Alert archive / Illinois / Mesoscale Discussions in 2020

Mesoscale Discussion 1502

August 15, 202043 counties in Illinois; Lake County, Indiana; Kenosha County, Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Aug 15, 2020, 4:40 PM CDT for 43 counties in Illinois; Lake County, Indiana; Kenosha County, Wisconsin. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued: Aug 15, 2020, 4:40 PM CDT (21:40 UTC)
Expired: Aug 15, 2020, 6:15 PM CDT
In force: 95 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch unlikely
Chance of a watch: 20%

All 45 counties

Bond County, IL, Calhoun County, IL, Cass County, IL, Champaign County, IL, Christian County, IL, Coles County, IL, Cook County, IL, DeKalb County, IL, DeWitt County, IL, Douglas County, IL, DuPage County, IL, Effingham County, IL, Fayette County, IL, Ford County, IL, Greene County, IL, Grundy County, IL, Iroquois County, IL, Jersey County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marshall County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Piatt County, IL, Putnam County, IL, Sangamon County, IL, Scott County, IL, Shelby County, IL, Tazewell County, IL, Will County, IL, Woodford County, IL, Lake County, IN, Kenosha County, WI

The radar

The Lincoln radar (KILX), 70 km from the middle of the area, began a volume at 21:44 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.

Issued	Product	Office	Counties	Lasted
Aug 15, 2:00 PM CDT	Mesoscale Discussion	SPC	Monroe, Randolph	2 hr
Aug 14, 7:28 PM CDT	Mesoscale Discussion	SPC	Burnett, Douglas, Polk, Saint Croix	92 min
Aug 14, 10:21 PM CDT	Mesoscale Discussion	SPC	Buffalo, Chippewa, Eau Claire, Pepin, Rusk	54 min

Nearby

Mesoscale Discussions in Illinois, 2020 Mesoscale Discussions in Indiana, 2020 Mesoscale Discussions in Wisconsin, 2020 Every mesoscale discussion in 2020

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.