Alert archive / Kentucky / Mesoscale Discussions in 2016

Mesoscale Discussion 525

May 1, 20164 states

The Storm Prediction Center issued this mesoscale discussion at May 1, 2016, 6:48 PM EDT for 4 states. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued
May 1, 2016, 6:48 PM EDT (22:48 UTC)
Expired
May 1, 2016, 8:15 PM EDT
In force
87 min
Issued by
the Storm Prediction Center
All 133 counties

Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Jefferson County, IN, Ohio County, IN, Orange County, IN, Perry County, IN, Scott County, IN, Spencer County, IN, Switzerland County, IN, Vanderburgh County, IN, Warrick County, IN, Washington 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, Caldwell County, KY, Calloway County, KY, Campbell County, KY, Carroll County, KY, Casey County, KY, Christian County, KY, Clark County, KY, Crittenden County, KY, Cumberland 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, Henderson 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, Lyon County, KY, Madison County, KY, Marion County, KY, Marshall County, KY, Mason County, KY, McLean 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, Russell County, KY, Scott County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Todd County, KY, Trigg County, KY, Trimble County, KY, Union County, KY, Warren County, KY, Washington County, KY, Webster County, KY, Woodford County, KY, Adams County, OH, Brown County, OH, Benton County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Clay County, TN, Crockett County, TN, Davidson County, TN, Decatur County, TN, Dickson County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Lawrence County, TN, Lewis County, TN, Macon County, TN, Madison County, TN, Maury County, TN, McNairy County, TN, Montgomery County, TN, Perry County, TN, Robertson County, TN, Rutherford County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Wayne County, TN, Weakley County, TN, Williamson County, TN, Wilson County, TN

The radar

The Ft Campbell radar (KHPX), 57 km from the middle of the area, began a volume at 22:48 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 nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.8 hours before the alert went out and 94 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 12:00Z on 2016-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 259 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 12:00Z on 2016-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.19395878Sfc1 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
259 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
732 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.3

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
May 1, 1:39 PM EDTMesoscale DiscussionSPCBartholomew, Brown, Clark, Crawford, Daviess, Dearborn and 33 more2 hr
May 1, 2:36 PM EDTSevere Thunderstorm WatchSPCClark, Crawford, Dubois, Floyd, Gibson, Harrison and 12 more6 hr
May 1, 6:06 PM EDTMesoscale DiscussionSPCBartholomew, Benton, Blackford, Boone, Brown, Carroll and 42 more114 min
May 1, 7:58 PM EDTSevere Thunderstorm WatchSPCBartholomew, Boone, Brown, Carroll, Clay, Clinton and 33 more4 hr
May 1, 2:11 PM EDTMesoscale DiscussionSPCButler, Calloway, Christian, Logan, Muhlenberg, Todd and 1 more64 min
May 1, 3:59 PM EDTMesoscale DiscussionSPCBoyd, Breathitt, Carter, Clay, Elliott, Floyd and 13 more61 min
May 1, 4:12 PM EDTSevere Thunderstorm WatchSPCBath, Boyd, Breathitt, Carter, Elliott, Estill and 20 more6 hr
May 1, 7:30 PM EDTMesoscale DiscussionSPCFloyd, Knott, Martin, Pike60 min

Nearby

Mesoscale Discussions in Kentucky, 2016Mesoscale Discussions in Tennessee, 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.