Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 99, NWS Tulsa, OK

May 21, 1989Nowata County, Washington County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 21, 1989, 1:06 PM CDT for Nowata County, Washington County, Oklahoma. It was in force for 69 min. 4 reports 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
May 21, 1989, 1:06 PM CDT (18:06 UTC)
Expired
May 21, 1989, 2:15 PM CDT
In force
69 min
Issued by
NWS Tulsa, OK
Area
Whole counties

Counties Nowata County, OK, Washington 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
May 21, 1:25 PM CDTHail 1.75Washington, OK
May 21, 1:50 PM CDTHail 1.75Nowata, OK
May 21, 2:10 PM CDTHail 2.5Nowata, OK
May 21, 2:25 PM CDTHail 2.5Nowata, 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

Springfield, MO (KUMN), launched 12:00Z, 6.1 hours before the alert went out and 175 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 12:00Z on 1989-05-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 171 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, Springfield, MO at 12:00Z on 1989-05-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 133 square meters per square second.193958Sfc1 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
171 J/kg
Mixed-layer CIN
-167 J/kg
Mixed-layer LCL
1091 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
133 m²/s²
0-3 km storm-relative helicity
164 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.3

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
May 21, 1:06 PM CDTSevere Thunderstorm WarningTSACraig69 min
May 21, 2:03 PM CDTSevere Thunderstorm WarningTSACraig, Nowata57 min
May 21, 2:31 PM CDTSevere Thunderstorm WarningTSAOttawa59 min
May 21, 2:59 PM CDTSevere Thunderstorm WarningTSACraig, Delaware, Mayes61 min
May 21, 5:52 PM CDTSevere Thunderstorm WarningTSADelaware53 min
May 21, 3:27 PM CDTSevere Thunderstorm WarningTSABenton63 min
May 21, 4:24 PM CDTSevere Thunderstorm WarningTSABenton51 min
May 21, 4:33 PM CDTSevere Thunderstorm WarningTSAMadison57 min
May 21, 5:13 PM CDTTornado WarningTSABenton47 min
May 21, 5:20 PM CDTSevere Thunderstorm WarningTSAMadison, Washington55 min
May 21, 5:57 PM CDTTornado WarningTSAWashington48 min
May 21, 6:12 PM CDTSevere Thunderstorm WarningTSAMadison63 min
May 21, 6:48 PM CDTSevere Thunderstorm WarningTSAFranklin, Johnson57 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1989Every severe thunderstorm warning in 1989

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.