Alert archive / Kentucky / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 10, NWS Jackson, KY

April 8, 20107 counties in Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Apr 8, 2010, 10:16 AM EDT for 7 counties in Kentucky. It was in force for 29 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: Apr 8, 2010, 10:16 AM EDT (14:16 UTC)
Expired: Apr 8, 2010, 10:45 AM EDT
In force: 29 min
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Hail: 0.5 in
Wind: 60.0 mph

Counties Floyd County, KY, Johnson County, KY, Knott County, KY, Letcher County, KY, Magoffin County, KY, Martin County, KY, Pike County, KY

The radar

The Jackson,KY radar (KJKL), 48 km from the middle of the area, began a volume at 14:16 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

Roanoke, VA (KRNK), launched 12:00Z, 2.3 hours before the alert went out and 291 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: 941 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 40 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 severe thunderstorm warning 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 severe thunderstorm warning went out at Apr 7, 6:46 PM EDT, 15 hours 30 minutes earlier.

Area forecast discussion, Apr 7, 6:46 PM EDT, 15 hours 30 minutes before

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Hazardous weather outlook, Apr 7, 6:02 PM EDT, 16 hours 14 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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The office that day

Everything else NWS Jackson, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 8, 10:43 AM EDT	Severe Thunderstorm Warning	JKL	Martin, Pike	32 min
Apr 8, 4:28 PM EDT	Freeze Watch	JKL	Bath, Bell, Breathitt, Clay, Elliott, Estill and 27 more	23 hr

Nearby

Severe Thunderstorm Warnings in Kentucky, 2010 Every severe thunderstorm warning in 2010

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.