Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 252, NWS Norman, OK

June 13, 1997Canadian County, Oklahoma County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 13, 1997, 5:55 AM CDT for Canadian County, Oklahoma County, Oklahoma. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 13, 1997, 5:55 AM CDT (10:55 UTC)
Expired
Jun 13, 1997, 6:45 AM CDT
In force
50 min
Issued by
NWS Norman, OK
Area
Whole counties

Counties Canadian County, OK, Oklahoma County, OK

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 10.9 hours before the alert went out and 45 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, Norman, OK at 00:00Z on 1997-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2646 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 1997-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.19395878Sfc1 km3 km6 km9 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
2646 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
1420 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
93 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOKC 131055 RRA
SVROKC
OKC017-109-131145-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
555 AM CDT FRI JUN 13 1997

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 645 AM CDT FOR PEOPLE IN
THE FOLLOWING COUNTIES

IN CENTRAL OKLAHOMA
     EASTERN CANADIAN AND OKLAHOMA

INCLUDING THE FOLLOWING LOCATIONS
     ARCADIA...BETHANY...CHOCTAW...DEL CITY...EDMOND...HARRAH...
     JONES...MIDWEST CITY...NICHOLS HILLS...OKLAHOMA CITY...
     PIEDMONT...SPENCER AND YUKON

AT 553 AM CDT DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER YUKON.

THE STORM WAS MOVING EAST NORTHEAST AT 25 MPH

THIS STORM LIKELY CONTAINS HAIL UP TO THE SIZE OF NICKELS AND
WIND GUSTS TO 60 MPH. VERY HEAVY RAIN AND FREQUENT LIGHTNING
ALSO ACCOMPANY THIS STORM.  SEEK SHELTER INDOORS...AWAY FROM
WINDOWS...AND AVOID USING ELECTRICAL APPLIANCES.


LAT...LON 3544  9714 3547  9791 356H9  9791 3567  9727

PURPURA

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 8:13 PM CDTSevere Thunderstorm WarningOUNEllis47 min
Jun 12, 9:20 PM CDTSevere Thunderstorm WarningOUNEllis, Harper55 min
Jun 12, 9:25 PM CDTSevere Thunderstorm WarningOUNBeckham, Roger Mills65 min
Jun 12, 9:50 PM CDTSevere Thunderstorm WarningOUNWoodward40 min
Jun 12, 10:05 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Woods40 min
Jun 12, 10:20 PM CDTSevere Thunderstorm WarningOUNCuster, Dewey40 min
Jun 12, 10:30 PM CDTSevere Thunderstorm WarningOUNRoger Mills45 min
Jun 12, 10:38 PM CDTSevere Thunderstorm WarningOUNMajor, Woodward52 min
Jun 12, 10:45 PM CDTSevere Thunderstorm WarningOUNAlfalfa45 min
Jun 12, 10:56 PM CDTSevere Thunderstorm WarningOUNBeckham, Custer, Washita64 min
Jun 12, 10:56 PM CDTSevere Thunderstorm WarningOUNWoods49 min
Jun 12, 11:42 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Garfield, Grant48 min
Jun 12, 11:42 PM CDTSevere Thunderstorm WarningOUNBlaine, Canadian, Kingfisher48 min
Jun 12, 11:42 PM CDTSevere Thunderstorm WarningOUNMajor48 min
Jun 12, 11:47 PM CDTSevere Thunderstorm WarningOUNCaddo, Kiowa, Washita43 min
Jun 13, 12:10 AM CDTSevere Thunderstorm WarningOUNCanadian, Cleveland, Grady, Kingfisher, Logan, McClain and 1 more65 min
Jun 13, 12:20 AM CDTSevere Thunderstorm WarningOUNKay, Noble40 min
Jun 13, 1:03 AM CDTSevere Thunderstorm WarningOUNNoble, Payne42 min
Jun 13, 1:42 AM CDTSevere Thunderstorm WarningOUNCuster48 min
Jun 13, 2:04 AM CDTSevere Thunderstorm WarningOUNStephens41 min
Jun 13, 2:08 AM CDTSevere Thunderstorm WarningOUNWashita37 min
Jun 13, 3:13 AM CDTSevere Thunderstorm WarningOUNCarter32 min
Jun 13, 3:27 AM CDTSevere Thunderstorm WarningOUNCleveland, McClain48 min
Jun 13, 3:38 AM CDTSevere Thunderstorm WarningOUNCarter, Love37 min
Jun 13, 3:41 AM CDTFlash Flood WarningOUNCleveland, McClain3 hr
Jun 13, 3:50 AM CDTSevere Thunderstorm WarningOUNMarshall25 min
Jun 13, 4:03 AM CDTSevere Thunderstorm WarningOUNWashita42 min
Jun 13, 4:14 AM CDTSevere Thunderstorm WarningOUNBryan, Marshall46 min
Jun 13, 4:48 AM CDTSevere Thunderstorm WarningOUNBryan42 min
Jun 13, 3:24 PM CDTSevere Thunderstorm WarningOUNBryan, Choctaw51 min
Jun 13, 3:56 PM CDTSevere Thunderstorm WarningOUNChoctaw49 min
Jun 13, 4:42 PM CDTSevere Thunderstorm WarningOUNChoctaw48 min
Jun 13, 6:48 PM CDTSevere Thunderstorm WarningOUNPushmataha42 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1997Every severe thunderstorm warning in 1997

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.