Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 40, NWS Tulsa, OK

June 15, 1987Cherokee County, Muskogee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jun 15, 1987, 2:18 PM CDT for Cherokee County, Muskogee County, Oklahoma. It was in force for 57 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
Jun 15, 1987, 2:18 PM CDT (19:18 UTC)
Expired
Jun 15, 1987, 3:15 PM CDT
In force
57 min
Issued by
NWS Tulsa, OK
Area
Whole counties

Counties Cherokee County, OK, Muskogee 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
Jun 15, 2:20 PM CDTHail 0.75Muskogee, OK
Jun 15, 2:40 PM CDTHail 0.88Cherokee, 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 12:00Z, 7.3 hours before the alert went out and 178 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 12:00Z on 1987-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2473 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 12:00Z on 1987-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
2473 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
1288 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
26 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 KTUL 151933 RRA
SVRTUL
OKC021-101-152030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
218 PM CDT MON JUN 15 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL  315 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN EAST CENTRAL OKLAHOMA
 ...SOUTHERN CHEROKEE AND NORTHEASTERN MUSKOGEE...
 
AT 208 PM CDT A SEVERE THUNDERSTORM WAS LOCATED 12 MILES SOUTHEAST OF
TAHLEQUAH OKLAHOMA. MOVEMENT WAS TO THE WEST AT 15 MILES AN HOUR.
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
Jun 15, 4:33 PM CDTSevere Thunderstorm WarningTSACreek52 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1987Every severe thunderstorm warning in 1987

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.