Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 32, NWS Norman, OK

February 27, 1987Hughes County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Feb 27, 1987, 10:17 PM CST for Hughes County, Oklahoma. It was in force for 58 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
Feb 27, 1987, 10:17 PM CST (04:17 UTC)
Expired
Feb 27, 1987, 11:15 PM CST
In force
58 min
Issued by
NWS Norman, OK
Area
Whole counties

County Hughes 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
Feb 27, 10:25 PM CSTHail 1.75Hughes, 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, 4.3 hours before the alert went out and 129 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

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 Norman, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 27, 8:30 PM CSTSevere Thunderstorm WarningOUNMarshall45 min
Feb 27, 8:47 PM CSTSevere Thunderstorm WarningOUNJohnston43 min
Feb 27, 9:28 PM CSTSevere Thunderstorm WarningOUNCoal, Johnston47 min
Feb 27, 10:28 PM CSTSevere Thunderstorm WarningOUNMarshall47 min
Feb 27, 10:50 PM CSTSevere Thunderstorm WarningOUNJohnston24 hr
Feb 27, 11:06 PM CSTSevere Thunderstorm WarningOUNAtoka, Coal54 min
Feb 28, 12:02 AM CSTSevere Thunderstorm WarningOUNAtoka43 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.