Alert archive / Illinois / Mesoscale Discussions in 2008

Mesoscale Discussion 1208

June 4, 200829 counties in Illinois; 29 counties in Indiana; 4 counties in Iowa

The Storm Prediction Center issued this mesoscale discussion at Jun 4, 2008, 5:51 PM CDT for 29 counties in Illinois; 29 counties in Indiana; 4 counties in Iowa. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued
Jun 4, 2008, 5:51 PM CDT (22:51 UTC)
Expired
Jun 4, 2008, 7:15 PM CDT
In force
84 min
Issued by
the Storm Prediction Center
All 62 counties

Cedar County, IA, Clinton County, IA, Muscatine County, IA, Scott County, IA, Bureau County, IL, Carroll County, IL, Champaign County, IL, DeKalb County, IL, Ford County, IL, Grundy County, IL, Henderson County, IL, Henry County, IL, Iroquois County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Knox County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, Marshall County, IL, McLean County, IL, Mercer County, IL, Ogle County, IL, Peoria County, IL, Putnam County, IL, Rock Island County, IL, Stark County, IL, Vermilion County, IL, Warren County, IL, Whiteside County, IL, Will County, IL, Woodford County, IL, Benton County, IN, Boone County, IN, Carroll County, IN, Cass County, IN, Clinton County, IN, Delaware County, IN, Fountain County, IN, Fulton County, IN, Grant County, IN, Hamilton County, IN, Hendricks County, IN, Howard County, IN, Jasper County, IN, Lake County, IN, Madison County, IN, Marion County, IN, Miami County, IN, Montgomery County, IN, Newton County, IN, Parke County, IN, Porter County, IN, Pulaski County, IN, Putnam County, IN, Starke County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Warren County, IN, White County, IN

The radar

The Chicago radar (KLOT), 109 km from the middle of the area, began a volume at 22:51 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

Lincoln, IL (KILX), launched 12:00Z, 10.9 hours before the alert went out and 71 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, Lincoln, IL at 12:00Z on 2008-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 176 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, Lincoln, IL at 12:00Z on 2008-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 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
176 J/kg
Mixed-layer CIN
-131 J/kg
Mixed-layer LCL
842 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
-7 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
Jun 3, 9:26 PM CDTMesoscale DiscussionSPCBrown, Calhoun, Cass, Champaign, Christian, Coles and 24 more94 min
Jun 3, 11:34 PM CDTMesoscale DiscussionSPCCalhoun, Cass, Champaign, Christian, Clark, Coles and 33 more86 min
Jun 4, 1:29 AM CDTMesoscale DiscussionSPCAlexander, Clay, Clinton, Edwards, Franklin, Gallatin and 22 more91 min
Jun 4, 2:06 AM CDTTornado WatchSPCAlexander, Bond, Champaign, Christian, Clark, Clay and 46 more5 hr
Jun 4, 6:09 AM CDTMesoscale DiscussionSPCAlexander, Crawford, Gallatin, Hardin, Johnson, Lawrence and 7 more2 hr
Jun 4, 1:39 PM CDTMesoscale DiscussionSPCChampaign, Clark, Coles, Crawford, Cumberland, Douglas and 7 more96 min
Jun 3, 7:42 PM CDTTornado WatchSPCBartholomew, Boone, Brown, Carroll, Clay, Clinton and 40 more6 hr
Jun 3, 9:47 PM CDTMesoscale DiscussionSPCBartholomew, Boone, Brown, Dearborn, Decatur, Fayette and 13 more88 min
Jun 4, 2:00 AM CDTTornado WatchSPCBartholomew, Boone, Brown, Carroll, Clay, Clinton and 41 more6 hr
Jun 4, 8:18 AM CDTTornado WatchSPCDearborn, Ohio, Switzerland7 hr
Jun 4, 11:25 AM CDTMesoscale DiscussionSPCClark, Crawford, Dearborn, Floyd, Harrison, Jefferson and 4 more95 min
Jun 4, 3:36 PM CDTSevere Thunderstorm WatchSPCBartholomew, Boone, Brown, Dearborn, Decatur, Delaware and 23 more4 hr
Jun 4, 6:13 PM CDTMesoscale DiscussionSPCUnion62 min
Jun 4, 2:46 PM CDTTornado WatchSPCFremont, Mills, Montgomery, Page, Pottawattamie6 hr
Jun 4, 4:09 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Cass, Clarke, Decatur and 12 more66 min
Jun 4, 5:40 PM CDTTornado WatchSPCAdair, Adams, Appanoose, Audubon, Benton, Boone and 43 more6 hr
Jun 4, 6:47 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Boone, Carroll and 35 more58 min

Nearby

Mesoscale Discussions in Illinois, 2008Mesoscale Discussions in Indiana, 2008Mesoscale Discussions in Iowa, 2008Every mesoscale discussion in 2008

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.