Alert archive / Wisconsin / Mesoscale Discussions in 2015
Mesoscale Discussion 1583
The Storm Prediction Center issued this mesoscale discussion at Aug 2, 2015, 8:51 AM EDT for 19 counties in Michigan; 15 counties in Minnesota; 38 counties in Wisconsin. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 2, 2015, 8:51 AM EDT (12:51 UTC)
- Expired
- Aug 2, 2015, 11:15 AM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 72 counties
Antrim County, MI, Benzie County, MI, Charlevoix County, MI, Crawford County, MI, Delta County, MI, Dickinson County, MI, Emmet County, MI, Grand Traverse County, MI, Iron County, MI, Kalkaska County, MI, Leelanau County, MI, Manistee County, MI, Menominee County, MI, Missaukee County, MI, Montmorency County, MI, Oscoda County, MI, Otsego County, MI, Roscommon County, MI, Wexford County, MI, Anoka County, MN, Benton County, MN, Chisago County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Pine County, MN, Ramsey County, MN, Sherburne County, MN, Stearns County, MN, Washington County, MN, Wright County, MN, Barron County, WI, Brown County, WI, Burnett County, WI, Calumet County, WI, Chippewa County, WI, Clark County, WI, Door County, WI, Dunn County, WI, Eau Claire County, WI, Florence County, WI, Forest County, WI, Jackson County, WI, Kewaunee County, WI, Langlade County, WI, Lincoln County, WI, Manitowoc County, WI, Marathon County, WI, Marinette County, WI, Menominee County, WI, Oconto County, WI, Oneida County, WI, Outagamie County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Portage County, WI, Price County, WI, Rusk County, WI, Saint Croix County, WI, Sawyer County, WI, Shawano County, WI, Taylor County, WI, Vilas County, WI, Washburn County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI
The radar
The Green Bay radar (KGRB), 95 km from the middle of the area, began a volume at 12:52 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, 0.9 hours before the alert went out and 97 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
- 1667 J/kg
- Mixed-layer CIN
- -90 J/kg
- Mixed-layer LCL
- 1134 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 166 m²/s²
- 0-3 km storm-relative helicity
- 291 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 10.4
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 5:21 AM EDT | Mesoscale Discussion | SPC | Gogebic, Iron, Ontonagon | 2 hr |
| Aug 2, 9:51 AM EDT | Severe Thunderstorm Watch | SPC | Alcona, Alpena, Antrim, Arenac, Benzie, Charlevoix and 19 more | 7 hr |
| Aug 2, 12:49 PM EDT | Mesoscale Discussion | SPC | Crawford, Iosco, Missaukee, Montmorency, Ogemaw, Oscoda and 2 more | 56 min |
| Aug 2, 1:09 PM EDT | Mesoscale Discussion | SPC | Delta, Dickinson, Iron, Menominee | 2 hr |
| Aug 2, 2:56 PM EDT | Mesoscale Discussion | SPC | Clinton, Genesee, Ingham, Lapeer, Livingston, Macomb and 6 more | 64 min |
| Aug 2, 3:00 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Calhoun, Clinton, Eaton, Gratiot and 13 more | 2 hr |
| Aug 2, 3:59 PM EDT | Severe Thunderstorm Watch | SPC | Alcona, Allegan, Alpena, Antrim, Arenac, Barry and 35 more | 7 hr |
| Aug 2, 6:08 PM EDT | Mesoscale Discussion | SPC | Bay, Clinton, Genesee, Gladwin, Gratiot, Ingham and 15 more | 97 min |
| Aug 2, 6:27 PM EDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Bay, Calhoun, Clare, Clinton and 34 more | 6 hr |
| Aug 1, 9:53 PM EDT | Mesoscale Discussion | SPC | Kittson, Marshall, Pennington, Polk, Red Lake, Roseau | 2 hr |
| Aug 2, 2:08 AM EDT | Mesoscale Discussion | SPC | Cook, Koochiching, Lake, Saint Louis | 2 hr |
| Aug 2, 7:16 AM EDT | Mesoscale Discussion | SPC | Becker, Clay, Douglas, Hubbard, Mahnomen, Otter Tail and 2 more | 2 hr |
| Aug 2, 1:55 AM EDT | Mesoscale Discussion | SPC | Adams, Chippewa, Clark, Eau Claire, Green Lake, Jackson and 16 more | 3 hr |
Nearby
Mesoscale Discussions in Wisconsin, 2015Mesoscale Discussions in Michigan, 2015Mesoscale Discussions in Minnesota, 2015Every mesoscale discussion in 2015
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.