Alert archive / Wisconsin / Mesoscale Discussions in 2004
Mesoscale Discussion 2121
The Storm Prediction Center issued this mesoscale discussion at Aug 26, 2004, 5:38 PM EDT for 5 counties in Michigan; Olmsted County, Wabasha County, Winona County, Minnesota; 29 counties in Wisconsin. It was in force for 97 min.
The area
The outline as issued.
The facts
- Issued
- Aug 26, 2004, 5:38 PM EDT (21:38 UTC)
- Expired
- Aug 26, 2004, 7:15 PM EDT
- In force
- 97 min
- Issued by
- the Storm Prediction Center
All 37 counties
Delta County, MI, Dickinson County, MI, Gogebic County, MI, Iron County, MI, Menominee County, MI, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Buffalo County, WI, Chippewa County, WI, Clark County, WI, Eau Claire County, WI, Florence County, WI, Forest County, WI, Jackson County, WI, Juneau County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Marinette County, WI, Menominee County, WI, Monroe County, WI, Oconto County, WI, Oneida County, WI, Outagamie County, WI, Pepin County, WI, Portage County, WI, Price County, WI, Shawano County, WI, Taylor County, WI, Trempealeau County, WI, Vilas County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI
The radar
The Green Bay radar (KGRB), 154 km from the middle of the area, began a volume at 21:41 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 nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.6 hours before the alert went out and 156 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
- 65 J/kg
- Mixed-layer CIN
- -197 J/kg
- Mixed-layer LCL
- 595 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 94 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 |
|---|---|---|---|---|
| Aug 26, 3:29 PM EDT | Mesoscale Discussion | SPC | Fillmore, Freeborn, Houston, Mower, Winona | 2 hr |
| Aug 26, 4:47 PM EDT | Mesoscale Discussion | SPC | Cook, Itasca, Koochiching, Lake, Saint Louis | 118 min |
| Aug 26, 5:10 PM EDT | Tornado Watch | SPC | Fillmore, Houston, Mower | 6 hr |
| Aug 26, 5:39 PM EDT | Mesoscale Discussion | SPC | Big Stone, Grant, Pope, Stevens, Swift, Traverse | 2 hr |
Nearby
Mesoscale Discussions in Wisconsin, 2004Mesoscale Discussions in Michigan, 2004Mesoscale Discussions in Minnesota, 2004Every mesoscale discussion in 2004
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.