Alert archive / Indiana / Mesoscale Discussions in 2012
Mesoscale Discussion 1705
The Storm Prediction Center issued this mesoscale discussion at Aug 5, 2012, 4:57 AM EDT for 18 counties in Indiana; 18 counties in Ohio. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 5, 2012, 4:57 AM EDT (08:57 UTC)
- Expired
- Aug 5, 2012, 7:00 AM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 36 counties
Blackford County, IN, Delaware County, IN, Fayette County, IN, Franklin County, IN, Grant County, IN, Hamilton County, IN, Hancock County, IN, Henry County, IN, Jay County, IN, Johnson County, IN, Madison County, IN, Marion County, IN, Randolph County, IN, Rush County, IN, Shelby County, IN, Tipton County, IN, Union County, IN, Wayne County, IN, Auglaize County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clinton County, OH, Darke County, OH, Delaware County, OH, Fayette County, OH, Greene County, OH, Logan County, OH, Madison County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Preble County, OH, Shelby County, OH, Union County, OH, Warren County, OH
The radar
The Indianapolis radar (KIND), 124 km from the middle of the area, began a volume at 09:00 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
Cncnati-Daytn, OH (KILN), launched 00:00Z, 9.0 hours before the alert went out and 126 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
- 3062 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 842 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 135 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 |
|---|---|---|---|---|
| Aug 5, 5:29 AM EDT | Severe Thunderstorm Watch | SPC | Blackford, Decatur, Delaware, Fayette, Franklin, Grant and 16 more | 3 hr |
| Aug 4, 10:46 PM EDT | Mesoscale Discussion | SPC | Ashland, Ashtabula, Carroll, Champaign, Clark, Columbiana and 35 more | 119 min |
| Aug 5, 7:57 AM EDT | Mesoscale Discussion | SPC | Champaign, Clark, Clinton, Delaware, Fayette, Franklin and 5 more | 63 min |
Nearby
Mesoscale Discussions in Indiana, 2012Mesoscale Discussions in Ohio, 2012Every mesoscale discussion in 2012
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.