Alert archive / Kentucky / Mesoscale Discussions in 2023

Mesoscale Discussion 704

May 7, 20234 states

The Storm Prediction Center issued this mesoscale discussion at May 7, 2023, 9:28 AM EDT for 4 states. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued
May 7, 2023, 9:28 AM EDT (13:28 UTC)
Expired
May 7, 2023, 11:00 AM EDT
In force
92 min
Issued by
the Storm Prediction Center
Concerning
Severe potential...watch unlikely
Chance of a watch
20%
All 98 counties

Clark County, IN, Floyd County, IN, Harrison County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Bell 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, Carroll County, KY, Carter County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Cumberland 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, Knott County, KY, Knox County, KY, Larue County, KY, Laurel County, KY, Lawrence County, KY, Lee County, KY, Leslie County, KY, Lewis County, KY, Lincoln County, KY, Madison County, KY, Magoffin County, KY, Marion County, KY, Martin County, KY, Mason County, KY, McCreary County, KY, Meade County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Monroe 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, Perry County, KY, Powell County, KY, Pulaski County, KY, Robertson County, KY, Rockcastle County, KY, Rowan 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, Wayne County, KY, Whitley County, KY, Wolfe County, KY, Woodford County, KY, Adams County, OH, Scioto County, OH, Clay County, TN, Pickett County, TN

The radar

The Louisville radar (KLVX), 102 km from the middle of the area, began a volume at 13:27 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 1.5 hours before the alert went out and 205 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 2023-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2023-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
682 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
218 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
May 7, 3:21 AM EDTMesoscale DiscussionSPCClay, Greene, Monroe, Morgan, Owen, Parke and 3 more114 min
May 7, 5:05 AM EDTMesoscale DiscussionSPCVigo85 min
May 7, 2:18 PM EDTSevere Thunderstorm WatchSPCGibson, Posey, Vanderburgh10 hr
May 7, 4:40 PM EDTMesoscale DiscussionSPCPosey65 min
May 7, 7:40 PM EDTMesoscale DiscussionSPCBenton, Jasper, Newton65 min
May 7, 7:58 PM EDTSevere Thunderstorm WatchSPCBenton, Jasper, Newton5 hr
May 7, 2:00 PM EDTMesoscale DiscussionSPCBallard, Caldwell, Calloway, Carlisle, Crittenden, Graves and 6 more2 hr
May 7, 2:21 PM EDTMesoscale DiscussionSPCAllen, Logan, Simpson, Warren84 min
May 7, 3:28 PM EDTMesoscale DiscussionSPCBenton, Carroll, Cheatham, Davidson, Dickson, Henry and 8 more2 hr
May 7, 5:31 PM EDTMesoscale DiscussionSPCBledsoe, Blount, Bradley, Cocke, Cumberland, Grundy and 17 more119 min

Nearby

Mesoscale Discussions in Kentucky, 2023Mesoscale Discussions in Indiana, 2023Mesoscale Discussions in Ohio, 2023Every mesoscale discussion in 2023

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.