Alert archive / Kentucky / Tornado Watches in 2017

Tornado Watch 53

March 1, 20174 states

The Storm Prediction Center issued this tornado watch at Mar 1, 2017, 5:57 AM EST for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Mar 1, 2017, 5:57 AM EST (10:57 UTC)
Expired
Mar 1, 2017, 11:00 AM EST
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
70 kt
All 129 counties

Clark County, IN, Crawford County, IN, Dearborn County, IN, Dubois County, IN, Floyd County, IN, Franklin County, IN, Harrison County, IN, Jefferson County, IN, Ohio County, IN, Orange County, IN, Perry County, IN, Ripley County, IN, Scott County, IN, Switzerland County, IN, Washington County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren 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, Clark County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Fayette 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, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Warren County, KY, Washington County, KY, Woodford County, KY, Adams County, OH, Brown County, OH, Butler County, OH, Clermont County, OH, Clinton County, OH, Fairfield County, OH, Fayette County, OH, Hamilton County, OH, Highland County, OH, Hocking County, OH, Pickaway County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Warren County, OH, Bedford County, TN, Cannon County, TN, Cheatham County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Fentress County, TN, Giles County, TN, Grundy County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Lawrence County, TN, Lewis County, TN, Macon County, TN, Marshall County, TN, Maury County, TN, Montgomery County, TN, Overton County, TN, Perry County, TN, Pickett County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, Wayne County, TN, White County, TN, Williamson County, TN, Wilson County, TN

The radar

The Louisville radar (KLVX), 49 km from the middle of the area, began a volume at 10:59 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
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
90%
One or more gusts of 65 knots or more
40%
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
95%

