Alert archive / Ohio / Winter Weather Advisories in 2021

Winter Weather Advisory 9, NWS Wilmington, OH

February 9, 202112 counties in Ohio; 12 counties in Kentucky; 5 counties in Indiana

NWS Wilmington, OH issued this winter weather advisory at Feb 9, 2021, 3:05 PM EST for 12 counties in Ohio; 12 counties in Kentucky; 5 counties in Indiana. It took effect at Feb 10, 2021, 10:00 AM EST. It was in force for 20 hr.

The area

The counties it named.

The facts

Issued: Feb 9, 2021, 3:05 PM EST (20:05 UTC)
In effect from: Feb 10, 2021, 10:00 AM EST
Expired: Feb 11, 2021, 6:07 AM EST
In force: 20 hr
Issued by: NWS Wilmington, OH

All 29 counties

Dearborn County, IN, Franklin County, IN, Ohio County, IN, Ripley County, IN, Switzerland County, IN, Boone County, KY, Bracken County, KY, Campbell County, KY, Carroll County, KY, Gallatin County, KY, Grant County, KY, Kenton County, KY, Lewis County, KY, Mason County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY, Adams County, OH, Brown County, OH, Butler County, OH, Clermont County, OH, Clinton County, OH, Hamilton County, OH, Highland County, OH, Hocking County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 60 km from the middle of the area, began a volume at 20:05 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.1 hours before the alert went out and 62 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 600 m above ground
0-6 km bulk shear: 84 kt
0-1 km storm-relative helicity: -37 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Wilmington, OH wrote its last area forecast discussion before this winter weather advisory went out at Feb 9, 12:16 PM EST, 2 hours 49 minutes earlier.

Area forecast discussion, Feb 9, 12:16 PM EST, 2 hours 49 minutes before

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Hazardous weather outlook, Feb 9, 7:01 AM EST, 8 hours 4 minutes before

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In the hours before

Local storm report, Feb 9, 11:07 AM EST, 3 hours 58 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
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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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Local storm report, Feb 9, 12:25 PM EST, 2 hours 40 minutes before

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      <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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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Feb 9, 12:54 PM EST, 2 hours 11 minutes before

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      <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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      <p id="message2">
        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Feb 9, 12:57 PM EST, 2 hours 8 minutes before

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      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Feb 9, 1:00 PM EST, 2 hours 5 minutes before

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<head>
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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.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
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Local storm report, Feb 9, 2:02 PM EST, 1 hour 3 minutes before

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<head>
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  <title>Service Notice</title>
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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>
      <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.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 8, 9:29 PM EST	Winter Storm Warning	ILN	Brown, Butler, Clermont, Clinton, Fairfield, Fayette and 6 more	9 hr

Nearby

Winter Weather Advisories in Ohio, 2021 Winter Weather Advisories in Kentucky, 2021 Winter Weather Advisories in Indiana, 2021 Every winter weather advisory 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.