Alert archive / Kentucky / Severe Thunderstorm Watches in 2018
Severe Thunderstorm Watch 10
The Storm Prediction Center issued this severe thunderstorm watch at Mar 17, 2018, 3:33 PM CDT for 4 states. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 17, 2018, 3:33 PM CDT (20:33 UTC)
- Expired
- Mar 17, 2018, 11:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 96 counties
Adair County, KY, Barren County, KY, Bell County, KY, Boyle County, KY, Breathitt County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Estill County, KY, Floyd County, KY, Garrard County, KY, Green County, KY, Harlan County, KY, Hart County, KY, Jackson County, KY, Jessamine County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Larue County, KY, Laurel County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Lincoln County, KY, Madison County, KY, Magoffin County, KY, Marion County, KY, Martin County, KY, McCreary County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Morgan County, KY, Nelson County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Russell County, KY, Taylor County, KY, Washington County, KY, Wayne County, KY, Whitley County, KY, Wolfe County, KY, Ashe County, NC, Avery County, NC, Madison County, NC, Mitchell County, NC, Watauga County, NC, Yancey County, NC, Anderson County, TN, Blount County, TN, Campbell County, TN, Carter County, TN, Claiborne County, TN, Clay County, TN, Cocke County, TN, Cumberland County, TN, Fentress County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hancock County, TN, Hawkins County, TN, Jefferson County, TN, Johnson County, TN, Knox County, TN, Loudon County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Roane County, TN, Scott County, TN, Sevier County, TN, Sullivan County, TN, Unicoi County, TN, Union County, TN, Washington 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, Smyth County, VA, Tazewell County, VA, Washington County, VA, Wise County, VA
The radar
The Jackson,KY radar (KJKL), 82 km from the middle of the area, began a volume at 20:36 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 70%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
28 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 3:34 PM CDT | Severe Thunderstorm Warning | LMK | Boyle, Casey, Marion, Washington | 26 min |
| Mar 17, 3:42 PM CDT | Severe Thunderstorm Warning | LMK | Larue, Marion, Taylor | 18 min |
| Mar 17, 4:12 PM CDT | Severe Thunderstorm Warning | LMK | Boyle, Casey, Lincoln, Marion, Taylor | 18 min |
| Mar 17, 5:00 PM CDT | Severe Thunderstorm Warning | JKL | Clay, Jackson, Laurel, Owsley, Perry, Rockcastle | 30 min |
| Mar 17, 5:25 PM CDT | Severe Thunderstorm Warning | JKL | McCreary, Pulaski, Wayne | 17 min |
| Mar 17, 5:26 PM CDT | Severe Thunderstorm Warning | JKL | Breathitt, Clay, Knott, Leslie, Owsley, Perry | 49 min |
| Mar 17, 5:36 PM CDT | Severe Thunderstorm Warning | JKL | Pike | 24 min |
| Mar 17, 5:44 PM CDT | Severe Thunderstorm Warning | RLX | Buchanan | 33 min |
| Mar 17, 5:51 PM CDT | Severe Thunderstorm Warning | JKL | Bell, McCreary, Whitley | 24 min |
| Mar 17, 5:59 PM CDT | Severe Thunderstorm Warning | MRX | Blount, Knox, Loudon, Roane | 46 min |
| Mar 17, 6:13 PM CDT | Severe Thunderstorm Warning | MRX | Campbell, Claiborne, Grainger, Hancock | 47 min |
| Mar 17, 6:14 PM CDT | Severe Thunderstorm Warning | JKL | Bell, Whitley | 31 min |
| Mar 17, 6:28 PM CDT | Severe Thunderstorm Warning | JKL | Clay, Knox, Laurel, Leslie | 33 min |
| Mar 17, 6:28 PM CDT | Severe Thunderstorm Warning | MRX | Claiborne, Hancock, Hawkins | 47 min |
| Mar 17, 6:38 PM CDT | Severe Thunderstorm Warning | RLX | Dickenson | 24 min |
| Mar 17, 6:42 PM CDT | Severe Thunderstorm Warning | MRX | Blount, Knox, Sevier | 34 min |
| Mar 17, 6:43 PM CDT | Severe Thunderstorm Warning | MRX | Russell, Washington, Wise | 47 min |
| Mar 17, 6:56 PM CDT | Severe Thunderstorm Warning | MRX | Claiborne, Grainger, Hamblen, Hancock, Hawkins | 49 min |
| Mar 17, 7:02 PM CDT | Severe Thunderstorm Warning | MRX | Greene, Hawkins, Sullivan, Washington | 43 min |
| Mar 17, 7:11 PM CDT | Severe Thunderstorm Warning | MRX | Loudon, Meigs, Rhea, Roane | 49 min |
| Mar 17, 7:37 PM CDT | Severe Thunderstorm Warning | MRX | Greene, Hawkins, Washington | 53 min |
| Mar 17, 7:41 PM CDT | Severe Thunderstorm Warning | MRX | Carter, Johnson, Sullivan, Unicoi, Washington | 64 min |
| Mar 17, 8:04 PM CDT | Severe Thunderstorm Warning | GSP | Avery, Burke, Caldwell, McDowell, Mitchell, Yancey | 41 min |
| Mar 17, 8:11 PM CDT | Severe Thunderstorm Warning | MRX | Greene, Hancock, Hawkins, Sullivan, Washington | 49 min |
| Mar 17, 8:29 PM CDT | Severe Thunderstorm Warning | MRX | Cocke, Sevier | 46 min |
| Mar 17, 8:44 PM CDT | Severe Thunderstorm Warning | MRX | Grainger, Greene, Hamblen, Hawkins | 31 min |
| Mar 17, 8:51 PM CDT | Severe Thunderstorm Warning | MRX | Carter, Johnson, Sullivan, Unicoi, Washington | 54 min |
| Mar 17, 9:23 PM CDT | Severe Thunderstorm Warning | MRX | Blount, Sevier | 35 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 8.6 hours before the alert went out and 256 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
- 69 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 772 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 16, 11:46 PM CDT | Mesoscale Discussion | SPC | Ballard, Butler, Caldwell, Calloway, Carlisle, Christian and 13 more | 59 min |
| Mar 17, 2:25 PM CDT | Mesoscale Discussion | SPC | Adair, Barren, Bell, Boyle, Breathitt, Casey and 41 more | 2 hr |
| Mar 17, 6:06 PM CDT | Mesoscale Discussion | SPC | Bell, Breathitt, Clay, Floyd, Harlan, Knott and 10 more | 114 min |
| Mar 17, 5:06 PM CDT | Mesoscale Discussion | SPC | Cherokee, Clay, Graham | 114 min |
Nearby
Severe Thunderstorm Watches in Kentucky, 2018Severe Thunderstorm Watches in Tennessee, 2018Severe Thunderstorm Watches in Virginia, 2018Every severe thunderstorm watch in 2018
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.