Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 91, NWS Tulsa, OK

July 12, 1986Osage County, Washington County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 12, 1986, 9:53 PM CDT for Osage County, Washington County, Oklahoma. It was in force for 67 min.

The area

The counties it named.

The facts

Issued
Jul 12, 1986, 9:53 PM CDT (02:53 UTC)
Expired
Jul 12, 1986, 11:00 PM CDT
In force
67 min
Issued by
NWS Tulsa, OK
Area
Whole counties

Counties Osage County, OK, Washington 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, 2.9 hours before the alert went out and 192 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 1986-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2858 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 00:00Z on 1986-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 square meters per square second.1939Sfc1 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
2858 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
1869 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
166 m²/s²
Significant tornado parameter
0.1
Supercell composite
5.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUL 130253
SVRTUL
OKC147-113-130400-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
953 PM CDT SAT JUL 12 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1100 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

NORTHEAST OKLAHOMA...WASHINGTON AND OSAGE

AT 953  PM  SEVERE THUNDESTORMS WERE LOCATED JUST WEST OF
KAW CITY AND 5 MILES NORTHWEST OF BARTLESVILLE OKLAHOMA.

THESE THUNDERSTORMS WERE MOVING TO THE SOUTHEAST AT 15 TO
20 MILES AN HOUR.

THIS THUNDERSTORM WILL LIKELY PRODUCE WINDS IN EXCESS OF 60
MILES AN HOUR AND HAIL 3/4 INCH OR LARGER IN DIAMETER.

IF YOU ARE IN OR NEAR THE WARNING AREA GET TO A REINFORCED SHELTER
AND PREPARE FOR STRONG DAMAGING WIND...LARGE HAIL...VERY HEAVY
RAINFALL AND LIGHTNING.  PEOPLE IN MOBILE HOMES SHOULD SEEK
SHELTER IN A NEARBY REINFORCED BUILDING OR GET INTO A DITCH OR
OTHER GROUND DEPRESSION.

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
Jul 12, 8:50 PM CDTSevere Thunderstorm WarningTSAOsage55 min
Jul 12, 9:20 PM CDTSevere Thunderstorm WarningTSACraig, Ottawa55 min
Jul 12, 9:20 PM CDTSevere Thunderstorm WarningTSANowata55 min
Jul 12, 10:24 PM CDTSevere Thunderstorm WarningTSADelaware, Mayes66 min
Jul 12, 11:02 PM CDTSevere Thunderstorm WarningTSARogers58 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1986Every severe thunderstorm warning 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.