Alert archive / Kentucky / Mesoscale Discussions in 2009
Mesoscale Discussion 848
The Storm Prediction Center issued this mesoscale discussion at May 16, 2009, 1:46 PM CDT for 41 counties in Kentucky; Gallia County, Lawrence County, Ohio; 26 counties in West Virginia. It was in force for 59 min.
The area
The outline as issued.
The facts
- Issued
- May 16, 2009, 1:46 PM CDT (18:46 UTC)
- Expired
- May 16, 2009, 2:45 PM CDT
- In force
- 59 min
- Issued by
- the Storm Prediction Center
All 69 counties
Adair County, KY, Boyd County, KY, Breathitt County, KY, Carter County, KY, Casey County, KY, Clay County, KY, Clinton County, KY, Cumberland County, KY, Elliott County, KY, Estill County, KY, Floyd County, KY, Garrard County, KY, Harlan County, KY, Jackson County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Laurel County, KY, Lawrence County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Lincoln County, KY, Madison County, KY, Magoffin County, KY, Martin County, KY, McCreary County, KY, Menifee County, KY, Metcalfe County, KY, Morgan County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Rowan County, KY, Russell County, KY, Wayne County, KY, Whitley County, KY, Wolfe County, KY, Gallia County, OH, Lawrence County, OH, Barbour County, WV, Boone County, WV, Braxton County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Fayette County, WV, Gilmer County, WV, Harrison County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, Mingo County, WV, Nicholas County, WV, Putnam County, WV, Ritchie County, WV, Roane County, WV, Taylor County, WV, Upshur County, WV, Wayne County, WV, Webster County, WV, Wirt County, WV
The radar
The Jackson,KY radar (KJKL), 70 km from the middle of the area, began a volume at 18:47 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
Roanoke, VA (KRNK), launched 12:00Z, 6.8 hours before the alert went out and 291 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
- 209 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 534 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 |
|---|---|---|---|---|
| May 15, 8:14 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, Trimble | 2 hr |
| May 15, 10:28 PM CDT | Mesoscale Discussion | SPC | Boone, Campbell, Kenton | 2 hr |
| May 16, 11:05 AM CDT | Mesoscale Discussion | SPC | Belmont, Jefferson, Monroe, Washington | 55 min |
| May 16, 12:00 PM CDT | Severe Thunderstorm Watch | SPC | Belmont, Monroe | 7 hr |
| May 16, 1:36 PM CDT | Mesoscale Discussion | SPC | Jefferson | 24 min |
| May 16, 2:55 PM CDT | Mesoscale Discussion | SPC | Monongalia | 65 min |
Nearby
Mesoscale Discussions in Kentucky, 2009Mesoscale Discussions in West Virginia, 2009Mesoscale Discussions in Ohio, 2009Every mesoscale discussion in 2009
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.