Alert archive / Indiana / Mesoscale Discussions in 2017
Mesoscale Discussion 845
The Storm Prediction Center issued this mesoscale discussion at May 26, 2017, 1:25 PM CDT for 14 counties in Illinois; 21 counties in Indiana. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- May 26, 2017, 1:25 PM CDT (18:25 UTC)
- Expired
- May 26, 2017, 4:00 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 35 counties
Champaign County, IL, Coles County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Ford County, IL, Iroquois County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, McLean County, IL, Moultrie County, IL, Piatt County, IL, Vermilion County, IL, Benton County, IN, Boone County, IN, Carroll County, IN, Cass County, IN, Clinton County, IN, Fountain County, IN, Hamilton County, IN, Hendricks County, IN, Howard County, IN, Marion County, IN, Montgomery County, IN, Morgan County, IN, Newton County, IN, Parke County, IN, Putnam County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN, White County, IN
The radar
The Lincoln radar (KILX), 116 km from the middle of the area, began a volume at 18:24 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, 6.4 hours before the alert went out and 54 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
- 1724 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 151 m²/s²
- 0-3 km storm-relative helicity
- 131 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 |
|---|---|---|---|---|
| May 26, 2:45 PM CDT | Tornado Watch | SPC | Champaign, DeWitt, Ford, Fulton, Iroquois, Kankakee and 10 more | 5 hr |
| May 26, 4:31 PM CDT | Mesoscale Discussion | SPC | Champaign, DeWitt, Ford, Fulton, Iroquois, Kankakee and 12 more | 59 min |
| May 26, 6:30 PM CDT | Mesoscale Discussion | SPC | Champaign, Clark, Coles, Cumberland, Douglas, Edgar and 3 more | 90 min |
Nearby
Mesoscale Discussions in Indiana, 2017Mesoscale Discussions in Illinois, 2017Every mesoscale discussion in 2017
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.