Alert archive / Illinois / Mesoscale Discussions in 2016
Mesoscale Discussion 1812
The Storm Prediction Center issued this mesoscale discussion at Nov 2, 2016, 3:32 PM CDT for 18 counties in Illinois; 9 counties in Kansas; 18 counties in Missouri. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Nov 2, 2016, 3:32 PM CDT (20:32 UTC)
- Expired
- Nov 2, 2016, 5:30 PM CDT
- In force
- 118 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 45 counties
Adams County, IL, Brown County, IL, Cass County, IL, DeWitt County, IL, Ford County, IL, Fulton County, IL, Logan County, IL, Macon County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Morgan County, IL, Pike County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Tazewell County, IL, Woodford County, IL, Anderson County, KS, Coffey County, KS, Douglas County, KS, Franklin County, KS, Greenwood County, KS, Johnson County, KS, Miami County, KS, Osage County, KS, Wyandotte County, KS, Audrain County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Macon County, MO, Marion County, MO, Monroe County, MO, Pike County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Shelby County, MO
The radar
The Pleasant Hill radar (KEAX), 177 km from the middle of the area, began a volume at 20:35 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
Topeka, KS (KFOE), launched 12:00Z, 8.5 hours before the alert went out and 282 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
- 1127 J/kg
- Mixed-layer CIN
- -124 J/kg
- Mixed-layer LCL
- 816 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 5.1
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 |
|---|---|---|---|---|
| Nov 1, 11:46 PM CDT | Mesoscale Discussion | SPC | Henderson, Henry, Mercer, Rock Island, Warren, Whiteside | 2 hr |
Nearby
Mesoscale Discussions in Illinois, 2016Mesoscale Discussions in Missouri, 2016Mesoscale Discussions in Kansas, 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.