Alert archive / Kentucky / Mesoscale Discussions in 2020

Mesoscale Discussion 265

March 28, 2020Dearborn County, Ohio County, Switzerland County, Indiana; 48 counties in Kentucky; Brown County, Clermont County, Hamilton County, Ohio

The Storm Prediction Center issued this mesoscale discussion at Mar 28, 2020, 11:34 PM EDT for Dearborn County, Ohio County, Switzerland County, Indiana; 48 counties in Kentucky; Brown County, Clermont County, Hamilton County, Ohio. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued: Mar 28, 2020, 11:34 PM EDT (03:34 UTC)
Expired: Mar 29, 2020, 1:00 AM EDT
In force: 86 min
Issued by: the Storm Prediction Center

All 54 counties

Dearborn County, IN, Ohio County, IN, Switzerland County, IN, Adair County, KY, Anderson County, KY, Barren County, KY, Boone County, KY, Bourbon County, KY, Boyle County, KY, Bracken County, KY, Bullitt County, KY, Campbell County, KY, Carroll County, KY, Casey County, KY, Clark County, KY, Edmonson County, KY, Fayette County, KY, Fleming County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Green 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, Lincoln County, KY, Madison County, KY, Marion County, KY, Mason County, KY, Mercer County, KY, Metcalfe County, KY, Nelson County, KY, Nicholas 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, Brown County, OH, Clermont County, OH, Hamilton County, OH

The radar

The Louisville radar (KLVX), 66 km from the middle of the area, began a volume at 03:37 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 00:00Z, 3.6 hours before the alert went out and 197 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 557 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1072 m above ground
0-6 km bulk shear: 78 kt
0-1 km storm-relative helicity: 183 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 4.0

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.

Issued	Product	Office	Counties	Lasted
Mar 28, 8:38 PM EDT	Mesoscale Discussion	SPC	Crawford, Floyd, Harrison, Perry, Spencer	67 min
Mar 28, 9:15 PM EDT	Tornado Watch	SPC	Clark, Crawford, Dubois, Floyd, Harrison, Jefferson and 4 more	6 hr
Mar 28, 10:23 PM EDT	Mesoscale Discussion	SPC	Bartholomew, Blackford, Brown, Dearborn, Decatur, Delaware and 20 more	97 min
Mar 29, 2:50 AM EDT	Mesoscale Discussion	SPC	Clinton, Wayne	85 min
Mar 29, 12:05 PM EDT	Severe Thunderstorm Watch	SPC	Ashtabula, Columbiana, Mahoning, Trumbull	4 hr

Nearby

Mesoscale Discussions in Kentucky, 2020 Mesoscale Discussions in Indiana, 2020 Mesoscale Discussions in Ohio, 2020 Every mesoscale discussion in 2020

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.