Alert archive / Oklahoma / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 52

February 24, 200039 counties in Oklahoma

The Storm Prediction Center issued this severe thunderstorm watch at Feb 24, 2000, 11:00 PM CST for 39 counties in Oklahoma. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Feb 24, 2000, 11:00 PM CST (05:00 UTC)
Expired: Feb 25, 2000, 4:00 AM CST
In force: 5 hr
Issued by: the Storm Prediction Center

All 39 counties

Alfalfa County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Cotton County, OK, Creek County, OK, Custer County, OK, Dewey County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Hughes County, OK, Johnston County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, McClain County, OK, Murray County, OK, Noble County, OK, Okfuskee County, OK, Oklahoma County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Woods County, OK

The radar

The Norman radar (KTLX), 55 km from the middle of the area, began a volume at 04:59 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.

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Feb 24, 11:00 PM CST	Severe Thunderstorm Warning	OUN	Kiowa, Washita	45 min

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 5.0 hours before the alert went out and 67 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: 528 J/kg
Mixed-layer CIN: -197 J/kg
Mixed-layer LCL: 826 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 226 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

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

866 
WWUS9 KMKC 250418
SEL2  

SEL2  
MKC WW 250418
OKZ000-251000-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 52
STORM PREDICTION CENTER NORMAN OK
1018 PM CST THU FEB 24 2000

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

   CENTRAL AND WESTERN OKLAHOMA                           

EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 1100 PM UNTIL
400 AM CST.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 80 STATUTE MILES
EAST AND WEST OF A LINE FROM 40 MILES WEST NORTHWEST OF PONCA CITY
OKLAHOMA TO 35 MILES WEST SOUTHWEST OF ARDMORE OKLAHOMA.

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...THIS SEVERE THUNDERSTORM WATCH REPLACES
TORNADO WATCH NUMBER 49.  WATCH NUMBER 49 WILL NOT BE IN EFFECT
AFTER 1100 PM CST.  CONTINUE...WW 50...WW 51...

DISCUSSION...LINE OF SEVERE THUNDERSTORMS HAS MOVED INTO WRN OK. 
WITH 70KT LOW LEVEL JET AND SUFFICIENT MOISTURE/INSTABILITY...LINE
WILL CONTINUE E/NE ACROSS CENTRAL OK WITH PRIMARY THREAT DAMAGING
WINDS...PARTICULARLY IN BOWING SEGMENTS.


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTOR 24040.


...HALES

365,0961 340,0961 340,0985 365,0991

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 25, 12:00 AM CST	Tornado Watch	SPC	Cotton	5 hr

Nearby

Severe Thunderstorm Watches in Oklahoma, 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; radar from the NEXRAD Level II archive.