Alert archive / Kentucky / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 61, NWS Louisville, KY

April 8, 2020Harrison County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Apr 8, 2020, 1:22 PM EDT for Harrison County, Kentucky. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 8, 2020, 1:22 PM EDT (17:22 UTC)
Expired: Apr 8, 2020, 2:00 PM EDT
In force: 38 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Harrison County, KY

The radar

The Cincinnati radar (KILN), 117 km from the middle of the area, began a volume at 17:24 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 8, 1:10 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 5.4 hours before the alert went out and 119 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: 1055 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 756 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Louisville, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 8, 11:46 AM EDT, 1 hour 36 minutes earlier.

Area forecast discussion, Apr 8, 11:46 AM EDT, 1 hour 36 minutes before

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Hazardous weather outlook, Apr 8, 3:40 AM EDT, 9 hours 42 minutes before

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In the hours before

Special weather statement, Apr 8, 12:45 PM EDT, 37 minutes before

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The office that day

Everything else NWS Louisville, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 8, 2:14 PM EDT	Special Weather Statement	LMK	Harrison	31 min
Apr 8, 2:26 PM EDT	Severe Thunderstorm Warning	LMK	Bourbon, Harrison, Scott	34 min
Apr 8, 2:36 PM EDT	Special Weather Statement	LMK	Nicholas	24 min
Apr 8, 3:06 PM EDT	Special Weather Statement	LMK	Woodford	24 min
Apr 8, 3:17 PM EDT	Special Weather Statement	LMK	Clark	28 min
Apr 8, 4:00 PM EDT	Special Weather Statement	LMK	Fayette	30 min
Apr 8, 4:19 PM EDT	Severe Thunderstorm Warning	LMK	Clark, Fayette, Madison	26 min
Apr 8, 4:46 PM EDT	Severe Thunderstorm Warning	LMK	Clark, Madison	29 min
Apr 8, 5:20 PM EDT	Special Weather Statement	LMK	Madison	10 min
Apr 8, 5:57 PM EDT	Special Weather Statement	LMK	Hart	33 min
Apr 8, 6:01 PM EDT	Severe Thunderstorm Warning	LMK	Grayson, Hardin, Hart	29 min
Apr 8, 6:19 PM EDT	Severe Thunderstorm Warning	LMK	Hart, Larue	26 min
Apr 8, 6:31 PM EDT	Special Weather Statement	LMK	Hart	29 min
Apr 8, 7:22 PM EDT	Special Weather Statement	LMK	Madison	23 min
Apr 8, 12:45 PM EDT	Special Weather Statement	LMK	Jefferson	15 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2020 Every severe thunderstorm warning 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.