Alert archive / Oklahoma / Tornado Warnings in 1986

Tornado Warning 12, NWS Tulsa, OK

September 30, 1986Cherokee County, Delaware County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Sep 30, 1986, 3:44 PM CDT for Cherokee County, Delaware County, Oklahoma. It was in force for 28 min.

The area

The counties it named.

The facts

Issued
Sep 30, 1986, 3:44 PM CDT (20:44 UTC)
Expired
Sep 30, 1986, 4:12 PM CDT
In force
28 min
Issued by
NWS Tulsa, OK
Area
Whole counties

Counties Cherokee County, OK, Delaware 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

Springfield, MO (KUMN), launched 12:00Z, 8.7 hours before the alert went out and 128 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, Springfield, MO at 12:00Z on 1986-09-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 1986-09-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -59 square meters per square second.19395878Sfc1 km3 km6 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
613 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
-59 m²/s²
0-3 km storm-relative helicity
285 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 KTUL 302044
TORTUL
OKC021-041-302145-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
344 PM CDT TUE SEP 30 1986
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL  445 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES:
 
IN EAST CENTRAL OKLAHOMA
          ..NORTHEASTERN CHEROKEE
IN NORTHEAST OKLAHOMA
          ..SOUTHEASTERN DELAWARE
-
AT 345 PM A TORNADO WAS REPORTED BY THE CIVIL DEFENSE NEAR GIDEON
OKLAHOMA...IN CHEROKEE COUNTY.
 
THE STORM WAS MOVING TO THE NORTHEAST AT 35 MPH.
 
KEEP TUNED TO THIS STATION FOR THE LATEST WEATHER BULLETINS.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 29, 10:23 PM CDTSevere Thunderstorm WarningTSAOsage67 min
Sep 30, 12:37 AM CDTSevere Thunderstorm WarningTSACreek, Okfuskee68 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.