Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 93, NWS Tulsa, OK

July 12, 1986Rogers County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 12, 1986, 11:02 PM CDT for Rogers County, Oklahoma. It was in force for 58 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 12, 1986, 11:02 PM CDT (04:02 UTC)
Expired
Jul 13, 1986, 12:00 AM CDT
In force
58 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Rogers County, OK

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Jul 12, 11:15 PM CDTThunderstorm Wind 0Rogers, OK
Jul 12, 11:15 PM CDTThunderstorm Wind 0Rogers, OK

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Springfield, MO (KUMN), launched 00:00Z, 4.0 hours before the alert went out and 171 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, Springfield, MO at 00:00Z on 1986-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3026 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, Springfield, MO at 00:00Z on 1986-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 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
3026 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
1047 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
261 m²/s²
Significant tornado parameter
2.7
Supercell composite
16.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOKC 130409
SVRTUL
OKC131-130500-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1102 PM CDT SAT JUL 12 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 12 MIDNIGHT CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES OF NORTHEAST OKLAHOMA..

ROGERS.

AT 1102 PM  A SEVERE THUNDESTORM WAS LOCATED 8 MILES WEST OF CHELSEA
MOVING SOUTHEAST AT 25 MPH.

THIS THUNDERSTORM W3ILL LIKELY PRODUCE WINDS IN EXCESS OF 60
MILES AN HOUR AND HAIL 3/4 INCH OR LARGER IN DIAMETER.

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, 9:53 PM CDTSevere Thunderstorm WarningTSAOsage, Washington67 min
Jul 12, 10:24 PM CDTSevere Thunderstorm WarningTSADelaware, Mayes66 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.