Alert archive / Oklahoma / Tornado Warnings in 2001

Tornado Warning 8, NWS Norman, OK

April 14, 2001Greer County, Oklahoma

NWS Norman, OK issued this tornado warning at Apr 14, 2001, 3:49 PM CDT for Greer County, Oklahoma. It was in force for 26 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: Apr 14, 2001, 3:49 PM CDT (20:49 UTC)
Expired: Apr 14, 2001, 4:15 PM CDT
In force: 26 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Greer County, OK

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 14, 2:45 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 8.8 hours before the alert went out and 192 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: 116 J/kg
Mixed-layer CIN: -81 J/kg
Mixed-layer LCL: 587 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 128 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

726 
WFUS54 KOUN 142050
TOROKC
OKC055-142115-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
349 PM CDT SAT APR 14 2001

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  GREER COUNTY IN SOUTHWEST OKLAHOMA

* UNTIL 415 PM CDT

* AT 349 PM CDT...DOPPLER RADAR DETECTED A SEVERE THUNDERSTORM   
CAPABLE OF PRODUCING A TORNADO ABOUT 8 MILES SOUTH OF MANGUM
...MOVING EAST AT15 MPH.

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 3486 9950 3479 9950 3480 9933 3491 9933

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 4:24 AM CDT	Severe Thunderstorm Warning	OUN	Garvin	51 min
Apr 14, 3:38 PM CDT	Severe Thunderstorm Warning	OUN	Greer	52 min
Apr 14, 3:57 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa	48 min
Apr 14, 4:18 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	42 min
Apr 14, 4:44 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa	46 min
Apr 14, 4:58 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson, Stephens	47 min
Apr 14, 5:11 PM CDT	Severe Thunderstorm Warning	OUN	Carter	49 min
Apr 14, 5:12 PM CDT	Severe Thunderstorm Warning	OUN	Caddo	48 min
Apr 14, 5:51 PM CDT	Severe Thunderstorm Warning	OUN	Comanche	39 min
Apr 14, 5:59 PM CDT	Severe Thunderstorm Warning	OUN	Carter	31 min
Apr 14, 6:00 PM CDT	Severe Thunderstorm Warning	OUN	Caddo	30 min
Apr 14, 6:09 PM CDT	Severe Thunderstorm Warning	OUN	Johnston, Marshall	51 min
Apr 14, 6:20 PM CDT	Severe Thunderstorm Warning	OUN	Grady	40 min
Apr 14, 6:43 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan	47 min
Apr 14, 6:58 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, McClain	47 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.