Alert archive / Wisconsin / Mesoscale Discussions in 2003
Mesoscale Discussion 2040
The Storm Prediction Center issued this mesoscale discussion at Jul 31, 2003, 8:19 PM CDT for 4 states. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- Jul 31, 2003, 8:19 PM CDT (01:19 UTC)
- Expired
- Jul 31, 2003, 10:15 PM CDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
All 49 counties
Allamakee County, IA, Benton County, IA, Black Hawk County, IA, Bremer County, IA, Buchanan County, IA, Cedar County, IA, Clayton County, IA, Clinton County, IA, Delaware County, IA, Dubuque County, IA, Fayette County, IA, Iowa County, IA, Jackson County, IA, Johnson County, IA, Jones County, IA, Linn County, IA, Winneshiek County, IA, Boone County, IL, Carroll County, IL, Jo Daviess County, IL, Ogle County, IL, Stephenson County, IL, Winnebago County, IL, Houston County, MN, Adams County, WI, Calumet County, WI, Columbia County, WI, Crawford County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Grant County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jackson County, WI, Jefferson County, WI, Juneau County, WI, La Crosse County, WI, Lafayette County, WI, Marquette County, WI, Monroe County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Trempealeau County, WI, Vernon County, WI, Waushara County, WI, Winnebago County, WI
The radar
The La Crosse radar (KARX), 97 km from the middle of the area, began a volume at 01:20 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
Davenport, (KDVN), launched 00:00Z, 1.3 hours before the alert went out and 154 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
- 857 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 1878 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
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 1, 10:59 AM CDT | Mesoscale Discussion | SPC | Bureau, DeKalb, Ford, Fulton, Grundy, Henderson and 20 more | 2 hr |
| Aug 1, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Boone, Brown, Bureau, Cass, DeKalb and 35 more | 6 hr |
| Aug 1, 2:58 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 13 more | 2 hr |
| Aug 1, 3:20 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 13 more | 6 hr |
| Aug 1, 5:49 PM CDT | Mesoscale Discussion | SPC | Boone, Brown, Bureau, Cass, DeKalb, Fulton and 29 more | 86 min |
| Jul 31, 11:14 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Boone, Bremer, Buchanan, Butler and 13 more | 2 hr |
Nearby
Mesoscale Discussions in Wisconsin, 2003Mesoscale Discussions in Iowa, 2003Mesoscale Discussions in Illinois, 2003Every mesoscale discussion in 2003
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.