Alert archive / Kentucky / Mesoscale Discussions in 2006

Mesoscale Discussion 2007

September 22, 20064 states

The Storm Prediction Center issued this mesoscale discussion at Sep 22, 2006, 2:55 PM CDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Sep 22, 2006, 2:55 PM CDT (19:55 UTC)
Expired
Sep 22, 2006, 5:00 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 32 counties

Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Saline County, IL, White County, IL, Posey County, IN, Vanderburgh County, IN, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Benton County, TN, Henry County, TN, Obion County, TN, Stewart County, TN, Weakley County, TN

The radar

The Paducah radar (KPAH), 39 km from the middle of the area, began a volume at 19:56 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

Nashville Metro, TN (KBNA), launched 12:00Z, 7.9 hours before the alert went out and 181 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, Nashville Metro, TN at 12:00Z on 2006-09-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Nashville Metro, TN at 12:00Z on 2006-09-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 415 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
974 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
415 m²/s²
0-3 km storm-relative helicity
476 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

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
Sep 22, 12:49 PM CDTMesoscale DiscussionSPCAdams, Alexander, Bond, Brown, Calhoun, Cass and 38 more2 hr
Sep 22, 1:16 PM CDTTornado WatchSPCAdams, Alexander, Bond, Brown, Calhoun, Cass and 42 more8 hr
Sep 22, 2:20 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 30 more2 hr
Sep 22, 3:00 PM CDTMesoscale DiscussionSPCAdams, Alexander, Bond, Brown, Calhoun, Cass and 45 more90 min
Sep 22, 3:32 PM CDTTornado WatchSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 33 more6 hr
Sep 22, 3:37 PM CDTTornado WatchSPCEdwards, Gallatin, Hamilton, Hardin, Massac, Pope and 4 more8 hr
Sep 22, 5:08 PM CDTMesoscale DiscussionSPCAlexander, Bond, Brown, Calhoun, Cass, Christian and 44 more2 hr
Sep 22, 5:37 PM CDTMesoscale DiscussionSPCBoone, Bureau, Cook, DeKalb, DuPage, Ford and 24 more113 min
Sep 22, 3:34 PM CDTMesoscale DiscussionSPCBartholomew, Boone, Brown, Clark, Clinton, Crawford and 35 more116 min
Sep 22, 4:08 AM CDTMesoscale DiscussionSPCFulton67 min
Sep 22, 12:15 PM CDTMesoscale DiscussionSPCFulton, Hickman90 min
Sep 22, 4:39 AM CDTTornado WatchSPCChester, Crockett, Dyer, Fayette, Hardeman, Hardin and 6 more5 hr
Sep 22, 8:35 AM CDTMesoscale DiscussionSPCFayette, Haywood, Lauderdale, Shelby, Tipton85 min
Sep 22, 9:10 AM CDTTornado Watch PDSSPCCrockett, Dyer, Fayette, Haywood, Lake, Lauderdale and 3 more9 hr
Sep 22, 1:11 PM CDTMesoscale DiscussionSPCBenton, Carroll, Chester, Decatur, Gibson, Giles and 14 more94 min
Sep 22, 6:29 PM CDTTornado WatchSPCCarroll, Crockett, Dyer, Gibson, Haywood, Henry and 6 more7 hr

Nearby

Mesoscale Discussions in Kentucky, 2006Mesoscale Discussions in Illinois, 2006Mesoscale Discussions in Tennessee, 2006Every mesoscale discussion in 2006

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.