Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 21, NWS Norman, OK

March 11, 1986Jackson County, Kiowa County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Mar 11, 1986, 6:57 AM CST for Jackson County, Kiowa County, Oklahoma. It was in force for 43 min.

The area

The counties it named.

The facts

Issued
Mar 11, 1986, 6:57 AM CST (12:57 UTC)
Expired
Mar 11, 1986, 7:40 AM CST
In force
43 min
Issued by
NWS Norman, OK
Area
Whole counties

Counties Jackson County, OK, Kiowa 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

Fort Sill, OK (KFSI), launched 12:00Z, 1.0 hours before the alert went out and 74 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, Fort Sill, OK at 12:00Z on 1986-03-11Temperature 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, Fort Sill, OK at 12:00Z on 1986-03-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 461 square meters per square second.193958Sfc1 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
1930 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
461 m²/s²
0-3 km storm-relative helicity
571 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOKC 111257
SVROKC
OKC065-075-111340-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
657 AM CST TUE MAR 11 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 740 AM CST FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

SOUTHWEST OKLAHOMA...EASTERN JACKSON AND SOUTHERN KIOWA

AT 655 AM, A SEVERE THUNDERSTORM WAS LOCATED 10 MILES EAST OF ALTUS.
THIS STORM IS MOVING TO THE NORTHEAST AT 25 MILES AN HOUR. PERSONS
IN MOUNTAIN PARK AND ROOSEVELT ARE IN THE PATH OF THIS STORM.

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

IF YOU OBSERVE HAIL PENNY SIZE OR LARGER OR ANY WIND DAMAGE..NOTIFY
YOUR LOCAL LAW ENFORCEMENT AGENCY OR THE NATIONAL WEATHER SERVICE
IN OKLAHOMA CITY.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 11, 1:00 PM CSTSevere Thunderstorm WarningOUNCarter, Love45 min
Mar 11, 3:39 PM CSTSevere Thunderstorm WarningOUNCleveland, McClain46 min
Mar 11, 4:20 PM CSTSevere Thunderstorm WarningOUNPottawatomie, Seminole40 min
Mar 11, 4:47 PM CSTSevere Thunderstorm WarningOUNCleveland, McClain43 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.