Alert archive / Iowa / Mesoscale Discussions in 2009

Mesoscale Discussion 767

May 8, 200915 counties in Illinois; 35 counties in Iowa; 5 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at May 8, 2009, 5:47 PM CDT for 15 counties in Illinois; 35 counties in Iowa; 5 counties in Wisconsin. It was in force for 58 min.

The area

The outline as issued.

The facts

Issued: May 8, 2009, 5:47 PM CDT (22:47 UTC)
Expired: May 8, 2009, 6:45 PM CDT
In force: 58 min
Issued by: the Storm Prediction Center

All 55 counties

Appanoose County, IA, Benton County, IA, Black Hawk County, IA, Buchanan County, IA, Cedar County, IA, Clayton County, IA, Clinton County, IA, Davis County, IA, Delaware County, IA, Des Moines County, IA, Dubuque County, IA, Grundy County, IA, Henry County, IA, Iowa County, IA, Jackson County, IA, Jasper County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Linn County, IA, Louisa County, IA, Lucas County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Monroe County, IA, Muscatine County, IA, Poweshiek County, IA, Scott County, IA, Tama County, IA, Van Buren County, IA, Wapello County, IA, Washington County, IA, Wayne County, IA, Boone County, IL, Bureau County, IL, Carroll County, IL, Henderson County, IL, Henry County, IL, Jo Daviess County, IL, Lee County, IL, Mercer County, IL, Ogle County, IL, Rock Island County, IL, Stark County, IL, Stephenson County, IL, Warren County, IL, Whiteside County, IL, Winnebago County, IL, Grant County, WI, Green County, WI, Iowa County, WI, Lafayette County, WI, Rock County, WI

The radar

The Quad Cities radar (KDVN), 75 km from the middle of the area, began a volume at 22:48 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.

Severe Thunderstorm Watch 275May 8, 6:10 PM CDT

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.

Issued	Product	Office	Counties	Lasted
May 7, 9:38 PM CDT	Mesoscale Discussion	SPC	Clinton, Franklin, Gallatin, Hamilton, Jackson, Jefferson and 13 more	97 min
May 7, 10:17 PM CDT	Severe Thunderstorm Watch	SPC	Alexander, Franklin, Gallatin, Hardin, Jackson, Johnson and 9 more	8 hr
May 7, 11:46 PM CDT	Mesoscale Discussion	SPC	Alexander, Bond, Clark, Clay, Clinton, Coles and 33 more	89 min
May 8, 3:34 AM CDT	Mesoscale Discussion	SPC	Alexander, Massac, Pulaski	56 min
May 8, 8:37 AM CDT	Mesoscale Discussion	SPC	Alexander, Massac, Pulaski	53 min
May 8, 9:21 AM CDT	Tornado Watch	SPC	Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more	7 hr
May 8, 2:16 PM CDT	Mesoscale Discussion	SPC	Edwards, Franklin, Gallatin, Hamilton, Jefferson, Saline and 3 more	89 min
May 8, 6:10 PM CDT	Severe Thunderstorm Watch	SPC	Bureau, Carroll, Henderson, Henry, Jo Daviess, Knox and 13 more	4 hr
May 8, 1:05 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Appanoose, Audubon, Benton, Black Hawk and 54 more	85 min
May 8, 1:21 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 44 more	6 hr

Nearby

Mesoscale Discussions in Iowa, 2009 Mesoscale Discussions in Illinois, 2009 Mesoscale Discussions in Wisconsin, 2009 Every mesoscale discussion in 2009

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.