Alert archive / Oklahoma / Tornado Warnings in 2008

Tornado Warning 2, NWS Norman, OK

January 7, 2008Seminole County, Oklahoma

NWS Norman, OK issued this tornado warning at Jan 7, 2008, 9:37 PM CST for Seminole County, Oklahoma. It was in force for 23 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: Jan 7, 2008, 9:37 PM CST (03:37 UTC)
Expired: Jan 7, 2008, 10:00 PM CST
In force: 23 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

County Seminole County, OK

The radar

The Norman radar (KTLX), 69 km from the middle of the area, began a volume at 03:37 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
Jan 7, 8:55 PM CST	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 3.6 hours before the alert went out and 74 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: 122 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 1742 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 174 m²/s²
0-3 km storm-relative helicity: 172 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KOUN 080338
TOROUN
OKC133-080400-
/O.NEW.KOUN.TO.W.0002.080108T0337Z-080108T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
937 PM CST MON JAN 7 2008

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN SEMINOLE COUNTY IN EAST CENTRAL OKLAHOMA...

* UNTIL 1000 PM CST

* AT 937 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES
  SOUTHWEST OF KONAWA...MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IN THE WARNING INCLUDE KONAWA AND WEWOKA.

PEOPLE IN AND NEAR KONAWA SHOULD TAKE SHELTER NOW

TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.

TORNADOES ARE ESPECIALLY DANGEROUS AT NIGHT BECAUSE THEY ARE HARD TO
SEE. TAKE COVER NOW. IF A BASEMENT IS NOT AVAILABLE...MOVE TO AN
INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR. LEAVE MOBILE HOMES AND
VEHICLES FOR REINFORCED SHELTER. STAY AWAY FROM WINDOWS.

LAT...LON 3525 9648 3499 9649 3491 9664 3493 9666
      3493 9670 3488 9669 3487 9672 3491 9677
      3497 9677
TIME...MOT...LOC 0337Z 224DEG 41KT 3492 9676

$$

..SPEG.

1 follow-up statement

000 
WWUS54 KOUN 080349
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
949 PM CST MON JAN 7 2008

OKC133-080400-
/O.CON.KOUN.TO.W.0002.000000T0000Z-080108T0400Z/
SEMINOLE OK-
949 PM CST MON JAN 7 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM CST FOR SOUTHERN
SEMINOLE COUNTY...

AT 949 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A 
SEVERE THUNDERSTORM WITH VERY STRONG CIRCULATION AND A POSSIBLE 
TORNADO ABOUT 5 MILES EAST OF KONAWA...MOVING NORTHEAST AT 45 MPH. 
THIS TORNADIC STORM WILL PASS VERY NEAR THE COMMUNITY OF VAMOOSA.

PEOPLE IN SOUTHERN SEMINOLE COUNTY SOUTH AND SOUTHEAST OF WOLF... 
AND NEAR AND SOUTHWEST OF WEWOKA SHOULD TAKE SHELTER NOW.

* LOCATIONS IN THE WARNING INCLUDE WEWOKA.

LAT...LON 3525 9648 3499 9649 3491 9664 3493 9666
      3493 9670 3488 9669 3487 9672 3491 9677
      3497 9677
TIME...MOT...LOC 0346Z 224DEG 41KT 3498 9667

$$

..SPEG.

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 7, 8:29 PM CST	Severe Thunderstorm Warning	OUN	Pontotoc, Seminole	46 min
Jan 7, 8:34 PM CST	Severe Thunderstorm Warning	OUN	Canadian	26 min
Jan 7, 8:36 PM CST	Severe Thunderstorm Warning	OUN	Hughes	39 min
Jan 7, 9:08 PM CST	Severe Thunderstorm Warning	OUN	Pontotoc, Pottawatomie, Seminole	52 min
Jan 7, 9:21 PM CST	Tornado Warning	OUN	Garvin, Pontotoc	24 min
Jan 7, 9:34 PM CST	Severe Thunderstorm Warning	OUN	Custer, Washita	41 min
Jan 7, 9:59 PM CST	Severe Thunderstorm Warning	OUN	Hughes, Seminole	46 min
Jan 7, 11:05 PM CST	Severe Thunderstorm Warning	OUN	Caddo	25 min
Jan 7, 11:31 PM CST	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Payne	44 min
Jan 7, 11:45 PM CST	Severe Thunderstorm Warning	OUN	Canadian, Oklahoma	45 min
Jan 7, 11:58 PM CST	Severe Thunderstorm Warning	OUN	Cleveland, Grady, McClain	32 min
Jan 8, 12:29 AM CST	Severe Thunderstorm Warning	OUN	Cleveland, Lincoln, Oklahoma	46 min

Nearby

Tornado Warnings in Oklahoma, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.