Alert archive / Indiana / Mesoscale Discussions in 2011
Mesoscale Discussion 260
The Storm Prediction Center issued this mesoscale discussion at Mar 23, 2011, 3:20 PM CDT for Iroquois County, Vermilion County, Illinois; 31 counties in Indiana. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Mar 23, 2011, 3:20 PM CDT (20:20 UTC)
- Expired
- Mar 23, 2011, 4:45 PM CDT
- In force
- 85 min
- Issued by
- the Storm Prediction Center
All 33 counties
Iroquois County, IL, Vermilion County, IL, Benton County, IN, Blackford County, IN, Boone County, IN, Carroll County, IN, Cass County, IN, Clinton County, IN, Delaware County, IN, Fountain County, IN, Fulton County, IN, Grant County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jay County, IN, Madison County, IN, Marion County, IN, Miami County, IN, Montgomery County, IN, Parke County, IN, Pulaski County, IN, Putnam County, IN, Randolph County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Wabash County, IN, Warren County, IN, White County, IN
The radar
The Indianapolis radar (KIND), 63 km from the middle of the area, began a volume at 20:22 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 nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 8.3 hours before the alert went out and 202 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
- 182 J/kg
- Mixed-layer CIN
- -162 J/kg
- Mixed-layer LCL
- 876 m above ground
- 0-6 km bulk shear
- 82 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 |
|---|---|---|---|---|
| Mar 22, 11:21 PM CDT | Mesoscale Discussion | SPC | Hancock, Henderson, Warren | 84 min |
| Mar 23, 11:02 AM CDT | Mesoscale Discussion | SPC | Bartholomew, Brown, Clark, Crawford, Dearborn, Decatur and 25 more | 88 min |
| Mar 23, 12:12 PM CDT | Mesoscale Discussion | SPC | Allen, DeKalb, Elkhart, Fulton, Huntington, Kosciusko and 6 more | 93 min |
| Mar 23, 12:13 PM CDT | Tornado Watch | SPC | Bartholomew, Clark, Crawford, Dearborn, Decatur, Dubois and 24 more | 7 hr |
| Mar 23, 6:37 PM CDT | Mesoscale Discussion | SPC | Boone, Clinton, Delaware, Fayette, Fountain, Franklin and 15 more | 83 min |
Nearby
Mesoscale Discussions in Indiana, 2011Mesoscale Discussions in Illinois, 2011Every mesoscale discussion in 2011
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.