Alert archive / Michigan / Mesoscale Discussions in 2016
Mesoscale Discussion 1346
The Storm Prediction Center issued this mesoscale discussion at Jul 21, 2016, 9:28 AM EDT for 48 counties in Michigan; 22 counties in Wisconsin. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 21, 2016, 9:28 AM EDT (13:28 UTC)
- Expired
- Jul 21, 2016, 11:30 AM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 70 counties
Alcona County, MI, Alpena County, MI, Antrim County, MI, Arenac County, MI, Bay County, MI, Benzie County, MI, Charlevoix County, MI, Cheboygan County, MI, Chippewa County, MI, Clare County, MI, Clinton County, MI, Crawford County, MI, Emmet County, MI, Genesee County, MI, Gladwin County, MI, Grand Traverse County, MI, Gratiot County, MI, Ionia County, MI, Iosco County, MI, Isabella County, MI, Kalkaska County, MI, Kent County, MI, Lake County, MI, Leelanau County, MI, Luce County, MI, Mackinac County, MI, Manistee County, MI, Mason County, MI, Mecosta County, MI, Midland County, MI, Missaukee County, MI, Montcalm County, MI, Montmorency County, MI, Muskegon County, MI, Newaygo County, MI, Oceana County, MI, Ogemaw County, MI, Osceola County, MI, Oscoda County, MI, Otsego County, MI, Ottawa County, MI, Presque Isle County, MI, Roscommon County, MI, Saginaw County, MI, Schoolcraft County, MI, Shiawassee County, MI, Tuscola County, MI, Wexford County, MI, Calumet County, WI, Columbia County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Green County, WI, Green Lake County, WI, Jefferson County, WI, Kenosha County, WI, Kewaunee County, WI, Manitowoc County, WI, Marquette County, WI, Milwaukee County, WI, Ozaukee County, WI, Racine County, WI, Rock County, WI, Sauk County, WI, Sheboygan County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI, Winnebago County, WI
The radar
The Green Bay radar (KGRB), 136 km from the middle of the area, began a volume at 13:30 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
Green Bay/Straub, WI (KGRB), launched 12:00Z, 1.5 hours before the alert went out and 135 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.
- Mixed-layer CAPE
- 1904 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 686 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 152 m²/s²
- 0-3 km storm-relative helicity
- 154 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Jul 21, 4:54 AM EDT | Mesoscale Discussion | SPC | Baraga, Dickinson, Gogebic, Houghton, Iron, Keweenaw and 2 more | 2 hr |
| Jul 21, 5:31 AM EDT | Severe Thunderstorm Watch | SPC | Alger, Baraga, Delta, Dickinson, Gogebic, Houghton and 7 more | 6 hr |
| Jul 21, 7:39 AM EDT | Mesoscale Discussion | SPC | Alger, Baraga, Delta, Dickinson, Houghton, Iron and 3 more | 2 hr |
| Jul 21, 9:45 AM EDT | Severe Thunderstorm Watch | SPC | Alcona, Alpena, Antrim, Arenac, Bay, Benzie and 43 more | 7 hr |
| Jul 21, 12:19 PM EDT | Mesoscale Discussion | SPC | Alcona, Alpena, Arenac, Bay, Cheboygan, Clare and 30 more | 116 min |
| Jul 21, 2:23 PM EDT | Mesoscale Discussion | SPC | Branch, Calhoun, Cass, Hillsdale, Jackson, Lenawee and 5 more | 2 hr |
| Jul 21, 1:32 AM EDT | Severe Thunderstorm Watch | SPC | Ashland, Barron, Bayfield, Burnett, Chippewa, Douglas and 8 more | 6 hr |
| Jul 21, 3:30 AM EDT | Mesoscale Discussion | SPC | Bayfield, Burnett, Douglas, Washburn | 2 hr |
| Jul 21, 4:20 PM EDT | Mesoscale Discussion | SPC | Adams, Buffalo, Columbia, Eau Claire, Iowa, Jackson and 9 more | 115 min |
| Jul 21, 5:26 PM EDT | Severe Thunderstorm Watch | SPC | Columbia, Dane, Dodge, Fond du Lac, Green, Green Lake and 13 more | 5 hr |
| Jul 21, 6:42 PM EDT | Mesoscale Discussion | SPC | Columbia, Dane, Dodge, Fond du Lac, Green, Green Lake and 12 more | 93 min |
Nearby
Mesoscale Discussions in Michigan, 2016Mesoscale Discussions in Wisconsin, 2016Every mesoscale discussion in 2016
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.