Alert archive / Kentucky / Mesoscale Discussions in 2017

Mesoscale Discussion 235

March 1, 20174 states

The Storm Prediction Center issued this mesoscale discussion at Mar 1, 2017, 2:32 AM EST for 4 states. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued
Mar 1, 2017, 2:32 AM EST (07:32 UTC)
Expired
Mar 1, 2017, 4:00 AM EST
In force
88 min
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 127 counties

Clark County, IN, Crawford County, IN, Dearborn County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Jefferson County, IN, Jennings County, IN, Ohio County, IN, Orange County, IN, Perry County, IN, Ripley County, IN, Scott County, IN, Spencer County, IN, Switzerland County, IN, Warrick County, IN, Washington County, IN, Adair County, KY, Anderson County, KY, Bath County, KY, Boone County, KY, Bourbon County, KY, Boyd County, KY, Boyle County, KY, Bracken County, KY, Breathitt County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Campbell County, KY, Carroll County, KY, Carter County, KY, Casey County, KY, Clark County, KY, Daviess County, KY, Edmonson County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Floyd County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Grayson County, KY, Green County, KY, Greenup County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henry County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Johnson County, KY, Kenton County, KY, Larue County, KY, Lawrence County, KY, Lee County, KY, Lewis County, KY, Lincoln County, KY, Madison County, KY, Magoffin County, KY, Marion County, KY, Martin County, KY, Mason County, KY, Meade County, KY, Menifee County, KY, Mercer County, KY, Montgomery County, KY, Morgan County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Owen County, KY, Owsley County, KY, Pendleton County, KY, Powell County, KY, Robertson County, KY, Rockcastle County, KY, Rowan County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Washington County, KY, Wolfe County, KY, Woodford County, KY, Adams County, OH, Athens County, OH, Brown County, OH, Clermont County, OH, Clinton County, OH, Gallia County, OH, Hamilton County, OH, Highland County, OH, Hocking County, OH, Jackson County, OH, Lawrence County, OH, Meigs County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Vinton County, OH, Warren County, OH, Boone County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Fayette County, WV, Jackson County, WV, Kanawha County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, Mingo County, WV, Nicholas County, WV, Putnam County, WV, Ritchie County, WV, Roane County, WV, Wayne County, WV, Wirt County, WV, Wood County, WV

The radar

The Louisville radar (KLVX), 123 km from the middle of the area, began a volume at 07:34 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.

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 7.5 hours before the alert went out and 143 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, Cncnati-Daytn, OH at 00:00Z on 2017-03-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 126 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, Cncnati-Daytn, OH at 00:00Z on 2017-03-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 416 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
126 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
490 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
416 m²/s²
0-3 km storm-relative helicity
441 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted.

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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, 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, 5:57 AM ESTTornado WatchSPCClark, Crawford, Dearborn, Dubois, Floyd, Franklin and 9 more5 hr
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, 9:44 AM ESTMesoscale DiscussionSPCBerkeley, Grant, Greenbrier, Hampshire, Hardy, Jefferson and 7 more91 min
Mar 1, 10:38 AM ESTSevere Thunderstorm WatchSPCBerkeley, Grant, Greenbrier, Hampshire, Hardy, Jefferson and 6 more4 hr
Mar 1, 12:25 PM ESTMesoscale DiscussionSPCBerkeley, Hampshire, Jefferson, Morgan65 min

Nearby

Mesoscale Discussions in Kentucky, 2017Mesoscale Discussions in West Virginia, 2017Mesoscale Discussions in Indiana, 2017Every mesoscale discussion 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.