Alert archive / Wisconsin / Mesoscale Discussions in 2011
Mesoscale Discussion 1108
The Storm Prediction Center issued this mesoscale discussion at Jun 6, 2011, 6:15 AM CDT for 10 counties in Illinois; 14 counties in Wisconsin. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Jun 6, 2011, 6:15 AM CDT (11:15 UTC)
- Expired
- Jun 6, 2011, 7:45 AM CDT
- In force
- 90 min
- Issued by
- the Storm Prediction Center
All 24 counties
Boone County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Kane County, IL, Kendall County, IL, Lake County, IL, McHenry County, IL, Ogle County, IL, Winnebago County, IL, Adams County, WI, Columbia County, WI, Dane County, WI, Dodge County, WI, Green County, WI, Jefferson County, WI, Juneau County, WI, Kenosha County, WI, Marquette County, WI, Monroe County, WI, Rock County, WI, Sauk County, WI, Walworth County, WI, Waukesha County, WI
The radar
The Milwaukee radar (KMKX), 47 km from the middle of the area, began a volume at 11:17 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, 11.3 hours before the alert went out and 189 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1924 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 237 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Jun 6, 1:08 AM CDT | Mesoscale Discussion | SPC | Jo Daviess | 2 hr |
| Jun 6, 7:00 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Lake, McHenry | 5 hr |
| Jun 6, 2:09 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Buffalo, Chippewa, Clark, Columbia, Crawford and 17 more | 8 hr |
| Jun 6, 10:12 AM CDT | Mesoscale Discussion | SPC | Brown, Calumet, Dodge, Fond du Lac, Green Lake, Marathon and 11 more | 93 min |
| Jun 6, 2:02 PM CDT | Mesoscale Discussion | SPC | Door, Florence, Forest, Marinette, Oneida, Vilas | 118 min |
Nearby
Mesoscale Discussions in Wisconsin, 2011Mesoscale Discussions in Illinois, 2011Every mesoscale discussion in 2011
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.