Alert archive / Oklahoma / Tornado Warnings in 1986

Tornado Warning 6, NWS Tulsa, OK

May 17, 1986Okfuskee County, Oklahoma

NWS Tulsa, OK issued this tornado warning at May 17, 1986, 12:09 AM CDT for Okfuskee County, Oklahoma. It was in force for 31 min.

The area

The counties it named.

The facts

Issued
May 17, 1986, 12:09 AM CDT (05:09 UTC)
Expired
May 17, 1986, 12:40 AM CDT
In force
31 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Okfuskee 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 00:00Z, 5.2 hours before the alert went out and 116 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 00:00Z on 1986-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2930 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 1986-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 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
2930 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
856 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
1.0
Supercell composite
5.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOKC 170511
TOROKC
OKC081-107-170540-

BULLETIN - EBS ACTIVATION REQUSTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
1209 AM CDT SAT MAY 17 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 1240 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES:

IN EASTERN OKLAHOMA
          ..SOUTHEASTERN LINCOLN..WESTERN OKFUSKEE.

AT 1209 PM A FUNNEL CLOUD WAS REPORTED 3 MILES SOUTHWEST OF PRAGUE.
RADAR INDICATES A SEVERE THUNDERSTORM IN THIS AREA MOVING NORTHEAST
AT 15 MPH.

PERSONS IN THE PADEN AND BOLEY AREAS SHOULD TAKE IMMEDIATE TORNADO
PRECAUTIONS.

The office that day

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

IssuedProductOfficeCountiesLasted
May 16, 11:34 PM CDTSevere Thunderstorm WarningTSACreek56 min
May 16, 11:52 PM CDTSevere Thunderstorm WarningTSAOsage, Pawnee68 min
May 17, 12:30 AM CDTSevere Thunderstorm WarningTSARogers, Tulsa60 min
May 17, 1:11 AM CDTSevere Thunderstorm WarningTSAOkmulgee64 min
May 17, 2:40 AM CDTSevere Thunderstorm WarningTSALeFlore, Sequoyah50 min
May 17, 3:03 AM CDTTornado WarningTSALeFlore, Sequoyah57 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.