Alert archive / Oklahoma / Tornado Watches in 1998

Tornado Watch 528

June 8, 199835 counties in Oklahoma; Hardeman County, Wilbarger County, Texas

The Storm Prediction Center issued this tornado watch at Jun 8, 1998, 2:45 PM CDT for 35 counties in Oklahoma; Hardeman County, Wilbarger County, Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 8, 1998, 2:45 PM CDT (19:45 UTC)
Expired
Jun 8, 1998, 9:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 37 counties

Alfalfa County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Jackson County, OK, Jefferson 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, Oklahoma County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Hardeman County, TX, Wilbarger County, TX

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 8, 3:13 PM CDTSevere Thunderstorm WarningOUNBlaine, Caddo, Custer, Washita47 min
Jun 8, 3:25 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Major, Woods35 min
Jun 8, 3:33 PM CDTSevere Thunderstorm WarningOUNCanadian42 min
Jun 8, 3:58 PM CDTTornado WarningOUNCanadian32 min
Jun 8, 4:03 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Garfield, Grant42 min
Jun 8, 4:25 PM CDTTornado WarningOUNCanadian, Oklahoma35 min
Jun 8, 4:45 PM CDTSevere Thunderstorm WarningOUNGarfield, Grant, Kay45 min
Jun 8, 4:50 PM CDTSevere Thunderstorm WarningOUNCaddo30 min
Jun 8, 4:55 PM CDTTornado WarningOUNOklahoma35 min
Jun 8, 5:16 PM CDTSevere Thunderstorm WarningOUNLincoln44 min
Jun 8, 5:19 PM CDTSevere Thunderstorm WarningOUNGrady56 min
Jun 8, 5:27 PM CDTTornado WarningOUNKay33 min
Jun 8, 5:46 PM CDTSevere Thunderstorm WarningOUNCleveland, McClain44 min
Jun 8, 6:10 PM CDTSevere Thunderstorm WarningOUNLogan, Oklahoma50 min
Jun 8, 6:21 PM CDTTornado WarningOUNCleveland24 min
Jun 8, 6:37 PM CDTSevere Thunderstorm WarningOUNPottawatomie68 min
Jun 8, 7:13 PM CDTTornado WarningOUNPottawatomie, Seminole32 min
Jun 8, 7:46 PM CDTSevere Thunderstorm WarningOUNCanadian44 min
Jun 8, 8:27 PM CDTSevere Thunderstorm WarningOUNCanadian48 min
Jun 8, 8:51 PM CDTSevere Thunderstorm WarningOUNOklahoma39 min

The nearest sounding before it

Fort Sill, OK (KFSI), launched 12:00Z, 7.8 hours before the alert went out and 66 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-pSkew-T log-p diagram, Fort Sill, OK at 12:00Z on 1998-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 383 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Sill, OK at 12:00Z on 1998-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 353 square meters per square second.19395878Sfc1 km3 km6 kmRMLM
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
383 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
542 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
353 m²/s²
0-3 km storm-relative helicity
696 m²/s²
Significant tornado parameter
1.2
Supercell composite
7.3

Open this sounding in Storm Lab

The text

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

303 
WWUS9 KMKC 081913
SEL8  
MKC WW 081913
OKZ000-090200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 528
STORM PREDICTION CENTER NORMAN OK
213 PM CDT MON JUN 8 1998

THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

   OKLAHOMA                           

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 245 PM UNTIL 900
PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 80 STATUTE MILES EAST AND WEST
OF A LINE FROM 40 MILES SOUTH OF FORT SILL OKLAHOMA TO 45 MILES
NORTH OF ENID OKLAHOMA.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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 527...

DISCUSSION...THUNDERSTORM ACTIVITY IS INTENSIFING ALONG DRY LINE
IN EXTREME WESTERN OK.  THIS ACTIVITY IS EXPECTED TO INTENSIFY AND
BECOME SEVERE WITH RISK OF SUPERCELLS AND ISOLATED TORNADOES.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 65 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 580. 
MEAN STORM MOTION VECTOR 24025.


...JOHNS

340,0994 370,0992 370,0962 340,0970

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 7, 9:00 PM CDTTornado WatchSPCBeaver, Texas5 hr
Jun 8, 6:15 PM CDTTornado WatchSPCCherokee, Craig, Creek, Delaware, McIntosh, Mayes and 10 more6 hr

Nearby

Tornado Watches in Oklahoma, 1998Tornado Watches in Texas, 1998Every tornado watch in 1998

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.