Alert archive / Illinois / Mesoscale Discussions in 2016
Mesoscale Discussion 1376
The Storm Prediction Center issued this mesoscale discussion at Jul 23, 2016, 2:50 PM CDT for 9 counties in Illinois; 5 counties in Iowa; 6 counties in Wisconsin. It was in force for 25 min.
The area
The outline as issued.
The facts
- Issued
- Jul 23, 2016, 2:50 PM CDT (19:50 UTC)
- Expired
- Jul 23, 2016, 3:15 PM CDT
- In force
- 25 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 95%
Counties Clayton County, IA, Delaware County, IA, Dubuque County, IA, Jackson County, IA, Jones County, IA, Boone County, IL, Carroll County, IL, DeKalb County, IL, Jo Daviess County, IL, Kane County, IL, McHenry County, IL, Ogle County, IL, Stephenson County, IL, Winnebago County, IL, Grant County, WI, Green County, WI, Iowa County, WI, Lafayette County, WI, Rock County, WI, Walworth County, WI
The radar
The Quad Cities radar (KDVN), 101 km from the middle of the area, began a volume at 19:52 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 7.8 hours before the alert went out and 97 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
- 2607 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 807 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 83 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 |
|---|---|---|---|---|
| Jul 23, 1:06 PM CDT | Mesoscale Discussion | SPC | Boone, McHenry, Winnebago | 2 hr |
| Jul 23, 3:23 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 16 more | 7 hr |
| Jul 23, 5:25 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, DeKalb, DuPage, Jo Daviess, Kane and 8 more | 2 hr |
| Jul 23, 8:58 AM CDT | Mesoscale Discussion | SPC | Allamakee, Clayton, Fayette, Howard, Winneshiek | 3 hr |
| Jul 23, 2:08 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Buchanan, Cedar, Clayton, Clinton and 8 more | 3 hr |
Nearby
Mesoscale Discussions in Illinois, 2016Mesoscale Discussions in Wisconsin, 2016Mesoscale Discussions in Iowa, 2016Every mesoscale discussion in 2016
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.