Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 672, NWS Norman, OK

August 9, 20235 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Aug 9, 2023, 12:13 AM CDT for 5 counties in Oklahoma. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 9, 2023, 12:13 AM CDT (05:13 UTC)
Expired
Aug 9, 2023, 1:00 AM CDT
In force
47 min
Issued by
NWS Norman, OK
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Beckham County, OK, Custer County, OK, Greer County, OK, Roger Mills County, OK, Washita County, OK

The radar

The Altus AFB radar (KFDR), 118 km from the middle of the area, began a volume at 05:14 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 5.2 hours before the alert went out and 271 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, Dodge City, at 00:00Z on 2023-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1845 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, Dodge City, at 00:00Z on 2023-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 square meters per square second.1939587897117Sfc1 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
1845 J/kg
Mixed-layer CIN
-155 J/kg
Mixed-layer LCL
1185 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
184 m²/s²
Significant tornado parameter
0.4
Supercell composite
1.8

Open this sounding in Storm Lab

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.

NWS Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 8, 11:05 PM CDT, 1 hour 8 minutes earlier.

Area forecast discussion, Aug 8, 11:05 PM CDT, 1 hour 8 minutes before
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Hazardous weather outlook, Aug 8, 11:10 PM CDT, 1 hour 3 minutes before
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In the hours before

Special weather statement, Aug 8, 11:45 PM CDT, 28 minutes before
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Special weather statement, Aug 9, 12:00 AM CDT, 13 minutes before
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  <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>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 11:13 PM CDTSevere Thunderstorm Warning Considerable damage threatOUNBeckham, Greer, Harmon, Jackson, Roger Mills47 min
Aug 8, 11:50 PM CDTSevere Thunderstorm WarningOUNGreer, Harmon, Jackson, Kiowa, Tillman40 min
Aug 9, 12:00 AM CDTSpecial Weather StatementOUNBeckham, Roger Mills30 min
Aug 9, 12:17 AM CDTSpecial Weather StatementOUNTillman43 min
Aug 9, 12:29 AM CDTSevere Thunderstorm WarningOUNComanche, Greer, Jackson, Kiowa, Tillman46 min
Aug 9, 12:46 AM CDTSpecial Weather StatementOUNTillman29 min
Aug 9, 12:51 AM CDTSevere Thunderstorm Warning Considerable damage threatOUNBlaine, Caddo, Canadian, Custer, Jackson, Kiowa and 1 more39 min
Aug 9, 12:54 AM CDTSpecial Weather StatementOUNComanche, Tillman51 min
Aug 9, 1:28 AM CDTSevere Thunderstorm WarningOUNBlaine, Caddo, Canadian, Custer, Grady, Kingfisher and 1 more32 min
Aug 9, 1:32 AM CDTSpecial Weather StatementOUNComanche, Cotton28 min
Aug 9, 1:48 AM CDTSevere Thunderstorm WarningOUNCaddo, Canadian, Cleveland, Grady, McClain, Oklahoma23 min
Aug 9, 1:57 AM CDTSpecial Weather StatementOUNCanadian33 min
Aug 9, 2:00 AM CDTSpecial Weather StatementOUNCotton, Grady30 min
Aug 9, 2:12 AM CDTSpecial Weather StatementOUNCanadian18 min
Aug 9, 2:34 AM CDTSpecial Weather StatementOUNCaddo, Canadian, Cleveland, Comanche, Grady, Logan and 2 more56 min
Aug 9, 3:12 AM CDTSpecial Weather StatementOUNComanche18 min
Aug 9, 3:21 AM CDTSevere Thunderstorm WarningOUNComanche24 min
Aug 9, 3:31 AM CDTSpecial Weather StatementOUNLincoln14 min
Aug 9, 3:45 AM CDTSpecial Weather StatementOUNComanche30 min
Aug 9, 4:57 PM CDTSpecial Weather StatementOUNJefferson33 min
Aug 9, 5:02 PM CDTSevere Thunderstorm WarningOUNCarter, Jefferson, Love43 min
Aug 9, 5:43 PM CDTSevere Thunderstorm WarningOUNCarter, Johnston, Love, Marshall47 min
Aug 9, 6:09 PM CDTSevere Thunderstorm WarningOUNLove21 min
Aug 9, 6:30 PM CDTSevere Thunderstorm WarningOUNLove, Marshall45 min
Aug 9, 6:55 PM CDTSevere Thunderstorm WarningOUNBryan, Love, Marshall50 min
Aug 8, 11:45 PM CDTSpecial Weather StatementOUNFoard, Hardeman30 min
Aug 9, 4:30 AM CDTSpecial Weather StatementOUNClay30 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2023Every severe thunderstorm warning in 2023

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; radar from the NEXRAD Level II archive.