Alert archive / Indiana / Mesoscale Discussions in 2008
Mesoscale Discussion 1772
The Storm Prediction Center issued this mesoscale discussion at Jul 12, 2008, 3:37 PM CDT for 22 counties in Illinois; 23 counties in Indiana. It was in force for 83 min.
The area
The outline as issued.
The facts
- Issued
- Jul 12, 2008, 3:37 PM CDT (20:37 UTC)
- Expired
- Jul 12, 2008, 5:00 PM CDT
- In force
- 83 min
- Issued by
- the Storm Prediction Center
All 45 counties
Bond County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay 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, Macon County, IL, Macoupin County, IL, Marion County, IL, Montgomery County, IL, Moultrie County, IL, Piatt County, IL, Sangamon County, IL, Shelby County, IL, Vermilion County, IL, Boone County, IN, Carroll County, IN, Clay County, IN, Clinton County, IN, Fountain County, IN, Greene County, IN, Hamilton County, IN, Hendricks County, IN, Howard 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, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN
The radar
The Lincoln radar (KILX), 130 km from the middle of the area, began a volume at 20:41 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, 8.6 hours before the alert went out and 78 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
- 973 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 739 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 373 m²/s²
- 0-3 km storm-relative helicity
- 403 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 11.3
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 1:52 AM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cass, Christian, DeKalb and 33 more | 53 min |
| Jul 12, 4:28 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Champaign, Clark, Clay, Clinton and 39 more | 5 hr |
Nearby
Mesoscale Discussions in Indiana, 2008Mesoscale Discussions in Illinois, 2008Every mesoscale discussion in 2008
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.