Alert archive / Michigan / Mesoscale Discussions in 2008
Mesoscale Discussion 737
The Storm Prediction Center issued this mesoscale discussion at Apr 25, 2008, 7:43 PM EDT for 15 counties in Michigan; 7 counties in Wisconsin. It was in force for 92 min.
The area
The outline as issued.
The facts
- Issued
- Apr 25, 2008, 7:43 PM EDT (23:43 UTC)
- Expired
- Apr 25, 2008, 9:15 PM EDT
- In force
- 92 min
- Issued by
- the Storm Prediction Center
All 22 counties
Antrim County, MI, Benzie County, MI, Cheboygan County, MI, Crawford County, MI, Grand Traverse County, MI, Kalkaska County, MI, Lake County, MI, Leelanau County, MI, Manistee County, MI, Mason County, MI, Missaukee County, MI, Montmorency County, MI, Otsego County, MI, Roscommon County, MI, Wexford County, MI, Brown County, WI, Calumet County, WI, Door County, WI, Kewaunee County, WI, Manitowoc County, WI, Oconto County, WI, Outagamie County, WI
The radar
The NCL Michigan radar (KAPX), 122 km from the middle of the area, began a volume at 23:44 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, 11.7 hours before the alert went out and 149 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
- 806 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 99 m²/s²
- 0-3 km storm-relative helicity
- 240 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 |
|---|---|---|---|---|
| Apr 25, 10:10 AM EDT | Mesoscale Discussion | SPC | Columbia, Dane, Dodge, Fond du Lac, Green, Green Lake and 9 more | 65 min |
| Apr 25, 3:10 PM EDT | Mesoscale Discussion | SPC | Adams, Buffalo, Chippewa, Clark, Columbia, Crawford and 29 more | 65 min |
| Apr 25, 3:41 PM EDT | Tornado Watch | SPC | Adams, Columbia, Crawford, Dane, Dodge, Fond du Lac and 26 more | 5 hr |
Nearby
Mesoscale Discussions in Michigan, 2008Mesoscale Discussions in Wisconsin, 2008Every mesoscale discussion in 2008
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.