Alert archive / Kentucky / Mesoscale Discussions in 2004

Mesoscale Discussion 953

May 27, 200422 counties in Kentucky

The Storm Prediction Center issued this mesoscale discussion at May 27, 2004, 7:22 PM EDT for 22 counties in Kentucky. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued: May 27, 2004, 7:22 PM EDT (23:22 UTC)
Expired: May 27, 2004, 8:15 PM EDT
In force: 53 min
Issued by: the Storm Prediction Center

All 22 counties

Anderson County, KY, Bath County, KY, Bourbon County, KY, Carroll County, KY, Clark County, KY, Fayette County, KY, Fleming County, KY, Franklin County, KY, Gallatin County, KY, Grant County, KY, Harrison County, KY, Henry County, KY, Menifee County, KY, Montgomery County, KY, Nicholas County, KY, Owen County, KY, Robertson County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Trimble County, KY, Woodford County, KY

The radar

The Louisville radar (KLVX), 116 km from the middle of the area, began a volume at 23:23 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.4 hours before the alert went out and 152 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: 97 J/kg
Mixed-layer CIN: -177 J/kg
Mixed-layer LCL: 587 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 264 m²/s²
0-3 km storm-relative helicity: 295 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 26, 8:57 PM EDT	Mesoscale Discussion	SPC	Allen, Ballard, Butler, Caldwell, Calloway, Carlisle and 24 more	63 min
May 26, 9:55 PM EDT	Tornado Watch	SPC	Crittenden, Daviess, Henderson, Hopkins, Livingston, McLean and 3 more	5 hr
May 27, 12:14 AM EDT	Mesoscale Discussion	SPC	Caldwell, Crittenden, Daviess, Henderson, Hopkins, Livingston and 4 more	2 hr
May 27, 2:53 AM EDT	Mesoscale Discussion	SPC	Bath, Boone, Bourbon, Boyd, Bracken, Carroll and 31 more	3 hr
May 27, 2:07 PM EDT	Mesoscale Discussion	SPC	Boone, Campbell, Kenton	113 min
May 27, 5:00 PM EDT	Severe Thunderstorm Watch	SPC	Bullitt, Jefferson, Meade	4 hr
May 27, 7:35 PM EDT	Mesoscale Discussion	SPC	Anderson, Bath, Boone, Bourbon, Boyd, Bracken and 33 more	25 min
May 27, 7:55 PM EDT	Tornado Watch	SPC	Anderson, Bath, Boone, Bourbon, Boyd, Bracken and 28 more	5 hr

Nearby

Mesoscale Discussions in Kentucky, 2004 Every mesoscale discussion in 2004

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.