Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 55, NWS Tulsa, OK

May 8, 1986Osage County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 8, 1986, 9:01 AM CDT for Osage County, Oklahoma. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
May 8, 1986, 9:01 AM CDT (14:01 UTC)
Expired
May 8, 1986, 10:00 AM CDT
In force
59 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Osage 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, 2.0 hours before the alert went out and 174 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 1986-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1258 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 1986-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 square meters per square second.193958Sfc1 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
1258 J/kg
Mixed-layer CIN
-72 J/kg
Mixed-layer LCL
591 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
235 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 
TTAA00 KTUL 081401
SVRTUL
OKC113-081500-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
901 AM CDT THU MAY 8 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1000 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

NORTHEAST OKLAHOMA...OSAGE

AT 858  AM  A SEVERE THUNDESTORM WAS 10 MILES NORTHWEST OF
CLEVELAND, OK.

THE THUNDERSTORM WAS MOVING TO THE NORTH NORTHEAST AT
25 MPH.

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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, May 8, 8:50 AM CDT, 11 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
848 AM CDT THU  MAY  8  1986

...HEAVY THUNDERSTORMS HAVE DEVELOPED....

AN AREA OF VERY HEAVY THUNDERSTORMS...SOME WITH STRONG GUSTY
WINDS AND HAIL...HAS DEVELOPED ACROSS PARTS OF NORTHEAST
OKLAHOMA.

ACCORDING TO NATIONAL WEATHER SERVICE RADARS...THUNDERSTORMS
HAVE INCREASED IN STRENGTH OVER PAWNEE COUNTY...OSAGE COUNTY
AND WASHINGTON COUNTY.  THESE STORMS ARE MOVING TO THE
NORTH NORTHEAST AT 25 MPH.

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.