Alert archive / Oklahoma / Tornado Warnings in 2000

Tornado Warning 44, NWS Norman, OK

October 22, 2000Oklahoma County, Oklahoma

NWS Norman, OK issued this tornado warning at Oct 22, 2000, 7:26 PM CDT for Oklahoma County, Oklahoma. It was in force for 34 min. 1 report came from 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, with what was reported inside it.

The facts

Issued: Oct 22, 2000, 7:26 PM CDT (00:26 UTC)
Expired: Oct 22, 2000, 8:00 PM CDT
In force: 34 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Oklahoma County, OK

The radar

The Norman radar (KTLX), 29 km from the middle of the area, began a volume at 00:29 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.

What was reported inside it

Time	Report	Where	Remark
Oct 22, 7:30 PM CDT	Hail 0.75	Midwest City, OK	Hail was reported at the interchange of Interstate 40 and Interstate 35.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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, 0.4 hours before the alert went out and 33 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 230029
TOROKC

OKC109-230100-

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

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

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

* UNTIL 800 PM CDT

* AT 726 PM CDT...DOPPLER RADAR CONTINUES TO INDICATE A SEVERE 
THUNDERSTORM WHICH HAS HAD A HISTORTY OF PRODUCING TORNADOES WILL 
CONTINUE TO MOVE NORTH NORTHEAST ACROSS CENTRAL SECTIONS OF OKLAHOMA 
COUNTY. ANOTHER AREA OF CONCERN IS STORMS MOVING ACROSS SOUTHWEST 
SECTIONS OF OKLAHOMA COUNTY NEAR WILL ROGERS WORLD AIRPORT. THESE 
STORMS MAY PRODUCE SMALL SHORT LIVED TORNADOES. THIS ACTIVITY WILL 
MOVE NORTHEAST AT 20 TO 25 MPH. 

* LOCATIONS IN THE WARNING INCLUDE ARCADIA...DEL CITY...NICHOLS   
HILLS...OKLAHOMA CITY...SPENCER AND THE VILLAGE

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

LAT...LON 3539 9766 3543 9738 3567 9728 3565 9758

30

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, 7:06 PM CDT	Tornado Warning	OUN	Grady	39 min
Oct 22, 7:18 PM CDT	Severe Thunderstorm Warning	OUN	Hughes	57 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.