Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 158, NWS Norman, OK

April 22, 1990Woods County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Apr 22, 1990, 5:12 PM CDT for Woods County, Oklahoma. It was in force for 33 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
Apr 22, 1990, 5:12 PM CDT (22:12 UTC)
Expired
Apr 22, 1990, 5:45 PM CDT
In force
33 min
Issued by
NWS Norman, OK
Area
Whole counties

County Woods 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
Apr 22, 5:20 PM CDTHail 1Woods, 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

Norman, OK (KOUN), launched 12:00Z, 10.2 hours before the alert went out and 217 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, Norman, OK at 12:00Z on 1990-04-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 976 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, Norman, OK at 12:00Z on 1990-04-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.1939Sfc1 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
976 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
876 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
48 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 Norman, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 21, 7:52 PM CDTSevere Thunderstorm WarningOUNLincoln, Pottawatomie38 min
Apr 22, 2:44 PM CDTSevere Thunderstorm WarningOUNRoger Mills46 min
Apr 22, 4:12 PM CDTSevere Thunderstorm WarningOUNRoger Mills48 min
Apr 22, 4:37 PM CDTSevere Thunderstorm WarningOUNLogan, Oklahoma53 min
Apr 22, 4:43 PM CDTSevere Thunderstorm WarningOUNPottawatomie32 min
Apr 22, 5:28 PM CDTSevere Thunderstorm WarningOUNBeckham, Roger Mills47 min
Apr 22, 6:15 PM CDTSevere Thunderstorm WarningOUNRoger Mills45 min
Apr 22, 6:51 PM CDTFlash Flood WarningOUNRoger Mills2 hr
Apr 22, 6:55 PM CDTSevere Thunderstorm WarningOUNRoger Mills65 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1990Every severe thunderstorm warning in 1990

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.