Alert archive / Kentucky / Tornado Watches in 2018
Tornado Watch 31
The Storm Prediction Center issued this tornado watch at Apr 3, 2018, 7:30 PM EDT for 47 counties in Indiana; 68 counties in Kentucky; 22 counties in Ohio. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 2018, 7:30 PM EDT (23:30 UTC)
- Expired
- Apr 4, 2018, 12:32 AM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 65 kt
All 137 counties
Bartholomew County, IN, Boone County, IN, Brown County, IN, Clark County, IN, Clay County, IN, Crawford County, IN, Daviess County, IN, Dearborn County, IN, Decatur County, IN, Delaware County, IN, Dubois County, IN, Fayette County, IN, Floyd County, IN, Franklin County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Harrison County, IN, Hendricks County, IN, Henry County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Morgan County, IN, Ohio County, IN, Orange County, IN, Owen County, IN, Perry County, IN, Putnam County, IN, Randolph County, IN, Ripley County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Sullivan County, IN, Switzerland County, IN, Tipton County, IN, Union County, IN, Washington County, IN, Wayne County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Boone County, KY, Bourbon County, KY, Boyle County, KY, Bracken County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Campbell County, KY, Carroll County, KY, Casey County, KY, Christian County, KY, Clark County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Fayette County, KY, Fleming County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henry County, KY, Jefferson County, KY, Jessamine County, KY, Kenton County, KY, Larue County, KY, Lewis County, KY, Lincoln County, KY, Logan County, KY, Madison County, KY, Marion County, KY, Mason County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Montgomery County, KY, Muhlenberg County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY, Rowan County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Todd County, KY, Trimble County, KY, Warren County, KY, Washington County, KY, Woodford County, KY, Adams County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Darke County, OH, Fayette County, OH, Greene County, OH, Hamilton County, OH, Highland County, OH, Madison 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, Warren County, OH
The radar
The Cincinnati radar (KILN), 94 km from the middle of the area, began a volume at 23:35 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
- 50%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 80%
- One or more gusts of 65 knots or more
- 50%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
47 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 7:30 PM EDT | Severe Thunderstorm Warning | LMK | Butler, Edmonson, Grayson, Ohio, Warren | 30 min |
| Apr 3, 7:36 PM EDT | Severe Thunderstorm Warning | LMK | Breckinridge, Bullitt, Hardin, Meade, Nelson | 39 min |
| Apr 3, 7:43 PM EDT | Severe Thunderstorm Warning | PAH | Muhlenberg | 17 min |
| Apr 3, 7:44 PM EDT | Severe Thunderstorm Warning | ILN | Lewis, Mason | 46 min |
| Apr 3, 7:45 PM EDT | Severe Thunderstorm Warning | IND | Clay, Greene, Owen, Sullivan | 30 min |
| Apr 3, 7:46 PM EDT | Severe Thunderstorm Warning | LMK | Ohio | 18 min |
| Apr 3, 7:53 PM EDT | Severe Thunderstorm Warning | LMK | Clark | 37 min |
| Apr 3, 7:55 PM EDT | Severe Thunderstorm Warning | LMK | Grayson, Hardin | 35 min |
| Apr 3, 7:57 PM EDT | Severe Thunderstorm Warning | LMK | Butler, Edmonson, Grayson, Hart, Warren | 33 min |
| Apr 3, 8:03 PM EDT | Severe Thunderstorm Warning | LMK | Breckinridge, Grayson, Ohio | 27 min |
| Apr 3, 8:06 PM EDT | Severe Thunderstorm Warning | ILN | Boone, Campbell, Kenton | 24 min |
| Apr 3, 8:10 PM EDT | Severe Thunderstorm Warning | PAH | Todd | 9 min |
| Apr 3, 8:12 PM EDT | Severe Thunderstorm Warning | LMK | Bullitt, Hardin, Nelson | 33 min |
| Apr 3, 8:17 PM EDT | Tornado Warning | LMK | Hardin, Larue | 28 min |
| Apr 3, 8:21 PM EDT | Severe Thunderstorm Warning | LMK | Henry, Trimble | 9 min |
| Apr 3, 8:28 PM EDT | Severe Thunderstorm Warning | IND | Hancock, Marion | 32 min |
| Apr 3, 8:28 PM EDT | Severe Thunderstorm Warning | LMK | Green, Hart, Larue | 32 min |
| Apr 3, 8:31 PM EDT | Severe Thunderstorm Warning | LMK | Larue, Marion, Nelson, Washington | 29 min |
| Apr 3, 8:35 PM EDT | Tornado Warning | LMK | Larue, Marion, Nelson | 25 min |
| Apr 3, 8:36 PM EDT | Severe Thunderstorm Warning | LMK | Edmonson, Hart, Warren | 24 min |
| Apr 3, 8:41 PM EDT | Tornado Warning | LMK | Green, Hart | 19 min |
| Apr 3, 8:57 PM EDT | Severe Thunderstorm Warning | LMK | Boyle, Casey, Garrard, Lincoln, Marion, Mercer and 1 more | 48 min |
| Apr 3, 8:59 PM EDT | Severe Thunderstorm Warning | LMK | Adair, Casey, Edmonson, Green, Hart, Lincoln and 4 more | 46 min |
| Apr 3, 9:07 PM EDT | Tornado Warning | LMK | Boyle, Marion | 23 min |
| Apr 3, 9:07 PM EDT | Severe Thunderstorm Warning | PAH | Christian, Todd | 23 min |
