Alert archive / Oklahoma / Tornado Warnings in 1989

Tornado Warning 12, NWS Norman, OK

October 29, 1989Tillman County, Oklahoma

NWS Norman, OK issued this tornado warning at Oct 29, 1989, 5:36 PM CST for Tillman County, Oklahoma. It was in force for 39 min.

The area

The counties it named.

The facts

Issued
Oct 29, 1989, 5:36 PM CST (23:36 UTC)
Expired
Oct 29, 1989, 6:15 PM CST
In force
39 min
Issued by
NWS Norman, OK
Area
Whole counties

County Tillman County, OK

The radar

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

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.6 hours before the alert went out and 168 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 1989-10-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 308 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 1989-10-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 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
308 J/kg
Mixed-layer CIN
-131 J/kg
Mixed-layer LCL
720 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
119 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
Oct 29, 3:02 PM CSTSevere Thunderstorm WarningOUNJackson28 min
Oct 29, 4:15 PM CSTSevere Thunderstorm WarningOUNKiowa30 min
Oct 29, 4:31 PM CSTSevere Thunderstorm WarningOUNJackson44 min
Oct 29, 4:42 PM CSTTornado WarningOUNKiowa33 min
Oct 29, 5:01 PM CSTSevere Thunderstorm WarningOUNTillman59 min
Oct 29, 5:22 PM CSTSevere Thunderstorm WarningOUNJackson, Kiowa53 min
Oct 29, 5:22 PM CSTSevere Thunderstorm WarningOUNComanche53 min
Oct 29, 5:29 PM CSTSevere Thunderstorm WarningOUNWashita46 min
Oct 29, 5:45 PM CSTTornado WarningOUNWashita30 min

Nearby

Tornado Warnings in Oklahoma, 1989Every tornado warning in 1989Tornadoes 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; the sounding from the Mesonet's radiosonde archive.