Alert archive / Kentucky / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 157, NWS Louisville, KY

July 22, 2020Bullitt County, Jefferson County, Spencer County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Jul 22, 2020, 6:13 PM EDT for Bullitt County, Jefferson County, Spencer County, Kentucky. It was in force for 32 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: Jul 22, 2020, 6:13 PM EDT (22:13 UTC)
Expired: Jul 22, 2020, 6:45 PM EDT
In force: 32 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bullitt County, KY, Jefferson County, KY, Spencer County, KY

The radar

The Louisville radar (KLVX), 35 km from the middle of the area, began a volume at 22:14 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, 10.2 hours before the alert went out and 215 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: 7 J/kg
Mixed-layer CIN: -157 J/kg
Mixed-layer LCL: 1066 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 97 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 Jul 22, 2:59 PM EDT, 3 hours 14 minutes earlier.

Area forecast discussion, Jul 22, 2:59 PM EDT, 3 hours 14 minutes before

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Hazardous weather outlook, Jul 22, 3:13 PM EDT, 3 hours before

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In the hours before

Special weather statement, Jul 22, 4:57 PM EDT, 1 hour 16 minutes before

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Special weather statement, Jul 22, 5:14 PM EDT, 59 minutes before

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Special weather statement, Jul 22, 5:38 PM EDT, 35 minutes before

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Special weather statement, Jul 22, 5:45 PM EDT, 28 minutes before

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Local storm report, Jul 22, 6:04 PM EDT, 9 minutes before

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Special weather statement, Jul 22, 6:05 PM EDT, 8 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
Jul 21, 8:21 PM EDT	Special Weather Statement	LMK	Allen	24 min
Jul 21, 10:24 PM EDT	Special Weather Statement	LMK	Clinton	21 min
Jul 21, 10:34 PM EDT	Special Weather Statement	LMK	Jefferson	26 min
Jul 21, 10:42 PM EDT	Special Weather Statement	LMK	Cumberland	18 min
Jul 21, 10:55 PM EDT	Special Weather Statement	LMK	Oldham	20 min
Jul 21, 11:08 PM EDT	Areal Flood Advisory	LMK	Clinton, Cumberland	3 hr
Jul 22, 1:13 AM EDT	Special Weather Statement	LMK	Jefferson	32 min
Jul 22, 1:16 AM EDT	Special Weather Statement	LMK	Scott	29 min
Jul 22, 2:46 PM EDT	Special Weather Statement	LMK	Allen	44 min
Jul 22, 2:56 PM EDT	Special Weather Statement	LMK	Bullitt	34 min
Jul 22, 3:25 PM EDT	Special Weather Statement	LMK	Allen	35 min
Jul 22, 3:28 PM EDT	Special Weather Statement	LMK	Logan	47 min
Jul 22, 3:40 PM EDT	Special Weather Statement	LMK	Trimble	35 min
Jul 22, 3:41 PM EDT	Severe Thunderstorm Warning	LMK	Butler, Logan	34 min
Jul 22, 3:50 PM EDT	Special Weather Statement	LMK	Henry	25 min
Jul 22, 3:52 PM EDT	Special Weather Statement	LMK	Hardin	38 min
Jul 22, 4:05 PM EDT	Special Weather Statement	LMK	Oldham	25 min
Jul 22, 4:08 PM EDT	Severe Thunderstorm Warning	LMK	Butler, Warren	37 min
Jul 22, 4:13 PM EDT	Special Weather Statement	LMK	Simpson, Warren	47 min
Jul 22, 4:24 PM EDT	Special Weather Statement	LMK	Breckinridge	36 min
Jul 22, 4:31 PM EDT	Special Weather Statement	LMK	Henry	29 min
Jul 22, 4:42 PM EDT	Special Weather Statement	LMK	Grayson	33 min
Jul 22, 4:45 PM EDT	Special Weather Statement	LMK	Jefferson, Shelby	30 min
Jul 22, 4:57 PM EDT	Special Weather Statement	LMK	Warren	33 min
Jul 22, 5:14 PM EDT	Special Weather Statement	LMK	Grayson	31 min
Jul 22, 5:45 PM EDT	Special Weather Statement	LMK	Jefferson	30 min
Jul 22, 6:05 PM EDT	Special Weather Statement	LMK	Bullitt, Jefferson	25 min
Jul 22, 6:34 PM EDT	Special Weather Statement	LMK	Shelby	26 min
Jul 22, 6:46 PM EDT	Special Weather Statement	LMK	Shelby	14 min
Jul 22, 6:59 PM EDT	Special Weather Statement	LMK	Shelby	31 min
Jul 22, 7:06 PM EDT	Special Weather Statement	LMK	Casey	24 min
Jul 22, 7:30 PM EDT	Special Weather Statement	LMK	Lincoln	30 min
Jul 21, 11:45 PM EDT	Special Weather Statement	LMK	Dubois	30 min
Jul 22, 12:18 AM EDT	Special Weather Statement	LMK	Orange	27 min
Jul 22, 12:51 AM EDT	Special Weather Statement	LMK	Washington	24 min
Jul 22, 5:04 AM EDT	Special Weather Statement	LMK	Dubois	26 min
Jul 22, 5:31 AM EDT	Special Weather Statement	LMK	Dubois, Orange	29 min
Jul 22, 10:29 AM EDT	Special Weather Statement	LMK	Washington	46 min
Jul 22, 11:33 AM EDT	Special Weather Statement	LMK	Scott, Washington	42 min
Jul 22, 12:19 PM EDT	Special Weather Statement	LMK	Jefferson, Scott	41 min
Jul 22, 1:01 PM EDT	Special Weather Statement	LMK	Jefferson	44 min
Jul 22, 3:57 PM EDT	Special Weather Statement	LMK	Clark	33 min
Jul 22, 4:23 PM EDT	Special Weather Statement	LMK	Floyd	22 min
Jul 22, 5:38 PM EDT	Special Weather Statement	LMK	Dubois	37 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.