Alert archive / Wisconsin / Mesoscale Discussions in 2015
Mesoscale Discussion 1580
The Storm Prediction Center issued this mesoscale discussion at Aug 2, 2015, 4:21 AM CDT for Gogebic County, Iron County, Ontonagon County, Michigan; 17 counties in Minnesota; 46 counties in Wisconsin. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 2, 2015, 4:21 AM CDT (09:21 UTC)
- Expired
- Aug 2, 2015, 6:45 AM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 66 counties
Gogebic County, MI, Iron County, MI, Ontonagon County, MI, Anoka County, MN, Benton County, MN, Carlton County, MN, Chisago County, MN, Dakota County, MN, Goodhue County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs County, MN, Morrison County, MN, Pine County, MN, Ramsey County, MN, Sherburne County, MN, Wabasha County, MN, Washington County, MN, Wright County, MN, Adams County, WI, Ashland County, WI, Barron County, WI, Bayfield County, WI, Buffalo County, WI, Burnett County, WI, Chippewa County, WI, Clark County, WI, Douglas County, WI, Dunn County, WI, Eau Claire County, WI, Florence County, WI, Fond du Lac County, WI, Forest County, WI, Green Lake County, WI, Iron County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Marinette County, WI, Marquette County, WI, Menominee County, WI, Monroe 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, Trempealeau County, WI, Vilas County, WI, Washburn County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI
The radar
The Duluth radar (KDLH), 162 km from the middle of the area, began a volume at 09:24 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
Minneapolis, MN (KMPX), launched 00:00Z, 9.4 hours before the alert went out and 180 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
- 1730 J/kg
- Mixed-layer CIN
- -124 J/kg
- Mixed-layer LCL
- 1483 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 218 m²/s²
- 0-3 km storm-relative helicity
- 333 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 14.0
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, 7:51 AM CDT | Mesoscale Discussion | SPC | Antrim, Benzie, Charlevoix, Crawford, Delta, Dickinson and 13 more | 2 hr |
| Aug 2, 8:51 AM CDT | Severe Thunderstorm Watch | SPC | Alcona, Alpena, Antrim, Arenac, Benzie, Charlevoix and 19 more | 7 hr |
| Aug 2, 11:49 AM CDT | Mesoscale Discussion | SPC | Crawford, Iosco, Missaukee, Montmorency, Ogemaw, Oscoda and 2 more | 56 min |
| Aug 2, 12:09 PM CDT | Mesoscale Discussion | SPC | Delta, Dickinson, Iron, Menominee | 2 hr |
| Aug 2, 1:56 PM CDT | Mesoscale Discussion | SPC | Clinton, Genesee, Ingham, Lapeer, Livingston, Macomb and 6 more | 64 min |
| Aug 2, 2:00 PM CDT | Mesoscale Discussion | SPC | Allegan, Barry, Calhoun, Clinton, Eaton, Gratiot and 13 more | 2 hr |
| Aug 2, 2:59 PM CDT | Severe Thunderstorm Watch | SPC | Alcona, Allegan, Alpena, Antrim, Arenac, Barry and 35 more | 7 hr |
| Aug 2, 5:08 PM CDT | Mesoscale Discussion | SPC | Bay, Clinton, Genesee, Gladwin, Gratiot, Ingham and 15 more | 97 min |
| Aug 2, 5:27 PM CDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Bay, Calhoun, Clare, Clinton and 34 more | 6 hr |
| Aug 1, 8:53 PM CDT | Mesoscale Discussion | SPC | Kittson, Marshall, Pennington, Polk, Red Lake, Roseau | 2 hr |
| Aug 2, 1:08 AM CDT | Mesoscale Discussion | SPC | Cook, Koochiching, Lake, Saint Louis | 2 hr |
| Aug 2, 6:16 AM CDT | Mesoscale Discussion | SPC | Becker, Clay, Douglas, Hubbard, Mahnomen, Otter Tail and 2 more | 2 hr |
| Aug 2, 12:55 AM CDT | Mesoscale Discussion | SPC | Adams, Chippewa, Clark, Eau Claire, Green Lake, Jackson and 16 more | 3 hr |
Nearby
Mesoscale Discussions in Wisconsin, 2015Mesoscale Discussions in Minnesota, 2015Mesoscale Discussions in Michigan, 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.