Alert archive / Ohio / Winter Weather Advisories in 2011

Winter Weather Advisory 7, NWS Cleveland, OH

February 20, 201128 counties in Ohio; Crawford County, Erie County, Pennsylvania

NWS Cleveland, OH issued this winter weather advisory at Feb 20, 2011, 3:52 AM EST for 28 counties in Ohio; Crawford County, Erie County, Pennsylvania. It took effect at Feb 20, 2011, 2:00 PM EST. It was in force for 37 hr.

The area

The counties it named.

The facts

Issued: Feb 20, 2011, 3:52 AM EST (08:52 UTC)
In effect from: Feb 20, 2011, 2:00 PM EST
Expired: Feb 22, 2011, 3:00 AM EST
In force: 37 hr
Issued by: NWS Cleveland, OH

All 30 counties

Ashland County, OH, Ashtabula County, OH, Crawford County, OH, Cuyahoga County, OH, Erie County, OH, Geauga County, OH, Hancock County, OH, Holmes County, OH, Huron County, OH, Knox County, OH, Lake County, OH, Lorain County, OH, Lucas County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Morrow County, OH, Ottawa County, OH, Portage County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Wayne County, OH, Wood County, OH, Wyandot County, OH, Crawford County, PA, Erie County, PA

The radar

The Cleveland radar (KCLE), 34 km from the middle of the area, began a volume at 08:49 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

Detroit, MI (KDTX), launched 00:00Z, 8.9 hours before the alert went out and 204 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: 1736 m above ground
0-6 km bulk shear: 75 kt
0-1 km storm-relative helicity: -60 m²/s²
0-3 km storm-relative helicity: 12 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 Cleveland, OH wrote its last area forecast discussion before this winter weather advisory went out at Feb 19, 6:36 PM EST, 9 hours 16 minutes earlier.

Area forecast discussion, Feb 19, 6:36 PM EST, 9 hours 16 minutes before

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Hazardous weather outlook, Feb 19, 3:35 PM EST, 12 hours 17 minutes before

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  <link rel="stylesheet" href="index.css">
</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.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 20, 2:37 PM EST	Winter Storm Warning	CLE	Ashtabula, Geauga, Lake, Lucas, Trumbull	20 hr

Nearby

Winter Weather Advisories in Ohio, 2011 Winter Weather Advisories in Pennsylvania, 2011 Every winter weather advisory in 2011

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.