Alert archive / Oklahoma / Special Weather Statements in 2021

Special Weather Statement, NWS Norman, OK

May 18, 2021Noble County, Oklahoma

NWS Norman, OK issued this special weather statement at May 18, 2021, 12:03 PM CDT for Noble County, Oklahoma. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 18, 2021, 12:03 PM CDT (17:03 UTC)
Expired
May 18, 2021, 12:30 PM CDT
In force
27 min
Issued by
NWS Norman, OK

County Noble County, OK

The radar

The Vance AFB radar (KVNX), 67 km from the middle of the area, began a volume at 17:05 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 12:00Z, 5.1 hours before the alert went out and 260 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 12:00Z on 2021-05-18Temperature 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, Dodge City, at 12:00Z on 2021-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1455 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 18, 5:46 AM CDT, 6 hours 17 minutes earlier.

Area forecast discussion, May 18, 5:46 AM CDT, 6 hours 17 minutes before
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    <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 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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Hazardous weather outlook, May 18, 11:11 AM CDT, 52 minutes before
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</head>
<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>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        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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In the hours before

Special weather statement, May 18, 12:03 PM CDT, 0 minutes before
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<body>
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      <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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      <p id="message2">
        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
May 17, 10:03 PM CDTSpecial Weather StatementOUNJackson27 min
May 17, 10:29 PM CDTSpecial Weather StatementOUNHarmon31 min
May 17, 10:42 PM CDTSevere Thunderstorm WarningOUNHarmon, Jackson33 min
May 17, 11:12 PM CDTSpecial Weather StatementOUNJackson33 min
May 17, 11:19 PM CDTSpecial Weather StatementOUNTillman41 min
May 17, 11:29 PM CDTSpecial Weather StatementOUNEllis, Harper, Roger Mills46 min
May 17, 11:43 PM CDTSevere Thunderstorm WarningOUNEllis, Woodward32 min
May 18, 12:19 AM CDTSpecial Weather StatementOUNWoodward56 min
May 18, 12:21 AM CDTSpecial Weather StatementOUNRoger Mills24 min
May 18, 12:44 AM CDTSpecial Weather StatementOUNWashita61 min
May 18, 1:02 AM CDTSpecial Weather StatementOUNWoodward58 min
May 18, 1:03 AM CDTSpecial Weather StatementOUNDewey57 min
May 18, 1:06 AM CDTSpecial Weather StatementOUNJefferson24 min
May 18, 1:28 AM CDTSpecial Weather StatementOUNMajor47 min
May 18, 2:00 AM CDTSpecial Weather StatementOUNComanche, Kiowa, Tillman30 min
May 18, 2:35 AM CDTSpecial Weather StatementOUNComanche, Cotton, Tillman55 min
May 18, 2:48 AM CDTSpecial Weather StatementOUNKingfisher42 min
May 18, 2:56 AM CDTSpecial Weather StatementOUNGarfield49 min
May 18, 3:36 AM CDTSpecial Weather StatementOUNKingfisher39 min
May 18, 4:14 PM CDTSpecial Weather StatementOUNAlfalfa31 min
May 18, 4:44 PM CDTSpecial Weather StatementOUNGarfield46 min
May 17, 7:00 PM CDTSevere Thunderstorm WarningOUNBaylor, Knox45 min
May 17, 7:11 PM CDTSpecial Weather StatementOUNWilbarger34 min
May 17, 7:22 PM CDTAreal Flood AdvisoryOUNKnox3 hr
May 17, 7:33 PM CDTSevere Thunderstorm WarningOUNBaylor, Knox42 min
May 17, 8:00 PM CDTSevere Thunderstorm WarningOUNArcher, Baylor, Wichita45 min
May 17, 8:17 PM CDTSevere Thunderstorm WarningOUNArcher, Wichita23 min
May 17, 8:19 PM CDTAreal Flood AdvisoryOUNBaylor3 hr
May 17, 8:33 PM CDTAreal Flood AdvisoryOUNArcher3 hr
May 17, 9:28 PM CDTAreal Flood AdvisoryOUNWichita3 hr

Nearby

Special Weather Statements in Oklahoma, 2021Every special weather statement in 2021

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.