Alert archive / Michigan / Mesoscale Discussions in 2005

Mesoscale Discussion 1772

July 18, 20054 states

The Storm Prediction Center issued this mesoscale discussion at Jul 18, 2005, 1:17 PM CDT for 4 states. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued: Jul 18, 2005, 1:17 PM CDT (18:17 UTC)
Expired: Jul 18, 2005, 3:15 PM CDT
In force: 118 min
Issued by: the Storm Prediction Center

All 108 counties

Champaign County, IL, Iroquois County, IL, Vermilion County, IL, Adams County, IN, Allen County, IN, Benton County, IN, Blackford County, IN, Boone County, IN, Carroll County, IN, Cass County, IN, Clinton County, IN, DeKalb County, IN, Delaware County, IN, Elkhart County, IN, Fountain County, IN, Fulton County, IN, Grant County, IN, Hamilton County, IN, Howard County, IN, Huntington County, IN, Jasper County, IN, Jay County, IN, Kosciusko County, IN, LaGrange County, IN, LaPorte County, IN, Madison County, IN, Marshall County, IN, Miami County, IN, Montgomery County, IN, Newton County, IN, Noble County, IN, Porter County, IN, Pulaski County, IN, Randolph County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Tippecanoe County, IN, Tipton County, IN, Wabash County, IN, Warren County, IN, Wells County, IN, White County, IN, Whitley County, IN, Alcona County, MI, Allegan County, MI, Alpena County, MI, Arenac County, MI, Barry County, MI, Bay County, MI, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Cheboygan County, MI, Clare County, MI, Clinton County, MI, Crawford County, MI, Eaton County, MI, Genesee County, MI, Gladwin County, MI, Gratiot County, MI, Hillsdale County, MI, Huron County, MI, Ingham County, MI, Ionia County, MI, Iosco County, MI, Isabella County, MI, Jackson County, MI, Kalamazoo County, MI, Kalkaska County, MI, Kent County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Mecosta County, MI, Midland County, MI, Missaukee County, MI, Monroe County, MI, Montcalm County, MI, Montmorency County, MI, Newaygo County, MI, Oakland County, MI, Ogemaw County, MI, Osceola County, MI, Oscoda County, MI, Otsego County, MI, Presque Isle County, MI, Roscommon County, MI, Saginaw County, MI, Saint Clair County, MI, Saint Joseph County, MI, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI, Van Buren County, MI, Washtenaw County, MI, Wayne County, MI, Defiance County, OH, Fulton County, OH, Henry County, OH, Lucas County, OH, Mercer County, OH, Paulding County, OH, Putnam County, OH, Van Wert County, OH, Williams County, OH

The radar

The Grand Rapids radar (KGRR), 67 km from the middle of the area, began a volume at 18:19 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

Detroit, MI (KDTX), launched 12:00Z, 6.3 hours before the alert went out and 145 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1397 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 954 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 12 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.

Issued	Product	Office	Counties	Lasted
Jul 18, 11:29 AM CDT	Mesoscale Discussion	SPC	Champaign, Coles, DeWitt, Douglas, Edgar, Ford and 11 more	2 hr
Jul 18, 12:10 PM CDT	Severe Thunderstorm Watch	SPC	Champaign, Iroquois, Vermilion	7 hr
Jul 18, 3:24 PM CDT	Mesoscale Discussion	SPC	Champaign, Iroquois, Vermilion	2 hr
Jul 18, 5:36 PM CDT	Mesoscale Discussion	SPC	Clark, Clay, Crawford, Effingham, Jasper, Lawrence and 3 more	54 min
Jul 18, 9:34 AM CDT	Mesoscale Discussion	SPC	Alcona, Allegan, Alpena, Antrim, Arenac, Barry and 55 more	116 min
Jul 18, 10:10 AM CDT	Severe Thunderstorm Watch	SPC	Alcona, Allegan, Alpena, Arenac, Barry, Bay and 48 more	8 hr

Nearby

Mesoscale Discussions in Michigan, 2005 Mesoscale Discussions in Indiana, 2005 Mesoscale Discussions in Ohio, 2005 Every mesoscale discussion in 2005

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.