Warnings issued inside it

48 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Mar 1, 5:57 AM ESTSevere Thunderstorm WarningLMKClark, Crawford, Floyd, Harrison, Jefferson, Perry and 2 more33 min
Mar 1, 5:59 AM ESTSevere Thunderstorm WarningILNDearborn, Fayette, Franklin, Ripley, Union46 min
Mar 1, 6:04 AM ESTTornado WarningLMKClark26 min
Mar 1, 6:13 AM ESTSevere Thunderstorm WarningILNScioto19 min
Mar 1, 6:15 AM ESTSevere Thunderstorm WarningILNDearborn, Ohio, Ripley, Switzerland30 min
Mar 1, 6:22 AM ESTSevere Thunderstorm WarningLMKClark, Floyd, Harrison, Jefferson, Scott23 min
Mar 1, 6:30 AM ESTSevere Thunderstorm WarningILNDearborn, Franklin30 min
Mar 1, 6:32 AM ESTSevere Thunderstorm WarningLMKBreckinridge, Butler, Grayson, Hancock, Hardin, Meade and 1 more43 min
Mar 1, 6:39 AM ESTSevere Thunderstorm WarningILNDearborn, Ohio, Switzerland36 min
Mar 1, 6:41 AM ESTSevere Thunderstorm WarningLMKAnderson, Franklin, Henry, Scott, Shelby34 min
Mar 1, 6:46 AM ESTSevere Thunderstorm WarningLMKHarrison44 min
Mar 1, 6:48 AM ESTSevere Thunderstorm WarningILNBrown, Butler, Clermont, Clinton, Greene, Hamilton and 2 more42 min
Mar 1, 6:54 AM ESTSevere Thunderstorm WarningOHXDickson, Hickman, Houston, Humphreys, Montgomery, Perry and 1 more36 min
Mar 1, 6:58 AM ESTTornado WarningILNBoone, Campbell, Kenton14 min
Mar 1, 7:00 AM ESTSevere Thunderstorm WarningILNBracken, Campbell, Grant, Owen, Pendleton45 min
Mar 1, 7:00 AM ESTTornado WarningLMKSpencer15 min
Mar 1, 7:04 AM ESTSevere Thunderstorm WarningOHXHickman, Lewis, Perry41 min
Mar 1, 7:08 AM ESTSevere Thunderstorm WarningLMKBarren, Breckinridge, Butler, Edmonson, Grayson, Green and 7 more37 min
Mar 1, 7:17 AM ESTSevere Thunderstorm WarningLMKBourbon, Franklin, Harrison, Nicholas, Scott43 min
Mar 1, 7:18 AM ESTFlash Flood WarningLMKBreckinridge, Grayson, Hancock, Hardin, Meade, Ohio3 hr
Mar 1, 7:20 AM ESTSevere Thunderstorm WarningLMKAnderson, Boyle, Jessamine, Marion, Mercer, Nelson and 4 more40 min
Mar 1, 7:22 AM ESTSevere Thunderstorm WarningILNBracken, Lewis, Mason, Robertson53 min
Mar 1, 7:22 AM ESTSevere Thunderstorm WarningILNClinton, Fayette, Greene, Highland, Pickaway, Ross23 min
Mar 1, 7:24 AM ESTSevere Thunderstorm WarningOHXCheatham, Davidson, Dickson, Hickman, Houston, Humphreys and 3 more36 min
Mar 1, 7:26 AM ESTSevere Thunderstorm WarningOHXMontgomery, Robertson34 min
Mar 1, 7:28 AM ESTSevere Thunderstorm WarningLMKAnderson, Bourbon, Clark, Fayette, Jessamine, Madison and 2 more47 min
Mar 1, 7:29 AM ESTSevere Thunderstorm WarningLMKAllen, Barren, Butler, Edmonson, Logan, Metcalfe and 3 more46 min
Mar 1, 7:41 AM ESTSevere Thunderstorm WarningLMKAdair, Barren, Butler, Edmonson, Grayson, Green and 9 more34 min
Mar 1, 7:43 AM ESTSevere Thunderstorm WarningILNHighland, Pike, Ross47 min
Mar 1, 7:50 AM ESTSevere Thunderstorm WarningLMKBoyle, Casey, Garrard, Jessamine, Lincoln, Marion and 4 more25 min
Mar 1, 7:55 AM ESTSevere Thunderstorm WarningOHXDavidson, Robertson, Rutherford, Sumner, Trousdale, Williamson and 1 more35 min
Mar 1, 7:58 AM ESTSevere Thunderstorm WarningILNLewis47 min
Mar 1, 8:03 AM ESTTornado WarningOHXDavidson, Rutherford, Williamson, Wilson27 min
Mar 1, 8:04 AM ESTSevere Thunderstorm WarningLMKBoyle, Casey, Garrard, Jessamine, Lincoln, Madison41 min
Mar 1, 8:04 AM ESTTornado WarningILNAdams, Scioto14 min
Mar 1, 8:09 AM ESTSevere Thunderstorm WarningLMKAdair, Allen, Barren, Casey, Cumberland, Edmonson and 6 more36 min
Mar 1, 8:14 AM ESTSevere Thunderstorm WarningLMKBourbon, Clark, Fayette, Jessamine, Madison31 min
Mar 1, 8:24 AM ESTSevere Thunderstorm WarningILNScioto25 min
Mar 1, 8:26 AM ESTSevere Thunderstorm WarningOHXCannon, Clay, DeKalb, Jackson, Macon, Rutherford and 4 more34 min
Mar 1, 8:28 AM ESTTornado WarningOHXSmith, Wilson32 min
Mar 1, 8:39 AM ESTSevere Thunderstorm WarningLMKAdair, Allen, Barren, Casey, Clinton, Cumberland and 5 more51 min
Mar 1, 8:49 AM ESTTornado WarningOHXClay, Macon26 min
Mar 1, 8:52 AM ESTTornado WarningOHXDeKalb, Putnam, Smith23 min
Mar 1, 8:58 AM ESTSevere Thunderstorm WarningOHXCannon, Clay, DeKalb, Jackson, Macon, Overton and 5 more32 min
Mar 1, 9:12 AM ESTTornado WarningOHXJackson, Overton, Putnam33 min
Mar 1, 9:20 AM ESTSevere Thunderstorm WarningOHXClay, Cumberland, DeKalb, Fentress, Jackson, Overton and 3 more25 min
Mar 1, 9:21 AM ESTSevere Thunderstorm WarningLMKClinton, Cumberland, Russell24 min
Mar 1, 9:43 AM ESTSevere Thunderstorm WarningOHXCumberland, Fentress, Overton, Pickett, Putnam, White36 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 00:00Z, 11.0 hours before the alert went out and 169 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.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2017-03-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 66 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2017-03-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 411 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
66 J/kg
Mixed-layer CIN
-155 J/kg
Mixed-layer LCL
832 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
411 m²/s²
0-3 km storm-relative helicity
386 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

465 
WWUS20 KWNS 011054
SEL3  
SPC WW 011054
INZ000-KYZ000-OHZ000-TNZ000-011600-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 53
NWS Storm Prediction Center Norman OK
455 AM CST Wed Mar 1 2017

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Southeast Indiana
  Central Kentucky
  Southwest Ohio
  Middle Tennessee

* Effective this Wednesday morning from 455 AM until 1000 AM CST.

* Primary threats include...
  A couple tornadoes possible
  Widespread damaging winds likely with isolated significant gusts
    to 80 mph possible
  Isolated large hail events to 1.5 inches in diameter possible

SUMMARY...A fast-moving squall line will race eastward at roughly 60
mph across middle Tennessee, central Kentucky, and southwest Ohio
through the morning.  Widespread damaging winds can be expected,
along with some tornado risk with embedded circulations in the line.

