Alert archive / Illinois / Mesoscale Discussions in 2015
Mesoscale Discussion 1370
The Storm Prediction Center issued this mesoscale discussion at Jul 11, 2015, 6:36 PM CDT for 28 counties in Illinois; 5 counties in Missouri. It was in force for 84 min.
The area
The outline as issued.
The facts
- Issued
- Jul 11, 2015, 6:36 PM CDT (23:36 UTC)
- Expired
- Jul 11, 2015, 8:00 PM CDT
- In force
- 84 min
- Issued by
- the Storm Prediction Center
All 33 counties
Adams County, IL, Bond County, IL, Brown County, IL, Calhoun County, IL, Cass County, IL, Christian County, IL, Clay County, IL, Clinton County, IL, Effingham County, IL, Fayette County, IL, Fulton County, IL, Greene County, IL, Hancock County, IL, Jersey County, IL, Logan County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Mason County, IL, McDonough County, IL, Menard County, IL, Montgomery County, IL, Morgan County, IL, Pike County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, City of Saint Louis, MO, Lewis County, MO, Marion County, MO, Pike County, MO, Ralls County, MO
The radar
The Lincoln radar (KILX), 82 km from the middle of the area, began a volume at 23:39 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, 11.6 hours before the alert went out and 135 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
- 935 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 11, 12:33 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Cass, Champaign, Christian and 35 more | 87 min |
| Jul 11, 1:39 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Cass, Champaign, Christian, Coles, Cumberland and 26 more | 6 hr |
| Jul 11, 3:56 PM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clay, Coles and 22 more | 2 hr |
Nearby
Mesoscale Discussions in Illinois, 2015Mesoscale Discussions in Missouri, 2015Every mesoscale discussion in 2015
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.