Alert archive / Wisconsin / Mesoscale Discussions in 2012
Mesoscale Discussion 1368
The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2012, 7:23 PM CDT for 5 counties in Illinois; 24 counties in Wisconsin. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 2, 2012, 7:23 PM CDT (00:23 UTC)
- Expired
- Jul 2, 2012, 9:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 29 counties
Boone County, IL, DuPage County, IL, Kane County, IL, McHenry County, IL, Winnebago County, IL, Brown County, WI, Calumet County, WI, Columbia County, WI, Dane County, WI, Dodge County, WI, Florence County, WI, Fond du Lac County, WI, Forest County, WI, Green Lake County, WI, Jefferson County, WI, Langlade County, WI, Marquette County, WI, Menominee County, WI, Oconto County, WI, Outagamie County, WI, Portage County, WI, Rock County, WI, Shawano County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI
The radar
The Milwaukee radar (KMKX), 91 km from the middle of the area, began a volume at 00:25 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 00:00Z, 0.4 hours before the alert went out and 93 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
- 3426 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 1137 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- -2 m²/s²
- Significant tornado parameter
- -0.2
- Supercell composite
- -1.1
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 2, 9:17 PM CDT | Mesoscale Discussion | SPC | Ashland, Bayfield, Burnett, Douglas, Florence, Forest and 11 more | 118 min |
| Jul 2, 10:13 PM CDT | Severe Thunderstorm Watch | SPC | Florence, Forest, Langlade, Lincoln, Marinette, Oconto and 2 more | 4 hr |
| Jul 2, 11:17 PM CDT | Mesoscale Discussion | SPC | Ashland, Bayfield, Douglas, Florence, Forest, Iron and 8 more | 88 min |
| Jul 3, 2:00 AM CDT | Mesoscale Discussion | SPC | Barron, Burnett, Chippewa, Clark, Dunn, Eau Claire and 8 more | 90 min |
Nearby
Mesoscale Discussions in Wisconsin, 2012Mesoscale Discussions in Illinois, 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.