Alert archive / Wisconsin / Mesoscale Discussions in 2004
Mesoscale Discussion 626
The Storm Prediction Center issued this mesoscale discussion at May 9, 2004, 8:09 PM CDT for 4 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 9, 2004, 8:09 PM CDT (01:09 UTC)
- Expired
- May 9, 2004, 10:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 65 counties
Dickinson County, IA, Emmet County, IA, Howard County, IA, Lyon County, IA, Mitchell County, IA, Osceola County, IA, Winnebago County, IA, Worth County, IA, Gogebic County, MI, Blue Earth County, MN, Brown County, MN, Cottonwood County, MN, Dodge County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Houston County, MN, Jackson County, MN, Le Sueur County, MN, Martin County, MN, Mower County, MN, Nobles County, MN, Olmsted County, MN, Rice County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Watonwan County, MN, Winona County, MN, Adams County, WI, Ashland County, WI, Buffalo County, WI, Chippewa County, WI, Clark County, WI, Columbia County, WI, Eau Claire County, WI, Forest County, WI, Green Lake County, WI, Iron County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Marquette County, WI, Menominee County, WI, Monroe County, WI, Oconto County, WI, Oneida County, WI, Outagamie County, WI, Portage County, WI, Price County, WI, Rusk County, WI, Sawyer County, WI, Shawano County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI, Vilas County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 1.2 hours before the alert went out and 351 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
- 903 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 1798 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- -3 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 |
|---|---|---|---|---|
| May 9, 7:55 PM CDT | Severe Thunderstorm Watch | SPC | Cherokee, Dickinson, Lyon, O'Brien, Osceola, Plymouth and 2 more | 4 hr |
| May 10, 11:05 AM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Dubuque, Jackson, Jones, Louisa and 2 more | 115 min |
| May 9, 9:04 PM CDT | Mesoscale Discussion | SPC | Branch, Hillsdale, Lenawee, Monroe | 56 min |
| May 10, 6:05 PM CDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 24 more | 115 min |
| May 9, 7:20 PM CDT | Severe Thunderstorm Watch | SPC | Anoka, Blue Earth, Brown, Carver, Cottonwood, Dakota and 27 more | 7 hr |
| May 9, 10:21 PM CDT | Mesoscale Discussion | SPC | Dodge, Fillmore, Freeborn, Houston, Mower, Olmsted and 1 more | 114 min |
Nearby
Mesoscale Discussions in Wisconsin, 2004Mesoscale Discussions in Minnesota, 2004Mesoscale Discussions in Iowa, 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.