Alert archive / Oklahoma / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 45

February 22, 200020 counties in Oklahoma; 15 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Feb 22, 2000, 2:30 PM CST for 20 counties in Oklahoma; 15 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Feb 22, 2000, 2:30 PM CST (20:30 UTC)
Expired: Feb 22, 2000, 8:00 PM CST
In force: 6 hr
Issued by: the Storm Prediction Center

All 35 counties

Beaver County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Kiowa County, OK, Major County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Archer County, TX, Baylor County, TX, Childress County, TX, Clay County, TX, Collingsworth County, TX, Cottle County, TX, Foard County, TX, Hardeman County, TX, Hemphill County, TX, King County, TX, Knox County, TX, Lipscomb County, TX, Wheeler County, TX, Wichita County, TX, Wilbarger County, TX

Warnings issued inside it

16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Feb 22, 2:55 PM CST	Severe Thunderstorm Warning	OUN	Foard, Hardeman	35 min
Feb 22, 3:12 PM CST	Severe Thunderstorm Warning	OUN	Knox	48 min
Feb 22, 3:25 PM CST	Severe Thunderstorm Warning	OUN	Foard, Hardeman, Wilbarger	50 min
Feb 22, 3:48 PM CST	Tornado Warning	OUN	Wilbarger	27 min
Feb 22, 4:05 PM CST	Tornado Warning	OUN	Jackson, Tillman	25 min
Feb 22, 4:13 PM CST	Severe Thunderstorm Warning	OUN	Wilbarger	47 min
Feb 22, 4:27 PM CST	Tornado Warning	OUN	Jackson, Kiowa	48 min
Feb 22, 4:30 PM CST	Severe Thunderstorm Warning	OUN	Tillman	30 min
Feb 22, 4:39 PM CST	Severe Thunderstorm Warning	AMA	Lipscomb	51 min
Feb 22, 4:53 PM CST	Severe Thunderstorm Warning	OUN	Comanche	42 min
Feb 22, 4:54 PM CST	Severe Thunderstorm Warning	AMA	Beaver	36 min
Feb 22, 5:02 PM CST	Severe Thunderstorm Warning	OUN	Tillman	43 min
Feb 22, 5:08 PM CST	Tornado Warning	OUN	Archer, Wichita	37 min
Feb 22, 5:14 PM CST	Severe Thunderstorm Warning	OUN	Kiowa	36 min
Feb 22, 5:26 PM CST	Severe Thunderstorm Warning	OUN	Caddo, Comanche	49 min
Feb 22, 5:42 PM CST	Severe Thunderstorm Warning	OUN	Cotton	38 min

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 8.5 hours before the alert went out and 175 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: 39 J/kg
Mixed-layer CIN: -444 J/kg
Mixed-layer LCL: 626 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 186 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

824 
WWUS9 KMKC 222006
SEL5  

SEL5  
MKC WW 222006
KSZ000-OKZ000-TXZ000-230200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 45
STORM PREDICTION CENTER NORMAN OK
206 PM CST TUE FEB 22 2000

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   WESTERN OKLAHOMA                           
   NORTHWEST TEXAS                              

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 230 PM UNTIL 800
PM CST.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 65 STATUTE MILES
EAST AND WEST OF A LINE FROM 50 MILES NORTH OF GAGE OKLAHOMA TO 50
MILES SOUTHWEST OF WICHITA FALLS TEXAS.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...  CONTINUE...WW 44...

DISCUSSION...THUNDERSTORMS WILL INCREASE ALONG STALLING DRY LINE/ 
PACIFIC FRONT CONVERGENCE ZONE THIS AFTERNOON.  UNIDIRECTIONAL 
WIND PROFILES...MODEST SHEAR AND LINEAR LOW-LEVEL FORCING SUGGEST 
STAGGERED LINES/CLUSTERS OF STORMS WITH POSSIBLE LARGE
HAIL/DAMAGING WINDS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.  MEAN STORM
MOTION VECTOR 18035.

...CORFIDI

370,0983 332,0975 332,1001 370,1005

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 22, 1:15 PM CST	Tornado Watch	SPC	Borden, Brown, Callahan, Coke, Coleman, Concho and 34 more	6 hr

Nearby

Severe Thunderstorm Watches in Oklahoma, 2000 Severe Thunderstorm Watches in Texas, 2000 Every severe thunderstorm watch 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.