Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 94, NWS Tulsa, OK

September 15, 1987Tulsa County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Sep 15, 1987, 8:35 PM CDT for Tulsa County, Oklahoma. It was in force for 40 min. 1 report 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
Sep 15, 1987, 8:35 PM CDT (01:35 UTC)
Expired
Sep 15, 1987, 9:15 PM CDT
In force
40 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Tulsa 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
Sep 15, 8:50 PM CDTThunderstorm Wind 52Tulsa, 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

Ok Cty/Will Rgrs, OK (KOKC), launched 00:00Z, 1.6 hours before the alert went out and 170 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 1987-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2193 joules per kilogram.LCLEL10008507005003002001001 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 1987-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 square meters per square second.1939587897Sfc1 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
2193 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
1083 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
1.3
Supercell composite
4.8

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
Sep 15, 7:15 PM CDTSevere Thunderstorm WarningTSAOsage, Tulsa60 min
Sep 15, 7:45 PM CDTSevere Thunderstorm WarningTSARogers, Tulsa60 min
Sep 15, 7:54 PM CDTSevere Thunderstorm WarningTSACreek60 min
Sep 15, 10:06 PM CDTSevere Thunderstorm WarningTSAAdair24 min
Sep 15, 10:15 PM CDTSevere Thunderstorm WarningTSABenton, Washington60 min
Sep 15, 11:23 PM CDTSevere Thunderstorm WarningTSACrawford, Sebastian67 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.