Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 313, NWS Norman, OK

May 30, 1990Stephens County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 30, 1990, 2:13 AM CDT for Stephens County, Oklahoma. It was in force for 47 min.

The area

The counties it named.

The facts

Issued
May 30, 1990, 2:13 AM CDT (07:13 UTC)
Expired
May 30, 1990, 3:00 AM CDT
In force
47 min
Issued by
NWS Norman, OK
Area
Whole counties

County Stephens 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

Norman, OK (KOUN), launched 00:00Z, 7.2 hours before the alert went out and 91 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 00:00Z on 1990-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 15 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 00:00Z on 1990-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 square meters per square second.19395878Sfc1 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
15 J/kg
Mixed-layer CIN
-133 J/kg
Mixed-layer LCL
1323 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
321 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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, May 29, 11:16 PM CDT, 2 hours 57 minutes before
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Local storm report, May 29, 11:35 PM CDT, 2 hours 38 minutes before
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Special weather statement, May 29, 11:41 PM CDT, 2 hours 32 minutes before
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<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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The office that day

Everything else NWS Norman, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 29, 7:00 PM CDTSevere Thunderstorm WarningOUNWashita60 min
May 29, 7:23 PM CDTFlash Flood WarningOUNKiowa, Washita3 hr
May 29, 7:23 PM CDTFlash Flood WarningOUNCuster, Dewey, Roger Mills3 hr
May 29, 7:26 PM CDTSevere Thunderstorm WarningOUNKiowa49 min
May 29, 7:38 PM CDTSevere Thunderstorm WarningOUNCuster52 min
May 29, 7:52 PM CDTSevere Thunderstorm WarningOUNBlaine, Caddo53 min
May 29, 8:05 PM CDTSevere Thunderstorm WarningOUNCaddo, Kiowa, Washita25 min
May 29, 8:17 PM CDTSevere Thunderstorm WarningOUNCanadian, Kingfisher58 min
May 29, 8:33 PM CDTSevere Thunderstorm WarningOUNCaddo, Kiowa42 min
May 29, 9:00 PM CDTSevere Thunderstorm WarningOUNCanadian, Grady60 min
May 29, 9:40 PM CDTSevere Thunderstorm WarningOUNCleveland, Oklahoma65 min
May 29, 9:40 PM CDTSevere Thunderstorm WarningOUNMcClain65 min
May 29, 9:52 PM CDTSevere Thunderstorm WarningOUNCuster53 min
May 29, 10:27 PM CDTSevere Thunderstorm WarningOUNJackson, Kiowa48 min
May 29, 11:51 PM CDTSevere Thunderstorm WarningOUNCaddo, Comanche54 min
May 30, 1:32 AM CDTSevere Thunderstorm WarningOUNCotton43 min
May 30, 3:48 PM CDTTornado WarningOUNLincoln27 min
May 30, 4:05 PM CDTTornado WarningOUNAtoka40 min
May 30, 4:12 PM CDTTornado WarningOUNLincoln48 min
May 30, 4:45 PM CDTSevere Thunderstorm WarningOUNAtoka45 min
May 30, 5:36 PM CDTSevere Thunderstorm WarningOUNBryan39 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; the sounding from the Mesonet's radiosonde archive.