Alert archive / Kentucky / Mesoscale Discussions in 2006
Mesoscale Discussion 534
The Storm Prediction Center issued this mesoscale discussion at Apr 17, 2006, 8:33 AM EDT for 20 counties in Kentucky; 5 counties in Virginia; Mingo County, West Virginia. It was in force for 117 min.
The area
The outline as issued.
The facts
- Issued
- Apr 17, 2006, 8:33 AM EDT (12:33 UTC)
- Expired
- Apr 17, 2006, 10:30 AM EDT
- In force
- 117 min
- Issued by
- the Storm Prediction Center
All 26 counties
Bath County, KY, Breathitt County, KY, Clark County, KY, Estill County, KY, Floyd County, KY, Jackson County, KY, Johnson County, KY, Knott County, KY, Lee County, KY, Letcher County, KY, Magoffin County, KY, Martin County, KY, Menifee County, KY, Montgomery County, KY, Morgan County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Wolfe County, KY, Buchanan County, VA, City of Norton, VA, Dickenson County, VA, Russell County, VA, Wise County, VA, Mingo County, WV
The radar
The Jackson,KY radar (KJKL), 61 km from the middle of the area, began a volume at 12:36 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
Roanoke, VA (KRNK), launched 12:00Z, 0.6 hours before the alert went out and 281 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
- 728 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 116 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 |
|---|---|---|---|---|
| Apr 17, 11:31 AM EDT | Severe Thunderstorm Watch | SPC | Bland, Carroll, Floyd, Franklin, Giles, Grayson and 21 more | 5 hr |
Nearby
Mesoscale Discussions in Kentucky, 2006Mesoscale Discussions in Virginia, 2006Mesoscale Discussions in West Virginia, 2006Every mesoscale discussion in 2006
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.