Alert archive / West Virginia / Mesoscale Discussions in 2005

Mesoscale Discussion 2045

August 20, 200511 counties in Kentucky; 9 counties in Ohio; 25 counties in West Virginia

The Storm Prediction Center issued this mesoscale discussion at Aug 20, 2005, 4:06 PM EDT for 11 counties in Kentucky; 9 counties in Ohio; 25 counties in West Virginia. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued
Aug 20, 2005, 4:06 PM EDT (20:06 UTC)
Expired
Aug 20, 2005, 5:30 PM EDT
In force
84 min
Issued by
the Storm Prediction Center
All 45 counties

Bath County, KY, Boyd County, KY, Carter County, KY, Clark County, KY, Elliott County, KY, Greenup County, KY, Lawrence County, KY, Menifee County, KY, Montgomery County, KY, Morgan County, KY, Rowan County, KY, Athens County, OH, Gallia County, OH, Hocking County, OH, Jackson County, OH, Lawrence County, OH, Meigs County, OH, Morgan County, OH, Vinton County, OH, Washington County, OH, Boone County, WV, Braxton County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Fayette County, WV, Gilmer County, WV, Harrison County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Lincoln County, WV, Mason County, WV, Nicholas County, WV, Pleasants County, WV, Putnam County, WV, Ritchie County, WV, Roane County, WV, Tyler County, WV, Upshur County, WV, Wayne County, WV, Webster County, WV, Wirt County, WV, Wood County, WV

The radar

The Charleston,WV radar (KRLX), 57 km from the middle of the area, began a volume at 20:10 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, 8.1 hours before the alert went out and 164 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2005-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2933 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2005-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2933 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
770 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
124 m²/s²
Significant tornado parameter
1.1
Supercell composite
9.0

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.

IssuedProductOfficeCountiesLasted
Aug 20, 12:31 PM EDTMesoscale DiscussionSPCBoone, Bourbon, Bracken, Campbell, Carroll, Fleming and 18 more89 min
Aug 20, 1:15 PM EDTSevere Thunderstorm WatchSPCAnderson, Boone, Bracken, Bullitt, Campbell, Carroll and 17 more6 hr
Aug 20, 2:35 PM EDTMesoscale DiscussionSPCBallard, Carlisle, Fulton, Graves, Hickman, Livingston and 2 more115 min
Aug 20, 3:11 PM EDTMesoscale DiscussionSPCAnderson, Boone, Bourbon, Bracken, Bullitt, Campbell and 23 more94 min
Aug 20, 4:55 PM EDTSevere Thunderstorm WatchSPCBath, Bourbon, Boyd, Carter, Clark, Elliott and 11 more6 hr
Aug 20, 7:10 PM EDTMesoscale DiscussionSPCBath, Boyd, Carter, Elliott, Fleming, Greenup and 4 more95 min
Aug 20, 3:10 PM EDTSevere Thunderstorm WatchSPCBelmont, Carroll, Columbiana, Coshocton, Guernsey, Harrison and 9 more6 hr

Nearby

Mesoscale Discussions in West Virginia, 2005Mesoscale Discussions in Kentucky, 2005Mesoscale Discussions in Ohio, 2005Every mesoscale discussion in 2005

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.