Alert archive / Oklahoma / Tornado Warnings in 2001

Tornado Warning 80, NWS Norman, OK

October 9, 2001Blaine County, Caddo County, Oklahoma

NWS Norman, OK issued this tornado warning at Oct 9, 2001, 5:55 PM CDT for Blaine County, Caddo County, Oklahoma. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Oct 9, 2001, 5:55 PM CDT (22:55 UTC)
Expired: Oct 9, 2001, 6:45 PM CDT
In force: 50 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Blaine County, OK, Caddo County, OK

The radar

The Norman radar (KTLX), 114 km from the middle of the area, began a volume at 22:54 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.

Issued	Product	Office	Lasted
Oct 9, 5:30 PM CDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 10.9 hours before the alert went out and 107 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: 212 J/kg
Mixed-layer CIN: -197 J/kg
Mixed-layer LCL: 603 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 228 m²/s²
0-3 km storm-relative helicity: 292 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.0

Open this sounding in Storm Lab

The text

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

738 
WFUS54 KOUN 092259
TOROKC
OKC011-015-092345-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
555 PM CDT TUE OCT 9 2001

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  BLAINE COUNTY
  NORTHERN CADDO COUNTY

* UNTIL 645 PM CDT

* AT 555 PM CDT...DOPPLER RADAR AND SPOTTERS DETECTED A TORNADO 
SOUTHWEST OF HYDRO NEAR INTERSTATE 40 MOVING EAST NORTHEAST AT 35 
MPH.

* LOCATIONS IN THE WARNING INCLUDE BRIDGEPORT...GEARY...HINTON AND   
HYDRO AND WEATHERFORD.

THIS THUNDERSTORM HAS A HISTORY OF PRODUCING TORNADOES IN WASHITA 
COUNTY AND PRODUCED SIGNIFICANT DAMAGE IN CORDELL. 

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.

LAT...LON 3563 9863 3538 9863 3539 9831 3573 9832

33/DLF

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 9, 1:50 PM CDT	Severe Thunderstorm Warning	OUN	Beckham	55 min
Oct 9, 2:37 PM CDT	Tornado Warning	OUN	Beckham	23 min
Oct 9, 2:58 PM CDT	Tornado Warning	OUN	Beckham	32 min
Oct 9, 3:21 PM CDT	Tornado Warning	OUN	Beckham, Roger Mills	24 min
Oct 9, 3:41 PM CDT	Tornado Warning	OUN	Custer	34 min
Oct 9, 3:44 PM CDT	Severe Thunderstorm Warning	OUN	Roger Mills	46 min
Oct 9, 3:58 PM CDT	Tornado Warning	OUN	Beckham	32 min
Oct 9, 4:06 PM CDT	Tornado Warning	OUN	Roger Mills	39 min
Oct 9, 4:16 PM CDT	Severe Thunderstorm Warning	OUN	Custer	44 min
Oct 9, 4:38 PM CDT	Tornado Warning	OUN	Custer, Washita	52 min
Oct 9, 4:44 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa	46 min
Oct 9, 4:49 PM CDT	Tornado Warning	OUN	Kiowa	41 min
Oct 9, 5:24 PM CDT	Tornado Warning	OUN	Custer	51 min
Oct 9, 5:25 PM CDT	Tornado Warning	OUN	Kiowa, Washita	50 min
Oct 9, 6:13 PM CDT	Tornado Warning	OUN	Washita	32 min
Oct 9, 6:43 PM CDT	Tornado Warning	OUN	Caddo	32 min

Nearby

Tornado Warnings in Oklahoma, 2001 Every tornado warning in 2001 Tornadoes in 2001

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.