Alert archive / Ohio / Severe Thunderstorm Watches in 2015
Severe Thunderstorm Watch 32
The Storm Prediction Center issued this severe thunderstorm watch at Apr 8, 2015, 10:34 AM EDT for 6 counties in Indiana; 26 counties in Kentucky; 33 counties in Ohio. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 8, 2015, 10:34 AM EDT (14:34 UTC)
- Expired
- Apr 8, 2015, 4:00 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 65 counties
Dearborn County, IN, Franklin County, IN, Jefferson County, IN, Ohio County, IN, Ripley County, IN, Switzerland County, IN, Bath County, KY, Boone County, KY, Bourbon County, KY, Boyd County, KY, Bracken County, KY, Campbell County, KY, Carroll County, KY, Carter County, KY, Elliott County, KY, Fleming County, KY, Franklin County, KY, Gallatin County, KY, Grant County, KY, Greenup County, KY, Harrison County, KY, Henry County, KY, Kenton County, KY, Lewis County, KY, Mason County, KY, Nicholas County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY, Rowan County, KY, Scott County, KY, Trimble County, KY, Adams County, OH, Athens County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Gallia County, OH, Greene County, OH, Hamilton County, OH, Highland County, OH, Hocking County, OH, Jackson County, OH, Lawrence County, OH, Licking County, OH, Madison County, OH, Meigs County, OH, Miami County, OH, Montgomery County, OH, Morgan County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Preble County, OH, Ross County, OH, Scioto County, OH, Vinton County, OH, Warren County, OH, Washington County, OH
The radar
The Cincinnati radar (KILN), 19 km from the middle of the area, began a volume at 14:37 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
- 5%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
21 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 10:41 AM EDT | Severe Thunderstorm Warning | ILN | Brown, Butler, Clermont, Clinton, Hamilton, Highland and 1 more | 34 min |
| Apr 8, 10:47 AM EDT | Severe Thunderstorm Warning | ILN | Clinton, Fayette, Greene, Highland, Warren | 43 min |
| Apr 8, 10:55 AM EDT | Severe Thunderstorm Warning | ILN | Champaign, Clark, Madison | 35 min |
| Apr 8, 11:09 AM EDT | Severe Thunderstorm Warning | ILN | Clark, Fayette, Greene, Madison | 36 min |
| Apr 8, 11:15 AM EDT | Severe Thunderstorm Warning | ILN | Boone, Campbell, Gallatin, Grant, Kenton, Pendleton | 45 min |
| Apr 8, 11:21 AM EDT | Severe Thunderstorm Warning | ILN | Switzerland | 39 min |
| Apr 8, 11:26 AM EDT | Severe Thunderstorm Warning | ILN | Adams, Brown, Clermont, Clinton, Fayette, Highland and 3 more | 49 min |
| Apr 8, 11:37 AM EDT | Severe Thunderstorm Warning | ILN | Fayette, Franklin, Madison, Pickaway | 38 min |
| Apr 8, 11:49 AM EDT | Severe Thunderstorm Warning | ILN | Bracken, Mason, Pendleton | 41 min |
| Apr 8, 12:02 PM EDT | Severe Thunderstorm Warning | RLX | Greenup | 58 min |
| Apr 8, 12:06 PM EDT | Severe Thunderstorm Warning | ILN | Lewis | 39 min |
| Apr 8, 12:26 PM EDT | Severe Thunderstorm Warning | ILN | Lewis, Mason, Robertson | 49 min |
| Apr 8, 12:33 PM EDT | Severe Thunderstorm Warning | JKL | Fleming, Rowan | 42 min |
| Apr 8, 12:37 PM EDT | Severe Thunderstorm Warning | LMK | Harrison, Nicholas | 18 min |
| Apr 8, 12:43 PM EDT | Severe Thunderstorm Warning | ILN | Robertson | 19 min |
| Apr 8, 12:56 PM EDT | Severe Thunderstorm Warning | RLX | Boyd, Carter, Greenup | 64 min |
| Apr 8, 1:11 PM EDT | Severe Thunderstorm Warning | JKL | Fleming, Rowan | 34 min |
| Apr 8, 1:12 PM EDT | Severe Thunderstorm Warning | ILN | Lewis | 26 min |
| Apr 8, 1:43 PM EDT | Severe Thunderstorm Warning | JKL | Elliott, Rowan | 47 min |
| Apr 8, 2:05 PM EDT | Severe Thunderstorm Warning | JKL | Elliott, Morgan | 40 min |
| Apr 8, 2:25 PM EDT | Severe Thunderstorm Warning | JKL | Elliott, Johnson, Morgan | 50 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, 2.6 hours before the alert went out and 21 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
- 487 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 711 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 166 m²/s²
- 0-3 km storm-relative helicity
- 194 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 8:41 AM EDT | Mesoscale Discussion | SPC | Bartholomew, Brown, Clay, Decatur, Fayette, Franklin and 18 more | 64 min |
| Apr 8, 10:16 AM EDT | Mesoscale Discussion | SPC | Clark, Dearborn, Jefferson, Jennings, Ohio, Ripley and 2 more | 119 min |
| Apr 8, 1:50 PM EDT | Mesoscale Discussion | SPC | Clark, Clay, Crawford, Daviess, Dubois, Floyd and 14 more | 85 min |
| Apr 8, 2:05 PM EDT | Severe Thunderstorm Watch | SPC | Bartholomew, Boone, Brown, Clark, Clay, Crawford and 41 more | 5 hr |
| Apr 8, 3:43 PM EDT | Mesoscale Discussion | SPC | Bartholomew, Boone, Brown, Clay, Crawford, Daviess and 37 more | 92 min |
| Apr 8, 5:07 PM EDT | Tornado Watch | SPC | Clark, Crawford, Daviess, Dubois, Floyd, Gibson and 16 more | 4 hr |
| Apr 7, 8:58 PM EDT | Mesoscale Discussion | SPC | Bell, Breathitt, Clay, Floyd, Harlan, Jackson and 14 more | 62 min |
| Apr 8, 11:52 AM EDT | Mesoscale Discussion | SPC | Bath, Bourbon, Boyd, Bracken, Carter, Elliott and 17 more | 83 min |
| Apr 8, 12:33 PM EDT | Severe Thunderstorm Watch | SPC | Floyd, Johnson, Lawrence, Magoffin, Martin, Menifee and 5 more | 5 hr |
| Apr 8, 1:51 PM EDT | Mesoscale Discussion | SPC | Boyd, Breathitt, Carter, Elliott, Floyd, Greenup and 10 more | 84 min |
| Apr 8, 2:55 PM EDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Boyle, Breckinridge and 54 more | 2 hr |
| Apr 8, 3:22 PM EDT | Mesoscale Discussion | SPC | Boyd, Breathitt, Clay, Elliott, Floyd, Johnson and 12 more | 83 min |
| Apr 8, 5:50 PM EDT | Mesoscale Discussion | SPC | Adair, Anderson, Barren, Bath, Bourbon, Boyle and 50 more | 115 min |
Nearby
Severe Thunderstorm Watches in Ohio, 2015Severe Thunderstorm Watches in Kentucky, 2015Severe Thunderstorm Watches in Indiana, 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.