Alert archive / Indiana / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 138, NWS Louisville, KY

July 12, 2020Meade County, Kentucky; Crawford County, Harrison County, Perry County, Indiana

NWS Louisville, KY issued this severe thunderstorm warning at Jul 12, 2020, 2:06 AM EDT for Meade County, Kentucky; Crawford County, Harrison County, Perry County, Indiana. It was in force for 24 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 12, 2020, 2:06 AM EDT (06:06 UTC)
Expired: Jul 12, 2020, 2:30 AM EDT
In force: 24 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Crawford County, IN, Harrison County, IN, Perry County, IN, Meade County, KY

The radar

The Louisville radar (KLVX), 40 km from the middle of the area, began a volume at 06:08 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

Nashville Metro, TN (KBNA), launched 00:00Z, 6.1 hours before the alert went out and 224 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: 124 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 1921 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 64 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 12, 1:35 AM EDT, 31 minutes earlier.

Area forecast discussion, Jul 12, 1:35 AM EDT, 31 minutes before

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Hazardous weather outlook, Jul 11, 10:38 PM EDT, 3 hours 28 minutes before

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In the hours before

Local storm report, Jul 12, 12:11 AM EDT, 1 hour 55 minutes before

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Special weather statement, Jul 12, 12:38 AM EDT, 1 hour 28 minutes before

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Local storm report, Jul 12, 12:52 AM EDT, 1 hour 14 minutes before

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Special weather statement, Jul 12, 1:07 AM EDT, 59 minutes before

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Special weather statement, Jul 12, 1:30 AM EDT, 36 minutes before

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Special weather statement, Jul 12, 1:59 AM EDT, 7 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 11, 8:00 PM EDT	Special Weather Statement	LMK	Jefferson, Oldham	30 min
Jul 11, 8:09 PM EDT	Severe Thunderstorm Warning	LMK	Bullitt, Jefferson, Oldham, Spencer	36 min
Jul 11, 8:31 PM EDT	Severe Thunderstorm Warning	LMK	Henry, Oldham, Shelby	29 min
Jul 11, 8:39 PM EDT	Special Weather Statement	LMK	Anderson	36 min
Jul 11, 8:40 PM EDT	Severe Thunderstorm Warning	LMK	Bullitt, Jefferson	35 min
Jul 11, 9:07 PM EDT	Special Weather Statement	LMK	Anderson, Mercer, Woodford	38 min
Jul 11, 9:17 PM EDT	Special Weather Statement	LMK	Bullitt, Meade, Nelson, Spencer	28 min
Jul 11, 9:36 PM EDT	Special Weather Statement	LMK	Franklin, Jessamine, Mercer, Woodford	24 min
Jul 11, 9:49 PM EDT	Severe Thunderstorm Warning	LMK	Boyle, Garrard, Jessamine, Mercer	26 min
Jul 11, 10:06 PM EDT	Severe Thunderstorm Warning	LMK	Garrard, Jessamine, Madison	39 min
Jul 11, 11:03 PM EDT	Special Weather Statement	LMK	Grayson	42 min
Jul 12, 12:09 AM EDT	Special Weather Statement	LMK	Ohio	36 min
Jul 12, 12:38 AM EDT	Special Weather Statement	LMK	Butler	37 min
Jul 12, 1:59 AM EDT	Special Weather Statement	LMK	Breckinridge, Hancock, Jefferson, Meade, Oldham	31 min
Jul 12, 2:32 AM EDT	Special Weather Statement	LMK	Meade	28 min
Jul 12, 2:41 AM EDT	Special Weather Statement	LMK	Bullitt, Jefferson, Oldham, Shelby, Spencer	34 min
Jul 12, 2:42 AM EDT	Special Weather Statement	LMK	Breckinridge, Hardin, Ohio	33 min
Jul 12, 3:11 AM EDT	Special Weather Statement	LMK	Edmonson, Grayson, Hart, Larue, Nelson, Taylor	34 min
Jul 12, 10:59 AM EDT	Severe Thunderstorm Warning	LMK	Hancock	46 min
Jul 12, 11:33 AM EDT	Special Weather Statement	LMK	Meade	57 min
Jul 12, 11:54 AM EDT	Severe Thunderstorm Warning	LMK	Breckinridge, Hardin, Meade	36 min
Jul 12, 12:03 PM EDT	Special Weather Statement	LMK	Ohio	42 min
Jul 12, 12:19 PM EDT	Special Weather Statement	LMK	Bullitt	41 min
Jul 12, 3:23 PM EDT	Special Weather Statement	LMK	Ohio	37 min
Jul 12, 3:56 PM EDT	Special Weather Statement	LMK	Butler	34 min
Jul 12, 4:29 PM EDT	Special Weather Statement	LMK	Bullitt	31 min
Jul 12, 4:43 PM EDT	Special Weather Statement	LMK	Butler	47 min
Jul 12, 4:55 PM EDT	Special Weather Statement	LMK	Bullitt	35 min
Jul 12, 5:00 PM EDT	Severe Thunderstorm Warning	LMK	Butler, Logan	30 min
Jul 12, 5:27 PM EDT	Special Weather Statement	LMK	Logan	33 min
Jul 12, 5:32 PM EDT	Special Weather Statement	LMK	Larue, Nelson	43 min
Jul 12, 6:01 PM EDT	Severe Thunderstorm Warning	LMK	Marion, Nelson, Washington	29 min
Jul 12, 6:12 PM EDT	Special Weather Statement	LMK	Logan	33 min
Jul 12, 6:16 PM EDT	Severe Thunderstorm Warning	LMK	Marion, Washington	29 min
Jul 12, 6:22 PM EDT	Special Weather Statement	LMK	Green, Taylor	38 min
Jul 12, 6:36 PM EDT	Special Weather Statement	LMK	Boyle	39 min
Jul 12, 6:42 PM EDT	Severe Thunderstorm Warning	LMK	Boyle, Lincoln, Mercer	22 min
Jul 12, 6:56 PM EDT	Special Weather Statement	LMK	Adair, Casey	49 min
Jul 12, 7:04 PM EDT	Special Weather Statement	LMK	Garrard	41 min
Jul 12, 7:08 PM EDT	Severe Thunderstorm Warning	LMK	Adair, Casey, Taylor	37 min
Jul 12, 7:39 PM EDT	Special Weather Statement	LMK	Lincoln	36 min
Jul 11, 8:50 PM EDT	Severe Thunderstorm Warning	LMK	Dubois, Orange	25 min
Jul 11, 9:00 PM EDT	Areal Flood Advisory	LMK	Crawford, Harrison	4 hr
Jul 11, 9:44 PM EDT	Special Weather Statement	LMK	Dubois	31 min
Jul 12, 1:07 AM EDT	Special Weather Statement	LMK	Dubois	23 min
Jul 12, 1:30 AM EDT	Special Weather Statement	LMK	Crawford, Dubois, Orange, Washington	30 min
Jul 12, 4:01 PM EDT	Special Weather Statement	LMK	Harrison	29 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2020 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.