Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 48, NWS Tulsa, OK

April 14, 1986McIntosh County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 14, 1986, 12:20 AM CST for McIntosh County, Oklahoma. It was in force for 55 min.

The area

The counties it named.

The facts

Issued: Apr 14, 1986, 12:20 AM CST (06:20 UTC)
Expired: Apr 14, 1986, 1:15 AM CST
In force: 55 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County McIntosh 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, 6.3 hours before the alert went out and 175 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1389 J/kg
Mixed-layer CIN: -169 J/kg
Mixed-layer LCL: 1231 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 271 m²/s²
0-3 km storm-relative helicity: 466 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUL 140620
SVRTUL
OKC091-140715-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1220 AM CST MON APR 14 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 115 AM CST FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

OKLAHOMA...MCINTOSH

AT 1214 AM  A SEVERE THUNDESTORM WAS JUST EAST OF CHECOTAH
OKLAHOMA.

THE THUNDERSTORM WAS MOVING TO THE SOUTHEAST AT 45 MILES PER
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.

Issued	Product	Office	Counties	Lasted
Apr 13, 9:39 PM CST	Severe Thunderstorm Warning	TSA	Osage, Pawnee	66 min
Apr 13, 10:24 PM CST	Severe Thunderstorm Warning	TSA	Creek, Tulsa	66 min
Apr 13, 10:24 PM CST	Severe Thunderstorm Warning	TSA	Nowata	66 min
Apr 13, 10:47 PM CST	Severe Thunderstorm Warning	TSA	Craig, Rogers	58 min
Apr 13, 11:35 PM CST	Severe Thunderstorm Warning	TSA	Okmulgee, Wagoner	55 min
Apr 13, 11:56 PM CST	Severe Thunderstorm Warning	TSA	Muskogee	64 min
Apr 14, 12:09 AM CST	Severe Thunderstorm Warning	TSA	Cherokee	66 min
Apr 14, 12:28 AM CST	Severe Thunderstorm Warning	TSA	Haskell	62 min
Apr 14, 12:52 AM CST	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	68 min
Apr 14, 1:07 AM CST	Severe Thunderstorm Warning	TSA	LeFlore	68 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1986 Every 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.