Alert archive / Kentucky / Areal Flood Warnings in 2021

Areal Flood Warning 22, NWS Louisville, KY

July 1, 2021Bullitt County, Jefferson County, Spencer County, Kentucky

NWS Louisville, KY issued this areal flood warning at Jul 1, 2021, 3:42 PM EDT for Bullitt County, Jefferson County, Spencer County, Kentucky. It was in force for 2 hr. 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 1, 2021, 3:42 PM EDT (19:42 UTC)
Expired: Jul 1, 2021, 5:46 PM EDT
In force: 2 hr
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Flood severity: None

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 19:43 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, 7.7 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: 133 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 627 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -47 m²/s²
0-3 km storm-relative helicity: -20 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood 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 areal flood warning went out at Jul 1, 2:54 PM EDT, 48 minutes earlier.

Area forecast discussion, Jul 1, 2:54 PM EDT, 48 minutes before

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Hazardous weather outlook, Jul 1, 3:21 PM EDT, 21 minutes before

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In the hours before

Local storm report, Jul 1, 2:29 PM EDT, 1 hour 13 minutes before

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Local storm report, Jul 1, 2:32 PM EDT, 1 hour 10 minutes before

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Local storm report, Jul 1, 2:35 PM EDT, 1 hour 7 minutes before

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Local storm report, Jul 1, 2:55 PM EDT, 47 minutes before

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Local storm report, Jul 1, 3:04 PM EDT, 38 minutes before

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Local storm report, Jul 1, 3:12 PM EDT, 30 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
Jun 30, 11:07 PM EDT	Special Weather Statement	LMK	Fayette, Jessamine	23 min
Jun 30, 11:28 PM EDT	Special Weather Statement	LMK	Clark	47 min
Jun 30, 11:36 PM EDT	Special Weather Statement	LMK	Bourbon	39 min
Jul 1, 12:07 AM EDT	Special Weather Statement	LMK	Nicholas	23 min
Jul 1, 12:12 AM EDT	Special Weather Statement	LMK	Lincoln	33 min
Jul 1, 3:57 AM EDT	Flash Flood Watch	LMK	Adair, Anderson, Bourbon, Boyle, Bullitt, Casey and 24 more	16 hr
Jul 1, 7:36 AM EDT	Areal Flood Advisory	LMK	Clark, Fayette, Jessamine	3 hr
Jul 1, 8:28 AM EDT	Flash Flood Warning	LMK	Clark, Fayette, Jessamine	7 hr
Jul 1, 9:00 AM EDT	Areal Flood Advisory	LMK	Boyle, Garrard, Jessamine, Mercer	3 hr
Jul 1, 9:33 AM EDT	Flash Flood Warning	LMK	Clark, Garrard, Jessamine, Madison, Mercer	6 hr
Jul 1, 11:47 AM EDT	Areal Flood Advisory	LMK	Jefferson	3 hr
Jul 1, 11:55 AM EDT	Flash Flood Warning	LMK	Boyle, Marion, Mercer, Washington	4 hr
Jul 1, 12:22 PM EDT	Areal Flood Advisory	LMK	Bullitt, Jefferson, Spencer	3 hr
Jul 1, 12:31 PM EDT	Flash Flood Warning	LMK	Bullitt, Jefferson, Spencer	3 hr
Jul 1, 12:51 PM EDT	Areal Flood Advisory	LMK	Garrard, Lincoln, Madison	4 hr
Jul 1, 1:05 PM EDT	Areal Flood Advisory	LMK	Anderson, Mercer, Spencer, Washington	3 hr
Jul 1, 1:18 PM EDT	Areal Flood Advisory	LMK	Bullitt, Nelson, Spencer	3 hr
Jul 1, 1:51 PM EDT	Flash Flood Warning	LMK	Anderson, Mercer, Washington	3 hr
Jul 1, 2:17 PM EDT	Flash Flood Warning	LMK	Garrard, Lincoln, Madison	3 hr
Jul 1, 3:23 PM EDT	Areal Flood Warning	LMK	Clark, Fayette, Jessamine	2 hr
Jul 1, 3:26 PM EDT	Areal Flood Warning	LMK	Clark, Garrard, Jessamine, Madison, Mercer	3 hr
Jul 1, 3:39 PM EDT	Areal Flood Warning	LMK	Boyle, Marion, Mercer, Washington	3 hr
Jul 1, 4:54 PM EDT	Areal Flood Warning	LMK	Anderson, Mercer, Washington	97 min
Jul 1, 6:43 PM EDT	River Flood Warning	LMK	Bourbon	28 hr
Jul 1, 12:12 PM EDT	Areal Flood Advisory	LMK	Perry	3 hr

Nearby

Areal Flood Warnings in Kentucky, 2021 Every areal flood warning in 2021

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.