Alert archive / Ohio / Severe Thunderstorm Watches in 2015
Severe Thunderstorm Watch 563
The Storm Prediction Center issued this severe thunderstorm watch at Dec 23, 2015, 4:17 PM EST for 11 counties in Kentucky; 32 counties in Ohio. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 23, 2015, 4:17 PM EST (21:17 UTC)
- Expired
- Dec 23, 2015, 11:00 PM EST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 65 kt
All 43 counties
Boone County, KY, Bracken County, KY, Campbell County, KY, Gallatin County, KY, Grant County, KY, Kenton County, KY, Lewis County, KY, Mason County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY, Adams County, OH, Auglaize County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Darke County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Greene County, OH, Hamilton County, OH, Hardin County, OH, Highland County, OH, Hocking County, OH, Licking County, OH, Logan County, OH, Madison County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Pickaway County, OH, Pike County, OH, Preble County, OH, Ross County, OH, Scioto County, OH, Shelby County, OH, Union County, OH, Warren County, OH
The radar
The Cincinnati radar (KILN), 39 km from the middle of the area, began a volume at 21:17 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
- 20%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 23, 4:27 PM EST | Severe Thunderstorm Warning | ILN | Darke, Preble | 48 min |
| Dec 23, 4:40 PM EST | Severe Thunderstorm Warning | ILN | Boone, Carroll, Gallatin, Owen | 37 min |
| Dec 23, 4:49 PM EST | Severe Thunderstorm Warning | ILN | Butler, Hamilton, Montgomery, Preble, Warren | 56 min |
| Dec 23, 4:51 PM EST | Tornado Warning | ILN | Darke, Preble | 24 min |
| Dec 23, 5:03 PM EST | Severe Thunderstorm Warning | ILN | Boone, Campbell, Kenton | 42 min |
| Dec 23, 5:11 PM EST | Tornado Warning | ILN | Darke, Miami | 19 min |
| Dec 23, 5:22 PM EST | Severe Thunderstorm Warning | ILN | Champaign, Clark, Logan, Miami, Montgomery, Shelby | 38 min |
| Dec 23, 5:28 PM EST | Tornado Warning | ILN | Miami | 21 min |
| Dec 23, 5:31 PM EST | Severe Thunderstorm Warning | ILN | Butler, Clark, Clinton, Greene, Miami, Montgomery and 1 more | 44 min |
| Dec 23, 5:40 PM EST | Tornado Warning | ILN | Miami, Shelby | 12 min |
| Dec 23, 5:59 PM EST | Severe Thunderstorm Warning | ILN | Champaign, Clark, Logan, Madison, Union | 46 min |
| Dec 23, 7:15 PM EST | Severe Thunderstorm Warning | ILN | Carroll, Gallatin, Grant, Owen | 45 min |
| Dec 23, 7:53 PM EST | Severe Thunderstorm Warning | ILN | Boone, Campbell, Gallatin, Grant, Kenton, Pendleton | 27 min |
| Dec 23, 8:02 PM EST | Tornado Warning | ILN | Campbell, Grant, Kenton, Pendleton | 15 min |
| Dec 23, 8:12 PM EST | Severe Thunderstorm Warning | ILN | Bracken, Campbell, Mason, Pendleton | 48 min |
| Dec 23, 8:12 PM EST | Tornado Warning | ILN | Campbell, Pendleton | 6 min |
| Dec 23, 8:15 PM EST | Tornado Warning | ILN | Bracken, Pendleton | 14 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
Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.3 hours before the alert went out and 39 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
- 133 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 583 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 23, 10:05 AM EST | Mesoscale Discussion | SPC | Gibson, Posey, Vanderburgh | 85 min |
| Dec 23, 10:13 AM EST | Tornado Watch | SPC | Gibson, Posey, Vanderburgh | 8 hr |
| Dec 23, 10:41 AM EST | Mesoscale Discussion | SPC | Lake, Newton | 2 hr |
| Dec 23, 11:29 AM EST | Mesoscale Discussion | SPC | Posey, Vanderburgh | 91 min |
| Dec 23, 1:06 PM EST | Mesoscale Discussion | SPC | Bartholomew, Brown, Clark, Clay, Crawford, Daviess and 31 more | 84 min |
| Dec 23, 1:28 PM EST | Tornado Watch | SPC | Bartholomew, Boone, Brown, Carroll, Clark, Clay and 51 more | 8 hr |
| Dec 23, 2:55 PM EST | Mesoscale Discussion | SPC | Allen, DeKalb, Elkhart, Huntington, Kosciusko, LaGrange and 4 more | 95 min |
| Dec 23, 3:16 PM EST | Mesoscale Discussion | SPC | Bartholomew, Brown, Clark, Crawford, Dearborn, Decatur and 34 more | 59 min |
| Dec 23, 5:59 PM EST | Mesoscale Discussion | SPC | Clark, Crawford, Dubois, Floyd, Harrison, Orange and 4 more | 2 hr |
| Dec 23, 7:13 AM EST | Mesoscale Discussion | SPC | Ballard, Carlisle, Fulton, Graves, Hickman, Livingston and 1 more | 2 hr |
| Dec 23, 3:49 PM EST | Mesoscale Discussion | SPC | Calloway | 86 min |
| Dec 23, 6:26 PM EST | Mesoscale Discussion | SPC | Ashland, Champaign, Clark, Clinton, Coshocton, Crawford and 27 more | 2 hr |
Nearby
Severe Thunderstorm Watches in Ohio, 2015Severe Thunderstorm Watches in Kentucky, 2015Every severe thunderstorm watch in 2015
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.