The tornado watch area is approximately along and 90 statute miles
east and west of a line from 10 miles north of Cincinnati OH to 85
miles south southwest of Nashville TN. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU3).

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...CONTINUE...WW 49...WW 51...WW 52...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 450. Mean
storm motion vector 26060.

...Thompson

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 28, 7:00 PM ESTMesoscale DiscussionSPCAdams, Allen, Cass, DeKalb, Elkhart, Fulton and 14 more90 min
Feb 28, 7:37 PM ESTSevere Thunderstorm WatchSPCAllen, DeKalb, Elkhart, Fulton, Kosciusko, LaGrange and 8 more8 hr
Feb 28, 8:46 PM ESTMesoscale DiscussionSPCBrown, Crawford, Daviess, Dubois, Gibson, Greene and 14 more119 min
Feb 28, 9:29 PM ESTTornado WatchSPCBartholomew, Brown, Clark, Clay, Crawford, Daviess and 34 more12 hr
Feb 28, 9:41 PM ESTMesoscale DiscussionSPCAllen, DeKalb, Elkhart, Fulton, Kosciusko, LaGrange and 9 more94 min
Feb 28, 10:51 PM ESTTornado WatchSPCBenton, Jasper, Lake, Newton, Porter6 hr
Feb 28, 11:03 PM ESTMesoscale DiscussionSPCAdams, Allen, Bartholomew, Blackford, Boone, Carroll and 48 more117 min
Feb 28, 11:09 PM ESTMesoscale DiscussionSPCCrawford, Daviess, Dubois, Gibson, Knox, Lawrence and 6 more66 min
Feb 28, 11:29 PM ESTTornado WatchSPCAdams, Allen, Blackford, Boone, Carroll, Cass and 41 more8 hr
Mar 1, 12:52 AM ESTMesoscale DiscussionSPCBenton, Elkhart, Fulton, Jasper, LaPorte, Marshall and 7 more53 min
Mar 1, 1:44 AM ESTMesoscale DiscussionSPCAdams, Allen, Blackford, Boone, Carroll, Cass and 28 more61 min
Mar 1, 2:32 AM ESTMesoscale DiscussionSPCClark, Crawford, Dearborn, Dubois, Floyd, Harrison and 11 more88 min
Mar 1, 4:03 AM ESTTornado WatchSPCGibson, Pike, Posey, Spencer, Vanderburgh, Warrick5 hr
Mar 1, 5:19 AM ESTMesoscale DiscussionSPCHarrison, Perry, Posey, Spencer, Vanderburgh, Warrick56 min
Mar 1, 3:09 AM ESTMesoscale DiscussionSPCBallard, Caldwell, Calloway, Carlisle, Crittenden, Fulton and 6 more2 hr
Mar 1, 6:28 AM ESTMesoscale DiscussionSPCAdair, Allen, Anderson, Barren, Bath, Bell and 88 more2 hr
Mar 1, 6:48 AM ESTSevere Thunderstorm WatchSPCBoyd, Carter, Greenup5 hr
Mar 1, 7:47 AM ESTSevere Thunderstorm WatchSPCBath, Bell, Breathitt, Clay, Elliott, Estill and 28 more5 hr
Mar 1, 8:28 AM ESTMesoscale DiscussionSPCBell, Boyd, Breathitt, Carter, Clay, Clinton and 32 more92 min
Mar 1, 3:56 PM ESTMesoscale DiscussionSPCBoyd, Breathitt, Carter, Elliott, Floyd, Greenup and 8 more2 hr
Mar 1, 2:19 AM ESTMesoscale DiscussionSPCAshland, Ashtabula, Belmont, Carroll, Columbiana, Coshocton and 22 more86 min
Mar 1, 3:24 AM ESTSevere Thunderstorm WatchSPCAshland, Ashtabula, Crawford, Cuyahoga, Erie, Geauga and 22 more4 hr
Mar 1, 11:08 AM ESTMesoscale DiscussionSPCBedford, Bradley, Coffee, Franklin, Giles, Grundy and 11 more2 hr
Mar 1, 12:48 PM ESTTornado WatchSPCBledsoe, Blount, Bradley, Franklin, Hamilton, Knox and 12 more6 hr
Mar 1, 3:11 PM ESTMesoscale DiscussionSPCBradley, McMinn, Polk2 hr

Nearby

Tornado Watches in Kentucky, 2017Tornado Watches in Tennessee, 2017Tornado Watches in Indiana, 2017Every tornado watch in 2017

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.