Alert archive / Kentucky / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 19, NWS Louisville, KY

January 11, 2020Clark County, Fayette County, Madison County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Jan 11, 2020, 1:26 PM EST for Clark County, Fayette County, Madison County, Kentucky. It was in force for 34 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: Jan 11, 2020, 1:26 PM EST (18:26 UTC)
Expired: Jan 11, 2020, 2:00 PM EST
In force: 34 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Clark County, KY, Fayette County, KY, Madison County, KY

The radar

The Jackson,KY radar (KJKL), 93 km from the middle of the area, began a volume at 18:30 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
Jan 11, 9:36 AM EST	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 6.4 hours before the alert went out and 174 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1025 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 776 m²/s²
0-3 km storm-relative helicity: 952 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jan 11, 12:59 PM EST, 27 minutes earlier.

Area forecast discussion, Jan 11, 12:59 PM EST, 27 minutes before

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Hazardous weather outlook, Jan 11, 11:52 AM EST, 1 hour 34 minutes before

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In the hours before

Local storm report, Jan 11, 12:34 PM EST, 52 minutes before

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Local storm report, Jan 11, 12:45 PM EST, 41 minutes before

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Local storm report, Jan 11, 1:12 PM EST, 14 minutes before

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Local storm report, Jan 11, 1:14 PM EST, 12 minutes before

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Local storm report, Jan 11, 1:16 PM EST, 10 minutes before

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Local storm report, Jan 11, 1:17 PM EST, 9 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
Jan 11, 8:57 AM EST	Severe Thunderstorm Warning	LMK	Butler, Logan, Ohio	33 min
Jan 11, 9:34 AM EST	Severe Thunderstorm Warning	LMK	Butler, Logan, Warren	26 min
Jan 11, 9:43 AM EST	Severe Thunderstorm Warning	LMK	Breckinridge, Meade	32 min
Jan 11, 9:52 AM EST	Severe Thunderstorm Warning	LMK	Breckinridge, Meade	23 min
Jan 11, 9:59 AM EST	Severe Thunderstorm Warning	LMK	Logan, Warren	31 min
Jan 11, 10:07 AM EST	Severe Thunderstorm Warning	LMK	Allen, Simpson, Warren	23 min
Jan 11, 10:17 AM EST	Severe Thunderstorm Warning	LMK	Edmonson, Grayson, Hart	28 min
Jan 11, 10:42 AM EST	Severe Thunderstorm Warning	LMK	Hardin, Larue	33 min
Jan 11, 11:17 AM EST	Severe Thunderstorm Warning	LMK	Allen, Barren, Hart	28 min
Jan 11, 11:19 AM EST	Areal Flood Advisory	LMK	Bullitt, Jefferson, Spencer	3 hr
Jan 11, 11:22 AM EST	Severe Thunderstorm Warning	LMK	Shelby, Spencer	23 min
Jan 11, 11:34 AM EST	Severe Thunderstorm Warning	LMK	Green, Hart, Larue, Metcalfe, Taylor	26 min
Jan 11, 11:56 AM EST	Severe Thunderstorm Warning	LMK	Larue, Marion, Nelson, Taylor, Washington	34 min
Jan 11, 12:30 PM EST	Severe Thunderstorm Warning	LMK	Clinton, Cumberland	30 min
Jan 11, 1:05 PM EST	Severe Thunderstorm Warning	LMK	Bourbon, Fayette, Harrison, Nicholas, Scott	25 min
Jan 11, 1:06 PM EST	Severe Thunderstorm Warning	LMK	Boyle, Clark, Garrard, Jessamine, Lincoln, Madison	39 min
Jan 11, 1:35 PM EST	Areal Flood Advisory	LMK	Simpson, Warren	4 hr
Jan 11, 1:45 PM EST	Severe Thunderstorm Warning	LMK	Clark	15 min
Jan 11, 3:40 PM EST	Areal Flood Advisory	LMK	Allen, Barren, Metcalfe, Monroe, Simpson, Warren	3 hr
Jan 11, 5:01 PM EST	Areal Flood Advisory	LMK	Clinton, Cumberland, Metcalfe, Monroe	3 hr
Jan 11, 6:50 PM EST	Special Weather Statement	LMK	Allen, Barren, Simpson, Warren	40 min
Jan 11, 9:14 AM EST	Areal Flood Warning	LMK	Dubois	3 hr
Jan 11, 10:17 AM EST	Severe Thunderstorm Warning	LMK	Harrison	28 min
Jan 11, 10:20 AM EST	Areal Flood Warning	LMK	Crawford, Orange, Perry	3 hr
Jan 11, 10:36 AM EST	Severe Thunderstorm Warning	LMK	Clark, Floyd, Harrison, Washington	24 min
Jan 11, 10:57 AM EST	Severe Thunderstorm Warning	LMK	Clark, Jefferson, Scott	22 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.