Alert archive / Oklahoma / Tornado Warnings in 1986

Tornado Warning 36, NWS Norman, OK

September 29, 1986Logan County, Oklahoma

NWS Norman, OK issued this tornado warning at Sep 29, 1986, 3:09 PM CDT for Logan County, Oklahoma. It was in force for 36 min.

The area

The counties it named.

The facts

Issued
Sep 29, 1986, 3:09 PM CDT (20:09 UTC)
Expired
Sep 29, 1986, 3:45 PM CDT
In force
36 min
Issued by
NWS Norman, OK
Area
Whole counties

County Logan 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

Ok Cty/Will Rgrs, OK (KOKC), launched 12:00Z, 8.2 hours before the alert went out and 59 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, Ok Cty/Will Rgrs, OK at 12:00Z on 1986-09-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 306 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, Ok Cty/Will Rgrs, OK at 12:00Z on 1986-09-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 223 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
306 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
802 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
223 m²/s²
0-3 km storm-relative helicity
298 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAAOO KOKC 292009
TOROKC
OKC083-292045-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
309 PM CDT MON SEP 29 1986
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL  345 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES:
 
IN CENTRAL OKLAHOMA
          ..LOGAN

AT 309 PM A TORNADO WAS REPORTED NORTH OF WATERLOO IN SOUTHERN LOGAN
COUNTY. IT WAS REPORTED TO BE MOVING EAST.
 
TAKE SHELTER IMMEDIATELY.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 28, 8:04 PM CDTSevere Thunderstorm WarningOUNMcClain76 min
Sep 29, 4:01 PM CDTSevere Thunderstorm WarningOUNOklahoma59 min
Sep 29, 4:11 PM CDTTornado WarningOUNOklahoma34 min
Sep 29, 4:35 PM CDTTornado WarningOUNLincoln, Oklahoma40 min
Sep 29, 5:20 PM CDTSevere Thunderstorm WarningOUNEllis, Roger Mills60 min
Sep 29, 6:15 PM CDTSevere Thunderstorm WarningOUNEllis, Roger Mills65 min
Sep 29, 6:54 PM CDTSevere Thunderstorm WarningOUNDewey, Woodward51 min
Sep 29, 6:54 PM CDTSevere Thunderstorm WarningOUNCuster51 min

Nearby

Tornado Warnings in Oklahoma, 1986Every tornado warning in 1986Tornadoes in 1986

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.