Alert archive / Kentucky / Mesoscale Discussions in 2016

Mesoscale Discussion 1673

September 10, 20165 states

The Storm Prediction Center issued this mesoscale discussion at Sep 10, 2016, 1:16 PM EDT for 5 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Sep 10, 2016, 1:16 PM EDT (17:16 UTC)
Expired
Sep 10, 2016, 3:45 PM EDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
80%
All 145 counties

Clark County, IN, Crawford County, IN, Dearborn County, IN, Floyd County, IN, Franklin County, IN, Harrison County, IN, Jefferson County, IN, Jennings County, IN, Ohio County, IN, Perry County, IN, Ripley County, IN, Scott County, IN, Spencer County, IN, Switzerland County, IN, Union County, IN, Washington County, IN, Adair 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, Clark County, KY, Daviess 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, Hopkins 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, McLean County, KY, Meade County, KY, Mercer County, KY, Metcalfe 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, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Warren County, KY, Washington County, KY, Woodford County, KY, Chautauqua County, NY, Adams County, OH, Ashland County, OH, Ashtabula County, OH, Athens County, OH, Brown County, OH, Butler County, OH, Carroll County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Cuyahoga County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Geauga County, OH, Greene County, OH, Guernsey County, OH, Hamilton County, OH, Harrison County, OH, Highland County, OH, Hocking County, OH, Holmes County, OH, Huron County, OH, Jackson County, OH, Jefferson County, OH, Knox County, OH, Lake County, OH, Licking County, OH, Logan County, OH, Lorain County, OH, Madison County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Miami County, OH, Montgomery County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Portage County, OH, Preble County, OH, Richland County, OH, Ross County, OH, Scioto County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Vinton County, OH, Warren County, OH, Wayne County, OH, Crawford County, PA, Erie County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Warren County, PA

The radar

The Cincinnati radar (KILN), 129 km from the middle of the area, began a volume at 17:19 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 12:00Z, 5.3 hours before the alert went out and 127 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 12:00Z on 2016-09-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 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 12:00Z on 2016-09-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 square meters per square second.193958Sfc1 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
5 J/kg
Mixed-layer CIN
-258 J/kg
Mixed-layer LCL
1264 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Sep 9, 9:30 PM EDTMesoscale DiscussionSPCAllen, Bartholomew, Blackford, Boone, Brown, Carroll and 40 more60 min
Sep 9, 11:24 PM EDTMesoscale DiscussionSPCAdams, Allen, Blackford, Delaware, Fayette, Grant and 10 more96 min
Sep 10, 2:24 PM EDTSevere Thunderstorm WatchSPCClark, Dearborn, Floyd, Franklin, Harrison, Jefferson and 5 more5 hr
Sep 10, 2:05 PM EDTMesoscale DiscussionSPCCalloway, Graves, Hickman, Marshall, Trigg2 hr
Sep 10, 4:39 PM EDTMesoscale DiscussionSPCAdair, Allen, Anderson, Barren, Bourbon, Boyle and 39 more2 hr
Sep 10, 2:35 PM EDTMesoscale DiscussionSPCFranklin, Herkimer, Jefferson, Lewis, Oneida, Oswego and 2 more2 hr
Sep 10, 3:30 PM EDTSevere Thunderstorm WatchSPCAllegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 4 more6 hr
Sep 10, 4:38 PM EDTMesoscale DiscussionSPCCattaraugus, Chautauqua, Erie, Genesee, Niagara, Wyoming2 hr

Nearby

Mesoscale Discussions in Kentucky, 2016Mesoscale Discussions in Ohio, 2016Mesoscale Discussions in Indiana, 2016Every mesoscale discussion in 2016

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.