Alert archive / Missouri / Tornado Warnings in 2007

Tornado Warning 71, NWS Springfield, MO

November 21, 2007Oregon County, Missouri

NWS Springfield, MO issued this tornado warning at Nov 21, 2007, 1:57 PM CST for Oregon County, Missouri. It was in force for 48 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: Nov 21, 2007, 1:57 PM CST (19:57 UTC)
Expired: Nov 21, 2007, 2:45 PM CST
In force: 48 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon

County Oregon County, MO

The radar

The Springfield radar (KSGF), 197 km from the middle of the area, began a volume at 19:57 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
Nov 21, 12:47 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 8.0 hours before the alert went out and 226 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: 845 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 506 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 118 m²/s²
0-3 km storm-relative helicity: 113 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.0

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KSGF 211956
TORSGF
MOC149-212045-
/O.NEW.KSGF.TO.W.0071.071121T1957Z-071121T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
157 PM CST WED NOV 21 2007

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* TORNADO WARNING FOR...
  OREGON COUNTY IN SOUTH CENTRAL MISSOURI...

* UNTIL 245 PM CST.

* AT 153 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS VERY
  DANGEROUS STORM WAS LOCATED 10 MILES EAST OF ALTON...OR 21 MILES
  NORTHEAST OF THAYER...MOVING EAST AT 50 MPH.

* THIS TORNADIC STORM WILL REMAIN OVER MAINLY RURAL AREAS OF OREGON
  COUNTY.

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS IN EFFECT FOR THE SAME AREA. GO TO A BASEMENT OR SMALL INTERIOR
ROOM ON THE LOWEST FLOOR.

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 3655 9114 3655 9167 3682 9149 3688 9130
      3688 9123 3683 9122 3683 9112 3682 9111
TIME...MOT...LOC 1957Z 280DEG 45KT 3667 9116

$$

WISE

3 follow-up statements

000 
WWUS53 KSGF 212007
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
207 PM CST WED NOV 21 2007

MOC149-212045-
/O.CON.KSGF.TO.W.0071.000000T0000Z-071121T2045Z/
OREGON MO-
207 PM CST WED NOV 21 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM CST FOR OREGON
COUNTY...

AT 202 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
COUCH...OR 11 MILES NORTHEAST OF THAYER...MOVING EAST AT 30 MPH.

THE TORNADO WILL REMAIN OVER MAINLY RURAL AREAS OF OREGON COUNTY.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST WEDNESDAY EVENING
FOR SOUTH CENTRAL MISSOURI.

LAT...LON 3658 9114 3657 9114 3655 9114 3655 9160
      3683 9122 3683 9112 3682 9111
TIME...MOT...LOC 2007Z 282DEG 26KT 3659 9133

$$

WISE

000 
WWUS53 KSGF 212026
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
226 PM CST WED NOV 21 2007

MOC149-212045-
/O.CON.KSGF.TO.W.0071.000000T0000Z-071121T2045Z/
OREGON MO-
226 PM CST WED NOV 21 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM CST FOR EAST
CENTRAL OREGON COUNTY...

AT 222 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES
EAST OF COUCH...OR 14 MILES EAST OF THAYER...MOVING EAST AT 20 MPH.

THE TORNADO WILL REMAIN OVER MAINLY RURAL AREAS OF EAST CENTRAL
OREGON COUNTY.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST WEDNESDAY EVENING
FOR SOUTH CENTRAL MISSOURI.

LAT...LON 3662 9113 3661 9114 3655 9114 3655 9151
      3675 9112
TIME...MOT...LOC 2026Z 285DEG 20KT 3657 9126

$$

WISE

000 
WWUS53 KSGF 212045
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
245 PM CST WED NOV 21 2007

MOC149-212055-
/O.EXP.KSGF.TO.W.0071.000000T0000Z-071121T2045Z/
OREGON MO-
245 PM CST WED NOV 21 2007

...THE TORNADO WARNING FOR EAST CENTRAL OREGON COUNTY EXPIRES AT 245
PM CST...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE TORNADO
THAT PROMPTED THE WARNING IS EXITING THE WARNED AREA...THUS THE
WARNING IS BEING ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST WEDNESDAY EVENING
FOR SOUTH CENTRAL MISSOURI.

LAT...LON 3662 9113 3661 9114 3655 9114 3655 9151
      3675 9112
TIME...MOT...LOC 2026Z 285DEG 20KT 3657 9126

$$

WISE

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 21, 1:03 PM CST	Severe Thunderstorm Warning	SGF	Shannon	30 min
Nov 21, 1:35 PM CST	Severe Thunderstorm Warning	SGF	Oregon	55 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.