Alert archive / Illinois / Mesoscale Discussions in 2016
Mesoscale Discussion 1668
The Storm Prediction Center issued this mesoscale discussion at Sep 9, 2016, 5:08 PM CDT for 26 counties in Illinois; 21 counties in Indiana. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 9, 2016, 5:08 PM CDT (22:08 UTC)
- Expired
- Sep 9, 2016, 7:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 47 counties
Bond County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Fayette County, IL, Jasper County, IL, Lawrence County, IL, Madison County, IL, Marion County, IL, Montgomery County, IL, Moultrie County, IL, Piatt County, IL, Richland County, IL, Saint Clair County, IL, Shelby County, IL, Vermilion County, IL, Washington County, IL, Wayne County, IL, Boone County, IN, Brown County, IN, Clay County, IN, Clinton County, IN, Fountain County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Johnson County, IN, Marion County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Shelby County, IN, Sullivan County, IN, Vermillion County, IN, Vigo County, IN
The radar
The Evansville,IN radar (KVWX), 115 km from the middle of the area, began a volume at 22:10 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
Lincoln, IL (KILX), launched 12:00Z, 10.1 hours before the alert went out and 109 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
- 61 J/kg
- Mixed-layer CIN
- -145 J/kg
- Mixed-layer LCL
- 781 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- -115 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 |
|---|---|---|---|---|
| Sep 9, 2:37 PM CDT | Mesoscale Discussion | SPC | Bond, Christian, Clark, Clay, Clinton, Coles and 19 more | 2 hr |
| Sep 9, 6:30 PM CDT | Tornado Watch | SPC | Bond, Champaign, Clark, Clay, Clinton, Coles and 19 more | 5 hr |
Nearby
Mesoscale Discussions in Illinois, 2016Mesoscale Discussions in Indiana, 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.