Alert archive / Wisconsin / Mesoscale Discussions in 2012
Mesoscale Discussion 1393
The Storm Prediction Center issued this mesoscale discussion at Jul 4, 2012, 6:36 PM EDT for 10 counties in Michigan; 13 counties in Wisconsin. It was in force for 54 min.
The area
The outline as issued.
The facts
- Issued
- Jul 4, 2012, 6:36 PM EDT (22:36 UTC)
- Expired
- Jul 4, 2012, 7:30 PM EDT
- In force
- 54 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 23 counties
Alger County, MI, Baraga County, MI, Delta County, MI, Dickinson County, MI, Iron County, MI, Luce County, MI, Mackinac County, MI, Marquette County, MI, Menominee County, MI, Schoolcraft County, MI, Brown County, WI, Door County, WI, Florence County, WI, Forest County, WI, Kewaunee County, WI, Langlade County, WI, Marinette County, WI, Menominee County, WI, Oconto County, WI, Oneida County, WI, Outagamie County, WI, Shawano County, WI, Vilas County, WI
The radar
The Marquette radar (KMQT), 89 km from the middle of the area, began a volume at 22:37 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
Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.6 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.
- Mixed-layer CAPE
- 3032 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 1071 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 117 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.1
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 |
|---|---|---|---|---|
| Jul 4, 3:59 PM EDT | Mesoscale Discussion | SPC | Arenac, Bay, Clare, Genesee, Gladwin, Gratiot and 22 more | 91 min |
| Jul 4, 4:42 PM EDT | Severe Thunderstorm Watch | SPC | Bay, Clare, Clinton, Genesee, Gratiot, Ingham and 19 more | 5 hr |
| Jul 4, 4:57 PM EDT | Mesoscale Discussion | SPC | Baraga, Gogebic, Houghton, Iron, Keweenaw, Ontonagon | 93 min |
| Jul 4, 7:08 PM EDT | Mesoscale Discussion | SPC | Monroe, Wayne | 2 hr |
| Jul 4, 7:53 AM EDT | Mesoscale Discussion | SPC | Adams, Buffalo, Chippewa, Clark, Dunn, Eau Claire and 9 more | 97 min |
| Jul 4, 1:34 PM EDT | Severe Thunderstorm Watch | SPC | Ashland, Bayfield, Burnett, Douglas, Sawyer, Washburn | 7 hr |
Nearby
Mesoscale Discussions in Wisconsin, 2012Mesoscale Discussions in Michigan, 2012Every mesoscale discussion in 2012
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.