Alert archive / Oklahoma / Tornado Warnings in 2000

Tornado Warning 43, NWS Norman, OK

October 22, 2000Grady County, Oklahoma

NWS Norman, OK issued this tornado warning at Oct 22, 2000, 7:06 PM CDT for Grady County, Oklahoma. It was in force for 39 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 22, 2000, 7:06 PM CDT (00:06 UTC)
Expired: Oct 22, 2000, 7:45 PM CDT
In force: 39 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Grady County, OK

The radar

The Norman radar (KTLX), 77 km from the middle of the area, began a volume at 00:08 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 22, 6:30 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 0.1 hours before the alert went out and 61 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: 1389 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 493 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 158 m²/s²
0-3 km storm-relative helicity: 209 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 6.8

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KOUN 230005
TOROKC

OKC051-230045-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
706 PM CDT SUN OCT 22 2000

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  GRADY COUNTY IN CENTRAL OKLAHOMA

* UNTIL 745 PM CDT

* AT 706 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THE MOST DANGEROUS PORTION OF THE
  STORM WAS LOCATED OVER RUSH SPRINGS...MOVING NORTHEAST AT 20 MPH.

* LOCATIONS IN THE WARNING INCLUDE ALEX...MIDDLEBERG...NINNEKAH...
  RUSH SPRINGS AND TABLER

TAKE COVER NOW. ABANDON MOBILE HOMES AND VEHICLES. MOVE TO AN
INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS.

LAT...LON 3481 9809 3468 9796 3494 9768 3514 9776

CJS

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 22, 7:03 PM CDT	Tornado Warning	OUN	Oklahoma	27 min
Oct 22, 7:18 PM CDT	Severe Thunderstorm Warning	OUN	Hughes	57 min
Oct 22, 7:26 PM CDT	Tornado Warning	OUN	Oklahoma	34 min
Oct 22, 7:41 PM CDT	Tornado Warning	OUN	Hughes, Seminole	49 min
Oct 22, 8:00 PM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	45 min
Oct 22, 8:24 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan	51 min
Oct 22, 8:45 PM CDT	Flash Flood Warning	OUN	Cleveland, McClain, Oklahoma	3 hr
Oct 22, 9:14 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln	46 min
Oct 22, 9:20 PM CDT	Flash Flood Warning	OUN	Tillman	3 hr
Oct 22, 10:15 PM CDT	Flash Flood Warning	OUN	Caddo	3 hr
Oct 22, 11:45 PM CDT	Flash Flood Warning	OUN	Cleveland, Grady, McClain, Oklahoma	3 hr
Oct 23, 1:05 AM CDT	Flash Flood Warning	OUN	Caddo	3 hr
Oct 23, 1:32 AM CDT	Flash Flood Warning	OUN	Lincoln	3 hr
Oct 23, 2:44 AM CDT	Flash Flood Warning	OUN	Cleveland, Grady, McClain, Oklahoma	2 hr
Oct 23, 3:57 AM CDT	Flash Flood Warning	OUN	Caddo	3 hr
Oct 23, 5:40 AM CDT	Severe Thunderstorm Warning	OUN	Canadian	50 min

Nearby

Tornado Warnings in Oklahoma, 2000 Every tornado warning in 2000 Tornadoes in 2000

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.