Alert archive / Kentucky / Mesoscale Discussions in 2012
Mesoscale Discussion 1500
The Storm Prediction Center issued this mesoscale discussion at Jul 19, 2012, 2:20 PM EDT for 4 states. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Jul 19, 2012, 2:20 PM EDT (18:20 UTC)
- Expired
- Jul 19, 2012, 3:45 PM EDT
- In force
- 85 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 26 counties
Breathitt County, KY, Floyd County, KY, Harlan County, KY, Johnson County, KY, Knott County, KY, Leslie County, KY, Letcher County, KY, Magoffin County, KY, Martin County, KY, Perry County, KY, Pike County, KY, Hancock County, TN, Hawkins County, TN, Sullivan County, TN, Buchanan County, VA, City of Bristol, VA, City of Norton, VA, Dickenson County, VA, Lee County, VA, Russell County, VA, Scott County, VA, Washington County, VA, Wise County, VA, Logan County, WV, McDowell County, WV, Mingo County, WV
The radar
The Jackson,KY radar (KJKL), 67 km from the middle of the area, began a volume at 18:20 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 12:00Z, 6.3 hours before the alert went out and 253 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
- 922 J/kg
- Mixed-layer CIN
- -94 J/kg
- Mixed-layer LCL
- 1009 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 75 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 19, 3:40 PM EDT | Severe Thunderstorm Watch | SPC | Adair, Allen, Anderson, Barren, Bell, Bourbon and 72 more | 7 hr |
| Jul 19, 4:11 PM EDT | Severe Thunderstorm Watch | SPC | Boone, Campbell, Carroll, Gallatin, Grant, Kenton and 2 more | 7 hr |
| Jul 19, 7:17 PM EDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Bath, Bell and 72 more | 88 min |
| Jul 19, 7:42 PM EDT | Mesoscale Discussion | SPC | Anderson, Bedford, Benton, Bledsoe, Campbell, Cannon and 39 more | 93 min |
| Jul 19, 6:53 PM EDT | Mesoscale Discussion | SPC | Berkeley, Jefferson, Morgan | 97 min |
Nearby
Mesoscale Discussions in Kentucky, 2012Mesoscale Discussions in Virginia, 2012Mesoscale Discussions in Tennessee, 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.