Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 6, NWS Tulsa, OK

February 28, 1987LeFlore County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Feb 28, 1987, 12:29 AM CST for LeFlore County, Oklahoma. It was in force for 61 min.

The area

The counties it named.

The facts

Issued
Feb 28, 1987, 12:29 AM CST (06:29 UTC)
Expired
Feb 28, 1987, 1:30 AM CST
In force
61 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County LeFlore 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

Springfield, MO (KUMN), launched 00:00Z, 6.5 hours before the alert went out and 237 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 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, Springfield, MO at 00:00Z on 1987-02-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 99 square meters per square second.1939587897117Sfc1 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
546 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
99 m²/s²
0-3 km storm-relative helicity
101 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, 12:03 AM CSTSevere Thunderstorm WarningTSAMcIntosh, Pittsburg57 min
Feb 28, 12:21 AM CSTSevere Thunderstorm WarningTSABenton, Washington54 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.