Alert archive / Indiana / Mesoscale Discussions in 2005
Mesoscale Discussion 1822
The Storm Prediction Center issued this mesoscale discussion at Jul 21, 2005, 10:07 PM CDT for 11 counties in Illinois; 35 counties in Indiana. It was in force for 83 min.
The area
The outline as issued.
The facts
- Issued
- Jul 21, 2005, 10:07 PM CDT (03:07 UTC)
- Expired
- Jul 21, 2005, 11:30 PM CDT
- In force
- 83 min
- Issued by
- the Storm Prediction Center
All 46 counties
Clark County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Edwards County, IL, Jasper County, IL, Lawrence County, IL, Richland County, IL, Wabash County, IL, Bartholomew County, IN, Boone County, IN, Brown County, IN, Clay County, IN, Daviess County, IN, Decatur County, IN, Delaware County, IN, Fayette County, IN, Fountain County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Jackson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Ripley County, IN, Rush County, IN, Shelby County, IN, Sullivan County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN
The radar
The Indianapolis radar (KIND), 58 km from the middle of the area, began a volume at 03:10 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 00:00Z, 3.1 hours before the alert went out and 186 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
- 3002 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1539 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 143 m²/s²
- 0-3 km storm-relative helicity
- 257 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 20.1
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 |
|---|---|---|---|---|
| Jul 21, 7:32 PM CDT | Mesoscale Discussion | SPC | Champaign, Edgar, Ford, Iroquois, Vermilion | 118 min |
| Jul 21, 9:25 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Coles, Crawford, Cumberland, Douglas, Edgar and 3 more | 5 hr |
| Jul 21, 10:55 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Dearborn, Decatur, Fayette, Floyd, Franklin and 10 more | 4 hr |
Nearby
Mesoscale Discussions in Indiana, 2005Mesoscale Discussions in Illinois, 2005Every mesoscale discussion in 2005
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.