AND SOUTHERN PHELPS COUNTY THROUGH 1230 AM.  

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CST MONDAY MORNING FOR
SOUTHEAST KANSAS AND SOUTHERN MISSOURI.

LAT...LON 3776 9131 3769 9163 3786 9172 3792 9153
      3779 9153 3779 9134
TIME...MOT...LOC 0546Z 260DEG 51KT 3778 9148

$$

BOXELL

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 27, 8:39 PM CST	Tornado Warning	SGF	Barton, Jasper	51 min
Feb 27, 9:14 PM CST	Tornado Warning	SGF	Barton, Cedar, Dade	46 min
Feb 27, 9:19 PM CST	Tornado Warning	SGF	Miller, Morgan	26 min
Feb 27, 9:36 PM CST	Severe Thunderstorm Warning	SGF	Camden, Maries, Miller, Pulaski	39 min
Feb 27, 9:42 PM CST	Severe Thunderstorm Warning	SGF	Barton, Vernon	47 min
Feb 27, 9:44 PM CST	Tornado Warning	SGF	Polk	46 min
Feb 27, 9:54 PM CST	Severe Thunderstorm Warning	SGF	Cedar, Dade	51 min
Feb 27, 10:03 PM CST	Severe Thunderstorm Warning	SGF	Jasper, Newton	42 min
Feb 27, 10:07 PM CST	Tornado Warning	SGF	Dallas, Laclede, Polk	38 min
Feb 27, 10:15 PM CST	Severe Thunderstorm Warning	SGF	Hickory, Polk	45 min
Feb 27, 10:35 PM CST	Severe Thunderstorm Warning	SGF	Dade, Lawrence	38 min
Feb 27, 10:38 PM CST	Severe Thunderstorm Warning	SGF	Camden, Dallas, Hickory, Laclede	52 min
Feb 27, 10:39 PM CST	Tornado Warning	SGF	Camden, Laclede, Phelps, Pulaski, Texas	51 min
Feb 27, 10:59 PM CST	Severe Thunderstorm Warning	SGF	Greene	17 min
Feb 27, 11:15 PM CST	Severe Thunderstorm Warning	SGF	Camden, Laclede, Maries, Miller, Phelps, Pulaski and 3 more	45 min
Feb 27, 11:45 PM CST	Severe Thunderstorm Warning	SGF	Dent, Phelps, Shannon, Texas	45 min
Feb 28, 2:25 PM CST	River Flood Warning	SGF	Vernon	40 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.