Alert archive / Illinois / Mesoscale Discussions in 2019

Mesoscale Discussion 1809

August 20, 20194 states

The Storm Prediction Center issued this mesoscale discussion at Aug 20, 2019, 9:04 AM CDT for 4 states. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued
Aug 20, 2019, 9:04 AM CDT (14:04 UTC)
Expired
Aug 20, 2019, 10:30 AM CDT
In force
86 min
Issued by
the Storm Prediction Center
All 147 counties

Clinton County, IA, Des Moines County, IA, Henry County, IA, Lee County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Van Buren County, IA, Adams County, IL, Bond County, IL, Brown County, IL, Bureau County, IL, Calhoun County, IL, Carroll County, IL, Cass County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, DeKalb County, IL, DeWitt County, IL, Douglas County, IL, DuPage County, IL, Edgar County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Ford County, IL, Franklin County, IL, Fulton County, IL, Greene County, IL, Grundy County, IL, Hamilton County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Iroquois County, IL, Jasper County, IL, Jefferson County, IL, Jersey County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Knox County, IL, LaSalle County, IL, Lawrence County, IL, Lee County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Marshall County, IL, Mason County, IL, McDonough County, IL, McLean County, IL, Menard County, IL, Mercer County, IL, Monroe County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Ogle County, IL, Peoria County, IL, Perry County, IL, Piatt County, IL, Pike County, IL, Putnam County, IL, Randolph County, IL, Richland County, IL, Rock Island County, IL, Saint Clair County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Stark County, IL, Tazewell County, IL, Vermilion County, IL, Wabash County, IL, Warren County, IL, Washington County, IL, Wayne County, IL, White County, IL, Whiteside County, IL, Will County, IL, Woodford County, IL, Benton County, IN, Boone County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, Daviess County, IN, Fountain County, IN, Gibson County, IN, Greene County, IN, Hendricks County, IN, Jasper County, IN, Knox County, IN, Lake County, IN, Martin County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Newton County, IN, Owen County, IN, Parke County, IN, Pike County, IN, Porter County, IN, Posey County, IN, Pulaski County, IN, Putnam County, IN, Sullivan County, IN, Tippecanoe County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN, White County, IN, Adair County, MO, Audrain County, MO, City of Saint Louis, MO, Clark County, MO, Grundy County, MO, Knox County, MO, Lewis County, MO, Lincoln County, MO, Linn County, MO, Macon County, MO, Marion County, MO, Mercer County, MO, Monroe County, MO, Pike County, MO, Putnam County, MO, Ralls County, MO, Randolph County, MO, Saint Charles County, MO, Saint Louis County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, Sullivan County, MO

The radar

The Lincoln radar (KILX), 90 km from the middle of the area, began a volume at 14:06 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 text

As transmitted.

<!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 19, 7:07 PM CDTMesoscale DiscussionSPCBond, Clark, Clay, Clinton, Coles, Crawford and 21 more83 min
Aug 20, 5:43 AM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Carroll, Cass, DeKalb and 27 more92 min
Aug 20, 6:18 AM CDTSevere Thunderstorm WatchSPCAdams, Bond, Brown, Bureau, Calhoun, Carroll and 69 more11 hr
Aug 20, 12:12 PM CDTMesoscale DiscussionSPCClark, Clay, Clinton, Crawford, Cumberland, Edgar and 17 more2 hr
Aug 20, 1:53 PM CDTSevere Thunderstorm WatchSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more5 hr
Aug 20, 1:07 PM CDTSevere Thunderstorm WatchSPCBartholomew, Boone, Brown, Carroll, Clay, Clinton and 26 more3 hr
Aug 20, 2:35 PM CDTSevere Thunderstorm WatchSPCDearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more2 hr
Aug 19, 11:05 PM CDTMesoscale DiscussionSPCAudubon, Buena Vista, Calhoun, Carroll, Cherokee, Clay and 21 more115 min
Aug 19, 11:56 PM CDTSevere Thunderstorm WatchSPCAdair, Adams, Appanoose, Audubon, Boone, Buena Vista and 55 more8 hr
Aug 20, 3:08 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Boone, Buena Vista and 55 more97 min
Aug 20, 4:01 PM CDTMesoscale DiscussionSPCDunklin, Pemiscot89 min

Nearby

Mesoscale Discussions in Illinois, 2019Mesoscale Discussions in Indiana, 2019Mesoscale Discussions in Missouri, 2019Every mesoscale discussion in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.