Alert archive / Wisconsin / Mesoscale Discussions in 2024
Mesoscale Discussion 1920
The Storm Prediction Center issued this mesoscale discussion at Aug 16, 2024, 1:53 PM CDT for 6 counties in Illinois; Jackson County, Iowa; 15 counties in Wisconsin. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 16, 2024, 1:53 PM CDT (18:53 UTC)
- Expired
- Aug 16, 2024, 4:30 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch unlikely
- Chance of a watch
- 20%
All 22 counties
Jackson County, IA, Boone County, IL, Carroll County, IL, Jo Daviess County, IL, McHenry County, IL, Stephenson County, IL, Winnebago County, IL, Columbia County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jefferson County, WI, Lafayette County, WI, Marquette County, WI, Rock County, WI, Sauk County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI
The radar
The Milwaukee radar (KMKX), 99 km from the middle of the area, began a volume at 18:54 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, 6.9 hours before the alert went out and 228 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
- 181 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 1219 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
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 15, 7:13 PM CDT | Mesoscale Discussion | SPC | Franklin, Gallatin, Hamilton, Hardin, Jackson, Jefferson and 7 more | 92 min |
| Aug 15, 8:47 PM CDT | Mesoscale Discussion | SPC | Alexander, Jackson, Johnson, Massac, Monroe, Perry and 6 more | 118 min |
| Aug 15, 8:51 PM CDT | Mesoscale Discussion | SPC | Bureau, Fulton, Hancock, Henderson, Henry, Knox and 8 more | 84 min |
| Aug 15, 9:08 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, DeWitt, Fulton, Hancock, Henderson, Henry and 15 more | 6 hr |
| Aug 15, 11:34 PM CDT | Mesoscale Discussion | SPC | DeWitt, Fulton, Livingston, Logan, McDonough, McLean and 10 more | 86 min |
| Aug 16, 1:19 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Champaign, Christian, Coles and 33 more | 116 min |
| Aug 16, 5:31 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Kane and 8 more | 119 min |
Nearby
Mesoscale Discussions in Wisconsin, 2024Mesoscale Discussions in Illinois, 2024Mesoscale Discussions in Iowa, 2024Every mesoscale discussion in 2024
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.