Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 430, NWS Norman, OK

July 2, 1989Garfield County, Kay County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 2, 1989, 8:34 AM CDT for Garfield County, Kay County, Oklahoma. It was in force for 41 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 2, 1989, 8:34 AM CDT (13:34 UTC)
Expired: Jul 2, 1989, 9:15 AM CDT
In force: 41 min
Issued by: NWS Norman, OK
Area: Whole counties

Counties Garfield County, OK, Kay County, OK

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where
Jul 2, 9:00 AM CDT	Thunderstorm Wind 0	Garfield, OK
Jul 2, 9:03 AM CDT	Thunderstorm Wind 52	Kay, OK
Jul 2, 9:05 AM CDT	Thunderstorm Wind 0	Kay, OK

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 1.6 hours before the alert went out and 153 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: 1285 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 998 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 198 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOKC 021333
SVROKC
OKC071-047-021415-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
834 AM CDT SUN JUL 2 1989
 
THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  915 AM CDT
FOR THE FOLLOWING OKLAHOMA LOCATIONS...
 
IN NORTHEAST OKLAHOMA
 
   ...KAY COUNTY
 
IN NORTHWEST OKLAHOMA
 
   ...GARFIELD COUNTY
 
AT 834 AM A LINE OF SEVERE THUNDERSTORMS WAS LOCATED FROM 5 MILES WEST
OF BRAMAN TO LAMONT TO NEAR HILLSDALE. THE LINE WAS MOVING SOUTHEAST
AT 45 MPH. WINDS IN EXCESS OF 60 MPH HAVE BEEN REPORTED WITH THIS
LINE.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE AD
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 7:37 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	53 min
Jul 2, 7:58 AM CDT	Severe Thunderstorm Warning	OUN	Grant	47 min
Jul 2, 8:22 AM CDT	Severe Thunderstorm Warning	OUN	Major	53 min
Jul 2, 8:48 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher	42 min
Jul 2, 8:48 AM CDT	Severe Thunderstorm Warning	OUN	Noble	42 min
Jul 2, 9:14 AM CDT	Severe Thunderstorm Warning	OUN	Logan, Payne	46 min
Jul 2, 9:29 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher	46 min
Jul 2, 9:44 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Oklahoma	46 min
Jul 2, 10:22 AM CDT	Severe Thunderstorm Warning	OUN	Grady	53 min
Jul 2, 10:45 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain	45 min
Jul 2, 11:15 AM CDT	Severe Thunderstorm Warning	OUN	Garvin	45 min
Jul 2, 11:53 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Murray	52 min
Jul 2, 5:55 PM CDT	Severe Thunderstorm Warning	OUN	Love	35 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1989 Every severe thunderstorm warning in 1989

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.