Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 433, NWS Norman, OK

July 2, 1989Logan County, Payne County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 2, 1989, 9:14 AM CDT for Logan County, Payne County, Oklahoma. It was in force for 46 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, 9:14 AM CDT (14:14 UTC)
Expired
Jul 2, 1989, 10:00 AM CDT
In force
46 min
Issued by
NWS Norman, OK
Area
Whole counties

Counties Logan County, OK, Payne 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

TimeReportWhereRemark
Jul 2, 9:37 AM CDTHail 0.75Logan, OK
Jul 2, 9:40 AM CDTThunderstorm Wind 0Payne, OK
Jul 2, 9:50 AM CDTThunderstorm Wind 52Payne, 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, 2.2 hours before the alert went out and 88 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 12:00Z on 1989-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1285 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 12:00Z on 1989-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.193958Sfc1 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
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

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 7:37 AM CDTSevere Thunderstorm WarningOUNAlfalfa, Woods53 min
Jul 2, 7:58 AM CDTSevere Thunderstorm WarningOUNGrant47 min
Jul 2, 8:22 AM CDTSevere Thunderstorm WarningOUNMajor53 min
Jul 2, 8:34 AM CDTSevere Thunderstorm WarningOUNGarfield, Kay41 min
Jul 2, 8:48 AM CDTSevere Thunderstorm WarningOUNBlaine, Kingfisher42 min
Jul 2, 8:48 AM CDTSevere Thunderstorm WarningOUNNoble42 min
Jul 2, 9:29 AM CDTSevere Thunderstorm WarningOUNCanadian, Kingfisher46 min
Jul 2, 9:44 AM CDTSevere Thunderstorm WarningOUNLincoln, Oklahoma46 min
Jul 2, 10:22 AM CDTSevere Thunderstorm WarningOUNGrady53 min
Jul 2, 10:45 AM CDTSevere Thunderstorm WarningOUNCleveland, McClain45 min
Jul 2, 11:15 AM CDTSevere Thunderstorm WarningOUNGarvin45 min
Jul 2, 11:53 AM CDTSevere Thunderstorm WarningOUNCarter, Murray52 min
Jul 2, 5:55 PM CDTSevere Thunderstorm WarningOUNLove35 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1989Every 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.