| Apr 3, 9:09 PM EDT | Severe Thunderstorm Warning | ILN | Grant, Owen | 16 min |
| Apr 3, 9:11 PM EDT | Tornado Warning | LMK | Marion, Taylor | 19 min |
| Apr 3, 9:14 PM EDT | Severe Thunderstorm Warning | LMK | Harrison, Scott | 31 min |
| Apr 3, 9:20 PM EDT | Severe Thunderstorm Warning | LMK | Breckinridge, Hancock | 25 min |
| Apr 3, 9:25 PM EDT | Tornado Warning | LMK | Casey, Marion, Taylor | 20 min |
| Apr 3, 9:31 PM EDT | Tornado Warning | LMK | Boyle, Garrard, Lincoln | 29 min |
| Apr 3, 9:37 PM EDT | Severe Thunderstorm Warning | LMK | Bourbon, Clark, Fayette, Jessamine | 23 min |
| Apr 3, 9:41 PM EDT | Severe Thunderstorm Warning | LMK | Breckinridge, Grayson, Hardin | 21 min |
| Apr 3, 9:41 PM EDT | Tornado Warning | LMK | Casey, Garrard, Lincoln | 19 min |
| Apr 3, 9:46 PM EDT | Severe Thunderstorm Warning | LMK | Butler, Edmonson, Logan, Warren | 29 min |
| Apr 3, 9:47 PM EDT | Severe Thunderstorm Warning | LMK | Casey, Lincoln | 28 min |
| Apr 3, 9:56 PM EDT | Severe Thunderstorm Warning | LMK | Clark, Madison | 49 min |
| Apr 3, 9:56 PM EDT | Tornado Warning | LMK | Garrard, Lincoln | 34 min |
| Apr 3, 9:59 PM EDT | Severe Thunderstorm Warning | LMK | Bourbon, Clark | 31 min |
| Apr 3, 10:04 PM EDT | Severe Thunderstorm Warning | LMK | Madison | 26 min |
| Apr 3, 10:11 PM EDT | Severe Thunderstorm Warning | LMK | Logan, Simpson | 34 min |
| Apr 3, 10:12 PM EDT | Severe Thunderstorm Warning | JKL | Bath, Estill, Lee, Menifee, Montgomery, Powell and 1 more | 48 min |
| Apr 3, 10:15 PM EDT | Severe Thunderstorm Warning | LMK | Lincoln | 30 min |
| Apr 3, 10:16 PM EDT | Tornado Warning | LMK | Madison | 14 min |
| Apr 3, 10:34 PM EDT | Severe Thunderstorm Warning | LMK | Allen, Barren, Simpson, Warren | 26 min |
| Apr 3, 10:57 PM EDT | Severe Thunderstorm Warning | LMK | Allen, Barren, Cumberland, Metcalfe, Monroe | 33 min |
| Apr 4, 12:09 AM EDT | Severe Thunderstorm Warning | LMK | Garrard, Madison | 21 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, 11.5 hours before the alert went out and 96 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
- 542 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 358 m²/s²
- 0-3 km storm-relative helicity
- 356 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
895
WWUS20 KWNS 032328
SEL1
SPC WW 032328
INZ000-KYZ000-OHZ000-040500-
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 31
NWS Storm Prediction Center Norman OK
730 PM EDT Tue Apr 3 2018
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Central and southeast Indiana
Central Kentucky
Southwest Ohio
* Effective this Tuesday night and Wednesday morning from 730 PM
until 100 AM EDT.
* Primary threats include...
A few tornadoes possible
Widespread damaging winds likely with isolated significant gusts
to 75 mph possible
Scattered large hail events to 1.5 inches in diameter possible
SUMMARY...Bands of strong-severe storms will continue to move across
Ohio, Kentucky, and Indiana into tonight, in advance of a cold front
moving eastward from Illinois. A few tornadoes will be possible
with both pre-frontal supercells, as well as with circulations
embedded in what may become a more solid line later this evening.
Otherwise, damaging winds and large hail can be expected with the
stronger storms.
The tornado watch area is approximately along and 80 statute miles
east and west of a line from 35 miles east northeast of Dayton OH to
20 miles south of Bowling Green KY. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU1).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.
&&
OTHER WATCH INFORMATION...This tornado watch replaces tornado
watch number 26. Watch number 26 will not be in effect after 730
PM EDT. CONTINUE...WW 27...WW 28...WW 29...WW 30...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 450. Mean
storm motion vector 26045.
...ThompsonSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 11:46 PM EDT | Mesoscale Discussion | SPC | Gibson, Pike, Posey | 119 min |
| Apr 3, 12:41 PM EDT | Mesoscale Discussion | SPC | Bartholomew, Blackford, Brown, Clark, Clay, Crawford and 46 more | 3 hr |
| Apr 3, 1:16 PM EDT | Tornado Watch | SPC | Bartholomew, Boone, Brown, Clark, Clay, Crawford and 48 more | 6 hr |
| Apr 3, 1:57 PM EDT | Mesoscale Discussion | SPC | Posey | 2 hr |
| Apr 3, 2:33 PM EDT | Tornado Watch | SPC | Gibson, Pike, Posey, Spencer, Vanderburgh, Warrick | 7 hr |
| Apr 3, 4:18 PM EDT | Mesoscale Discussion | SPC | Clark, Dearborn, Decatur, Fayette, Floyd, Franklin and 9 more | 117 min |
| Apr 3, 4:34 PM EDT | Mesoscale Discussion | SPC | Posey | 86 min |
| Apr 3, 6:38 PM EDT | Mesoscale Discussion | SPC | Bath, Bourbon, Boyd, Carter, Clark, Elliott and 12 more | 2 hr |
| Apr 3, 7:07 PM EDT | Severe Thunderstorm Watch | SPC | Boyd, Carter, Greenup, Lawrence | 6 hr |
Nearby
Tornado Watches in Kentucky, 2018Tornado Watches in Indiana, 2018Tornado Watches in Ohio, 2018Every tornado 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.