Alert archive / Iowa / Mesoscale Discussions in 2020
Mesoscale Discussion 19
The Storm Prediction Center issued this mesoscale discussion at Jan 10, 2020, 5:50 PM CST for Jo Daviess County, Stephenson County, Illinois; 26 counties in Iowa; 18 counties in Wisconsin. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 10, 2020, 5:50 PM CST (23:50 UTC)
- Expired
- Jan 10, 2020, 11:45 PM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Winter mixed precipitation
All 46 counties
Benton County, IA, Black Hawk 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, Jasper County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Linn County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Monroe County, IA, Muscatine County, IA, Poweshiek County, IA, Tama County, IA, Wapello County, IA, Washington County, IA, Jo Daviess County, IL, Stephenson County, IL, 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, Jefferson County, WI, Lafayette County, WI, Ozaukee County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Sheboygan County, WI, Washington County, WI, Waukesha County, WI
The radar
The Quad Cities radar (KDVN), 78 km from the middle of the area, began a volume at 23:52 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, 11.8 hours before the alert went out and 317 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 857 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- 13 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 |
|---|---|---|---|---|
| Jan 10, 12:54 PM CST | Mesoscale Discussion | SPC | Appanoose, Clarke, Decatur, Keokuk, Lucas, Mahaska and 9 more | 6 hr |
Nearby
Mesoscale Discussions in Iowa, 2020Mesoscale Discussions in Wisconsin, 2020Mesoscale Discussions in Illinois, 2020Every mesoscale discussion in 2020
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.