Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 4, NWS Tulsa, OK

February 28, 1987McIntosh County, Pittsburg County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Feb 28, 1987, 12:03 AM CST for McIntosh County, Pittsburg County, Oklahoma. It was in force for 57 min.

The area

The counties it named.

The facts

Issued
Feb 28, 1987, 12:03 AM CST (06:03 UTC)
Expired
Feb 28, 1987, 1:00 AM CST
In force
57 min
Issued by
NWS Tulsa, OK
Area
Whole counties

Counties McIntosh County, OK, Pittsburg 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, 6.1 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 00:00Z on 1987-02-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 1987-02-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -78 square meters per square second.1939587897117136Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
-78 m²/s²
0-3 km storm-relative helicity
-29 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
TTAAOO KTUL 280603
SVRTUL
OKC091-121-280700-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1203 AM CST SAT FEB 28 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL  100 AM CST FOR PEOPLE IN THE FOLLOWING COUNTIES:
 
IN EAST CENTRAL OKLAHOMA
          ..MCINTOSH
IN SOUTHEAST OKLAHOMA
          ..PITTSBURG

AT 1201 AM CST THE TULSA RADAR INDICATED A SEVERE THUNDERSTORN
NEAR ASHLAND...IN WESTERN PITTSBURG COUNTY. THIS STORM WAS MOVING
TO THE NORTHEAST 40 MPH.
 
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
Feb 27, 10:34 PM CSTSevere Thunderstorm WarningTSAPittsburg56 min
Feb 27, 10:59 PM CSTSevere Thunderstorm WarningTSAMcIntosh, Okmulgee61 min
Feb 28, 12:29 AM CSTSevere Thunderstorm WarningTSALeFlore61 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; the sounding from the Mesonet's radiosonde archive.