Alert archive / Missouri / Tornado Warnings in 2007

Tornado Warning 69, NWS Springfield, MO

October 17, 2007St. Clair County, Vernon County, Missouri

NWS Springfield, MO issued this tornado warning at Oct 17, 2007, 6:39 PM CDT for St. Clair County, Vernon County, Missouri. It was in force for 21 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: Oct 17, 2007, 6:39 PM CDT (23:39 UTC)
Expired: Oct 17, 2007, 7:00 PM CDT
In force: 21 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon

Counties St. Clair County, MO, Vernon County, MO

The radar

The Pleasant Hill radar (KEAX), 87 km from the middle of the area, began a volume at 23:41 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.

Issued	Product	Office	Lasted
Oct 17, 5:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.7 hours before the alert went out and 129 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: 389 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 632 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 195 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KSGF 172339
TORSGF
MOC185-217-180030-
/O.NEW.KSGF.TO.W.0069.071017T2339Z-071018T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
639 PM CDT WED OCT 17 2007

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN VERNON COUNTY IN WEST CENTRAL MISSOURI...
  NORTHWESTERN ST. CLAIR COUNTY IN WEST CENTRAL MISSOURI...

* UNTIL 730 PM CDT.

* AT 634 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS VERY
  DANGEROUS STORM WAS LOCATED 6 MILES EAST OF WALKER...OR 7 MILES
  NORTHWEST OF EL DORADO SPRINGS...MOVING NORTHEAST AT 35 MPH.

* THIS TORNADIC STORM WILL BE NEAR...
  SCHELL CITY BY 645 PM CDT.
  8 MILES SOUTHEAST OF APPLETON CITY BY 705 PM CDT.
  6 MILES NORTHWEST OF LOWRY CITY BY 720 PM CDT.

THE TOWNS OF TABERVILLE AND JOHNSON CITY ARE ALSO IN THE PATH OF THIS
TORNADIC STORM.

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 3806 9420 3807 9413 3805 9408 3817 9408
      3823 9404 3822 9364 3818 9353 3788 9401
      3789 9407 3783 9410 3794 9429
TIME...MOT...LOC 2339Z 224DEG 31KT 3796 9410

$$

ANGLE

1 follow-up statement

000 
WWUS53 KSGF 180000
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
700 PM CDT WED OCT 17 2007

MOC185-217-180010-
/O.CAN.KSGF.TO.W.0069.000000T0000Z-071018T0030Z/
VERNON MO-ST. CLAIR MO-
700 PM CDT WED OCT 17 2007

...THE TORNADO WARNING FOR NORTHEASTERN VERNON AND NORTHWESTERN ST.
CLAIR COUNTIES IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT THURSDAY MORNING
FOR SOUTHEAST KANSAS AND SOUTHERN MISSOURI.

LAT...LON 3806 9420 3807 9413 3805 9408 3817 9408
      3823 9404 3822 9364 3818 9353 3788 9401
      3789 9407 3783 9410 3794 9429
TIME...MOT...LOC 0000Z 236DEG 50KT 3818 9390

$$

ANGLE

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 17, 3:22 AM CDT	Dense Fog Advisory	SGF	Dent, Douglas, Howell, Oregon, Ozark, Shannon and 1 more	3 hr
Oct 17, 2:48 PM CDT	Severe Thunderstorm Warning	SGF	Vernon	37 min
Oct 17, 4:33 PM CDT	Tornado Warning	SGF	McDonald	42 min
Oct 17, 4:56 PM CDT	Severe Thunderstorm Warning	SGF	Vernon	34 min
Oct 17, 5:10 PM CDT	Tornado Warning	SGF	Barry, Newton	36 min
Oct 17, 5:24 PM CDT	Severe Thunderstorm Warning	SGF	Vernon	36 min
Oct 17, 5:34 PM CDT	Tornado Warning	SGF	Lawrence	41 min
Oct 17, 5:52 PM CDT	Severe Thunderstorm Warning	SGF	Barton	53 min
Oct 17, 6:02 PM CDT	Severe Thunderstorm Warning	SGF	Cedar, St. Clair, Vernon	58 min
Oct 17, 6:03 PM CDT	Tornado Warning	SGF	Christian, Greene	57 min
Oct 17, 6:08 PM CDT	Tornado Warning	SGF	Barton, Cedar, Vernon	43 min
Oct 17, 6:38 PM CDT	Tornado Warning	SGF	Polk	34 min

Nearby

Tornado Warnings in Missouri, 2007 Every tornado warning in 2007 Tornadoes in 2007

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.