Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 73, NWS Norman, OK

April 26, 1989Harper County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Apr 26, 1989, 7:08 PM CDT for Harper County, Oklahoma. It was in force for 52 min. 1 report 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
Apr 26, 1989, 7:08 PM CDT (00:08 UTC)
Expired
Apr 26, 1989, 8:00 PM CDT
In force
52 min
Issued by
NWS Norman, OK
Area
Whole counties

County Harper 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
Apr 26, 7:15 PM CDTThunderstorm Wind 52Harper, 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

Dodge City, (KDDC), launched 00:00Z, 0.1 hours before the alert went out and 111 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, Dodge City, at 00:00Z on 1989-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 29 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, Dodge City, at 00:00Z on 1989-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
29 J/kg
Mixed-layer CIN
-77 J/kg
Mixed-layer LCL
3626 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Apr 26, 7:17 PM CDTSevere Thunderstorm WarningOUNEllis43 min
Apr 26, 7:22 PM CDTSevere Thunderstorm WarningOUNWoodward53 min
Apr 26, 7:30 PM CDTSevere Thunderstorm WarningOUNRoger Mills45 min
Apr 26, 7:36 PM CDTSevere Thunderstorm WarningOUNGreer54 min
Apr 26, 7:40 PM CDTSevere Thunderstorm WarningOUNWoods50 min
Apr 26, 7:56 PM CDTSevere Thunderstorm WarningOUNEllis34 min
Apr 26, 7:58 PM CDTSevere Thunderstorm WarningOUNHarper32 min
Apr 26, 8:10 PM CDTSevere Thunderstorm WarningOUNDewey, Woodward50 min
Apr 26, 8:19 PM CDTSevere Thunderstorm WarningOUNRoger Mills26 min
Apr 26, 8:26 PM CDTSevere Thunderstorm WarningOUNJackson49 min
Apr 26, 8:31 PM CDTSevere Thunderstorm WarningOUNTillman44 min
Apr 26, 8:55 PM CDTSevere Thunderstorm WarningOUNDewey, Woodward50 min
Apr 26, 8:58 PM CDTSevere Thunderstorm WarningOUNWoods47 min
Apr 26, 9:01 PM CDTSevere Thunderstorm WarningOUNRoger Mills44 min
Apr 26, 9:15 PM CDTSevere Thunderstorm WarningOUNEllis45 min
Apr 26, 9:43 PM CDTSevere Thunderstorm WarningOUNRoger Mills47 min
Apr 26, 9:55 PM CDTSevere Thunderstorm WarningOUNEllis50 min
Apr 26, 10:40 PM CDTSevere Thunderstorm WarningOUNWoods50 min
Apr 26, 11:13 PM CDTSevere Thunderstorm WarningOUNWoods47 min
Apr 26, 11:28 PM CDTSevere Thunderstorm WarningOUNMajor47 min
Apr 26, 11:42 PM CDTSevere Thunderstorm WarningOUNAlfalfa63 min
Apr 27, 12:02 AM CDTSevere Thunderstorm WarningOUNWoods43 min
Apr 27, 12:19 AM CDTSevere Thunderstorm WarningOUNGrant56 min
Apr 27, 12:42 AM CDTSevere Thunderstorm WarningOUNAlfalfa, Garfield48 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.