Alert archive / Indiana / Mesoscale Discussions in 2017
Mesoscale Discussion 269
The Storm Prediction Center issued this mesoscale discussion at Mar 7, 2017, 1:53 AM CST for 9 counties in Illinois; 17 counties in Indiana; Berrien County, Michigan. It was in force for 97 min.
The area
The outline as issued.
The facts
- Issued
- Mar 7, 2017, 1:53 AM CST (07:53 UTC)
- Expired
- Mar 7, 2017, 3:30 AM CST
- In force
- 97 min
- Issued by
- the Storm Prediction Center
All 27 counties
Champaign County, IL, Coles County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Iroquois County, IL, Moultrie County, IL, Shelby County, IL, Vermilion County, IL, Benton County, IN, Fountain County, IN, Jasper County, IN, Lake County, IN, LaPorte County, IN, Montgomery County, IN, Newton County, IN, Parke County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Tippecanoe County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN, White County, IN, Berrien County, MI
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 7.9 hours before the alert went out and 114 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
- 4 J/kg
- Mixed-layer CIN
- -285 J/kg
- Mixed-layer LCL
- 651 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 475 m²/s²
- 0-3 km storm-relative helicity
- 484 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 |
|---|---|---|---|---|
| Mar 6, 7:42 PM CST | Mesoscale Discussion | SPC | Bureau, Carroll, Henderson, Henry, Jo Daviess, Knox and 12 more | 63 min |
| Mar 6, 8:10 PM CST | Mesoscale Discussion | SPC | Alexander | 3 hr |
| Mar 6, 8:22 PM CST | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 24 more | 2 hr |
| Mar 6, 8:52 PM CST | Tornado Watch | SPC | Adams, Bond, Brown, Bureau, Calhoun, Carroll and 38 more | 6 hr |
| Mar 6, 10:15 PM CST | Mesoscale Discussion | SPC | Boone, DeKalb, DeWitt, Ford, Grundy, Kane and 11 more | 60 min |
| Mar 6, 10:35 PM CST | Severe Thunderstorm Watch | SPC | Boone, Champaign, Christian, Coles, Cook, DeKalb and 25 more | 4 hr |
| Mar 6, 11:13 PM CST | Mesoscale Discussion | SPC | Alexander, Bond, Calhoun, Clay, Clinton, Cumberland and 31 more | 2 hr |
| Mar 7, 2:58 AM CST | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 8 more | 92 min |
Nearby
Mesoscale Discussions in Indiana, 2017Mesoscale Discussions in Illinois, 2017Mesoscale Discussions in Michigan, 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.