Alert archive / Michigan / Mesoscale Discussions in 2011
Mesoscale Discussion 2095
The Storm Prediction Center issued this mesoscale discussion at Sep 2, 2011, 11:08 AM EDT for 12 counties in Michigan; 9 counties in Wisconsin. It was in force for 97 min.
The area
The outline as issued.
The facts
- Issued
- Sep 2, 2011, 11:08 AM EDT (15:08 UTC)
- Expired
- Sep 2, 2011, 12:45 PM EDT
- In force
- 97 min
- Issued by
- the Storm Prediction Center
All 21 counties
Antrim County, MI, Benzie County, MI, Grand Traverse County, MI, Kalkaska County, MI, Lake County, MI, Leelanau County, MI, Manistee County, MI, Mason County, MI, Missaukee County, MI, Oceana County, MI, Osceola County, MI, Wexford County, MI, Brown County, WI, Calumet County, WI, Door County, WI, Fond du Lac County, WI, Kewaunee County, WI, Manitowoc County, WI, Outagamie County, WI, Sheboygan County, WI, Winnebago County, WI
The radar
The Green Bay radar (KGRB), 95 km from the middle of the area, began a volume at 15:08 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, 3.1 hours before the alert went out and 94 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
- 2366 J/kg
- Mixed-layer CIN
- -254 J/kg
- Mixed-layer LCL
- 999 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 21 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 |
|---|---|---|---|---|
| Sep 2, 12:09 PM EDT | Severe Thunderstorm Watch | SPC | Alcona, Alpena, Antrim, Arenac, Benzie, Charlevoix and 18 more | 3 hr |
| Sep 1, 9:57 PM EDT | Mesoscale Discussion | SPC | Burnett, Douglas | 93 min |
| Sep 2, 4:48 AM EDT | Severe Thunderstorm Watch | SPC | Adams, Buffalo, Crawford, Grant, Jackson, Juneau and 5 more | 6 hr |
| Sep 2, 8:29 AM EDT | Mesoscale Discussion | SPC | Adams, Calumet, Columbia, Dodge, Fond du Lac, Green Lake and 10 more | 61 min |
| Sep 2, 8:50 AM EDT | Severe Thunderstorm Watch | SPC | Brown, Calumet, Columbia, Dodge, Door, Fond du Lac and 16 more | 3 hr |
| Sep 2, 3:41 PM EDT | Mesoscale Discussion | SPC | Crawford, Dane, Grant, Green, Iowa, Jefferson and 5 more | 94 min |
Nearby
Mesoscale Discussions in Michigan, 2011Mesoscale Discussions in Wisconsin, 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.