Alert archive / Wisconsin / Mesoscale Discussions in 2018
Mesoscale Discussion 1380
The Storm Prediction Center issued this mesoscale discussion at Aug 28, 2018, 4:24 PM EDT for 13 counties in Michigan; 21 counties in Wisconsin. It was in force for 96 min.
The area
The outline as issued.
The facts
- Issued
- Aug 28, 2018, 4:24 PM EDT (20:24 UTC)
- Expired
- Aug 28, 2018, 6:00 PM EDT
- In force
- 96 min
- Issued by
- the Storm Prediction Center
All 34 counties
Benzie County, MI, Lake County, MI, Manistee County, MI, Mason County, MI, Mecosta County, MI, Missaukee County, MI, Montcalm County, MI, Muskegon County, MI, Newaygo County, MI, Oceana County, MI, Osceola County, MI, Ottawa County, MI, Wexford County, MI, Adams County, WI, Brown County, WI, Calumet County, WI, Columbia County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Green Lake County, WI, Jefferson County, WI, Manitowoc County, WI, Marquette County, WI, Milwaukee County, WI, Outagamie County, WI, Ozaukee County, WI, Racine County, WI, Sauk County, WI, Sheboygan County, WI, Washington County, WI, Waukesha County, WI, Waushara County, WI, Winnebago County, WI
The radar
The Milwaukee radar (KMKX), 98 km from the middle of the area, began a volume at 20:25 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 12:00Z, 8.4 hours before the alert went out and 104 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
- 41 J/kg
- Mixed-layer CIN
- -407 J/kg
- Mixed-layer LCL
- 1253 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 152 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 11:34 PM EDT | Mesoscale Discussion | SPC | Antrim, Benzie, Charlevoix, Cheboygan, Crawford, Emmet and 12 more | 116 min |
| Aug 28, 6:23 PM EDT | Severe Thunderstorm Watch | SPC | Alcona, Allegan, Alpena, Antrim, Arenac, Barry and 43 more | 7 hr |
| Aug 28, 1:14 PM EDT | Mesoscale Discussion | SPC | Adams, Calumet, Columbia, Crawford, Dane, Dodge and 18 more | 2 hr |
| Aug 28, 2:14 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calumet, Columbia, Crawford, Dane and 31 more | 8 hr |
Nearby
Mesoscale Discussions in Wisconsin, 2018Mesoscale Discussions in Michigan, 2018Every mesoscale discussion in 2018
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.