Alert archive / Kentucky / Mesoscale Discussions in 2004

Mesoscale Discussion 1885

August 4, 20047 states

The Storm Prediction Center issued this mesoscale discussion at Aug 4, 2004, 3:39 PM CDT for 7 states. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued
Aug 4, 2004, 3:39 PM CDT (20:39 UTC)
Expired
Aug 4, 2004, 5:15 PM CDT
In force
96 min
Issued by
the Storm Prediction Center
All 160 counties

Hardin County, IL, Massac County, IL, Pope County, IL, Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Perry County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Bell County, KY, Bourbon County, KY, Boyd County, KY, Boyle County, KY, Breathitt County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carter County, KY, Casey County, KY, Christian County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Crittenden County, KY, Cumberland County, KY, Daviess County, KY, Edmonson County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Floyd County, KY, Franklin County, KY, Garrard County, KY, Graves County, KY, Grayson County, KY, Green County, KY, Greenup County, KY, Hancock County, KY, Hardin County, KY, Harlan County, KY, Harrison County, KY, Hart County, KY, Henderson County, KY, Henry County, KY, Hopkins County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Larue County, KY, Laurel County, KY, Lawrence County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Lewis County, KY, Lincoln County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Madison County, KY, Magoffin County, KY, Marion County, KY, Marshall County, KY, Martin County, KY, Mason County, KY, McCracken County, KY, McCreary County, KY, McLean County, KY, Meade County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Montgomery County, KY, Morgan County, KY, Muhlenberg County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Owen County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Robertson County, KY, Rockcastle County, KY, Rowan County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Warren County, KY, Washington County, KY, Wayne County, KY, Webster County, KY, Whitley County, KY, Wolfe County, KY, Woodford County, KY, Lawrence County, OH, Cheatham County, TN, Clay County, TN, Fentress County, TN, Henry County, TN, Houston County, TN, Jackson County, TN, Macon County, TN, Montgomery County, TN, Overton County, TN, Pickett County, TN, Robertson County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Buchanan County, VA, City of Norton, VA, Dickenson County, VA, Russell County, VA, Tazewell County, VA, Wise County, VA, Boone County, WV, Braxton County, WV, Cabell County, WV, Clay County, WV, Fayette County, WV, Jackson County, WV, Kanawha County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, McDowell County, WV, Mercer County, WV, Mingo County, WV, Nicholas County, WV, Putnam County, WV, Raleigh County, WV, Roane County, WV, Wayne County, WV, Wyoming County, WV

The radar

The Jackson,KY radar (KJKL), 89 km from the middle of the area, began a volume at 20:41 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 12:00Z, 8.7 hours before the alert went out and 194 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 2004-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 694 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 2004-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.1939Sfc1 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
694 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
886 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
5 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 3, 7:38 PM CDTMesoscale DiscussionSPCBureau, Cook, DeKalb, DuPage, Ford, Grundy and 14 more67 min
Aug 3, 7:55 PM CDTSevere Thunderstorm WatchSPCBoone, Bureau, Cook, DeKalb, DuPage, Ford and 21 more5 hr
Aug 3, 8:19 PM CDTMesoscale DiscussionSPCCarroll, Henry, Jo Daviess, Knox, Mercer, Rock Island and 2 more56 min
Aug 3, 9:45 PM CDTSevere Thunderstorm WatchSPCFulton, Hancock, Henderson, Henry, Knox, McDonough and 3 more5 hr
Aug 3, 9:52 PM CDTMesoscale DiscussionSPCCook, DuPage, Grundy, Kane, Kendall, Lake and 3 more53 min
Aug 3, 10:38 PM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Greene, Jersey and 3 more67 min
Aug 3, 11:30 PM CDTSevere Thunderstorm WatchSPCAdams, Brown, Calhoun, Cass, Champaign, Christian and 32 more6 hr
Aug 4, 1:42 AM CDTMesoscale DiscussionSPCFulton, Henderson, Jersey, Livingston, McDonough, Mason and 5 more2 hr
Aug 4, 3:52 AM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Champaign, Christian and 32 more53 min
Aug 3, 10:35 PM CDTSevere Thunderstorm WatchSPCAdams, Allen, Benton, Blackford, Carroll, Cass and 26 more5 hr
Aug 3, 11:47 PM CDTMesoscale DiscussionSPCBenton, Carroll, Cass, Elkhart, Fulton, Kosciusko and 9 more58 min
Aug 4, 1:15 AM CDTMesoscale DiscussionSPCAdams, Allen, Benton, Blackford, Carroll, Cass and 26 more90 min
Aug 4, 5:44 AM CDTMesoscale DiscussionSPCAdams, Allen, Blackford, Boone, Carroll, Clay and 28 more2 hr
Aug 4, 1:01 PM CDTMesoscale DiscussionSPCClark, Crawford, Dubois, Floyd, Harrison, Jefferson and 7 more89 min
Aug 4, 1:30 PM CDTSevere Thunderstorm WatchSPCClark, Crawford, Floyd, Harrison, Perry6 hr
Aug 4, 9:39 AM CDTMesoscale DiscussionSPCBoone, Bracken, Campbell, Greenup, Kenton, Lewis and 2 more2 hr
Aug 4, 1:31 PM CDTMesoscale DiscussionSPCBoyd, Fleming, Greenup, Lewis119 min
Aug 4, 10:55 AM CDTSevere Thunderstorm WatchSPCAdams, Athens, Belmont, Carroll, Columbiana, Coshocton and 24 more5 hr
Aug 4, 1:55 PM CDTSevere Thunderstorm WatchSPCClarke, Frederick, City of Winchester6 hr
Aug 4, 4:48 PM CDTMesoscale DiscussionSPCClarke, Frederick, City of Winchester117 min
Aug 4, 6:10 PM CDTSevere Thunderstorm WatchSPCArlington, Fairfax, Prince William, City of Alexandria, City of Fairfax, City of Falls Church and 2 more4 hr

Nearby

Mesoscale Discussions in Kentucky, 2004Mesoscale Discussions in West Virginia, 2004Mesoscale Discussions in Tennessee, 2004Every 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.