Alert archive / Kentucky / Wind Chill Advisories in 2015

Wind Chill Advisory 3, NWS Jackson, KY

February 18, 201533 counties in Kentucky

NWS Jackson, KY issued this wind chill advisory at Feb 18, 2015, 4:15 AM EST for 33 counties in Kentucky. It took effect at Feb 18, 2015, 3:41 PM EST. It was in force for 40 hr.

The area

The counties it named.

The facts

Issued: Feb 18, 2015, 4:15 AM EST (09:15 UTC)
In effect from: Feb 18, 2015, 3:41 PM EST
Expired: Feb 20, 2015, 8:00 AM EST
In force: 40 hr
Issued by: NWS Jackson, KY

All 33 counties

Bath County, KY, Bell County, KY, Breathitt County, KY, Clay County, KY, Elliott County, KY, Estill County, KY, Fleming County, KY, Floyd County, KY, Harlan County, KY, Jackson County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Laurel County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Magoffin County, KY, Martin County, KY, McCreary County, KY, Menifee County, KY, Montgomery County, KY, Morgan County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Rowan County, KY, Wayne County, KY, Whitley County, KY, Wolfe County, KY

The radar

The Jackson,KY radar (KJKL), 26 km from the middle of the area, began a volume at 09:17 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 00:00Z, 9.3 hours before the alert went out and 218 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: 1046 m above ground
0-6 km bulk shear: 81 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 162 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 wind chill advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jackson, KY wrote its last area forecast discussion before this wind chill advisory went out at Feb 18, 3:27 AM EST, 48 minutes earlier.

Area forecast discussion, Feb 18, 3:27 AM EST, 48 minutes before

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Hazardous weather outlook, Feb 17, 4:07 PM EST, 12 hours 8 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 Jackson, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 18, 10:30 AM EST	Special Weather Statement	JKL	Bell, Breathitt, Clay, Floyd, Harlan, Johnson and 11 more	90 min
Feb 18, 11:12 AM EST	Winter Storm Warning	JKL	Breathitt, Estill, Floyd, Jackson, Knott, Lee and 7 more	4 hr
Feb 18, 12:09 PM EST	Special Weather Statement	JKL	Lee	36 min
Feb 18, 3:41 PM EST	Wind Chill Warning	JKL	Bath, Bell, Breathitt, Clay, Elliott, Estill and 27 more	19 hr
Feb 18, 3:41 PM EST	Wind Chill Advisory	JKL	Bell, Breathitt, Clay, Elliott, Floyd, Harlan and 14 more	33 hr
Feb 18, 5:15 PM EST	Special Weather Statement	JKL	Lee	12 hr
Feb 18, 5:39 PM EST	Special Weather Statement	JKL	Lee	11 hr

Nearby

Wind Chill Advisories in Kentucky, 2015 Every wind chill advisory in 2015

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.