Alert archive / Indiana / Flash Flood Watches in 2018

Flash Flood Watch 5, NWS Louisville, KY

June 12, 2018Breckinridge County, Hancock County, Meade County, Kentucky; 9 counties in Indiana

NWS Louisville, KY issued this flash flood watch at Jun 12, 2018, 1:11 PM CDT for Breckinridge County, Hancock County, Meade County, Kentucky; 9 counties in Indiana. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Jun 12, 2018, 1:11 PM CDT (18:11 UTC)
Expired: Jun 12, 2018, 7:46 PM CDT
In force: 7 hr
Issued by: NWS Louisville, KY
Flood severity: None

Counties Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Orange County, IN, Perry County, IN, Scott County, IN, Washington County, IN, Breckinridge County, KY, Hancock County, KY, Meade County, KY

The radar

The Louisville radar (KLVX), 44 km from the middle of the area, began a volume at 18:12 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 12:00Z, 6.2 hours before the alert went out and 239 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: 1248 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 676 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: -6 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 flash flood watch 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 flash flood watch went out at Jun 12, 12:46 PM CDT, 25 minutes earlier.

Area forecast discussion, Jun 12, 12:46 PM CDT, 25 minutes before

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Hazardous weather outlook, Jun 12, 11:23 AM CDT, 1 hour 48 minutes before

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In the hours before

Local storm report, Jun 12, 10:00 AM CDT, 3 hours 11 minutes before

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Local storm report, Jun 12, 11:22 AM CDT, 1 hour 49 minutes before

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Special weather statement, Jun 12, 11:45 AM CDT, 1 hour 26 minutes before

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Special weather statement, Jun 12, 12:09 PM CDT, 1 hour 2 minutes before

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Special weather statement, Jun 12, 12:41 PM CDT, 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 11, 8:08 PM CDT	Special Weather Statement	LMK	Barren	37 min
Jun 11, 9:02 PM CDT	Special Weather Statement	LMK	Hart	28 min
Jun 11, 9:59 PM CDT	Areal Flood Advisory	LMK	Green	2 hr
Jun 11, 11:18 PM CDT	Special Weather Statement	LMK	Jefferson	27 min
Jun 11, 11:20 PM CDT	Special Weather Statement	LMK	Garrard, Lincoln	25 min
Jun 12, 11:45 AM CDT	Special Weather Statement	LMK	Spencer	30 min
Jun 12, 12:09 PM CDT	Special Weather Statement	LMK	Anderson	36 min
Jun 12, 12:41 PM CDT	Special Weather Statement	LMK	Scott, Woodford	49 min
Jun 12, 1:22 PM CDT	Special Weather Statement	LMK	Bourbon	38 min
Jun 12, 1:28 PM CDT	Areal Flood Advisory	LMK	Bourbon, Nicholas	2 hr
Jun 12, 1:54 PM CDT	Special Weather Statement	LMK	Ohio	36 min
Jun 12, 2:37 PM CDT	Special Weather Statement	LMK	Ohio	38 min
Jun 12, 3:18 PM CDT	Special Weather Statement	LMK	Breckinridge	42 min
Jun 12, 3:34 PM CDT	Special Weather Statement	LMK	Grayson	26 min
Jun 12, 3:43 PM CDT	Severe Thunderstorm Warning	LMK	Breckinridge, Hardin, Meade	47 min
Jun 12, 4:06 PM CDT	Special Weather Statement	LMK	Edmonson, Grayson	39 min
Jun 12, 4:22 PM CDT	Special Weather Statement	LMK	Hardin, Meade	23 min
Jun 12, 4:56 PM CDT	Special Weather Statement	LMK	Hardin	34 min
Jun 12, 4:59 PM CDT	Special Weather Statement	LMK	Bullitt, Nelson	31 min
Jun 12, 5:18 PM CDT	Special Weather Statement	LMK	Hancock	42 min
Jun 12, 5:23 PM CDT	Special Weather Statement	LMK	Bullitt, Larue, Nelson, Spencer	37 min
Jun 12, 5:30 PM CDT	Severe Thunderstorm Warning	LMK	Bullitt, Hardin, Larue, Nelson	30 min
Jun 12, 5:36 PM CDT	Severe Thunderstorm Warning	LMK	Hardin, Larue	9 min
Jun 12, 5:50 PM CDT	Special Weather Statement	LMK	Spencer	25 min
Jun 12, 5:55 PM CDT	Special Weather Statement	LMK	Nelson	35 min
Jun 12, 6:00 PM CDT	Special Weather Statement	LMK	Breckinridge, Hancock, Ohio	45 min
Jun 12, 6:10 PM CDT	Severe Thunderstorm Warning	LMK	Breckinridge, Hancock, Ohio	35 min
Jun 12, 6:15 PM CDT	Special Weather Statement	LMK	Anderson, Boyle, Franklin, Marion, Mercer, Taylor and 2 more	45 min
Jun 12, 6:29 PM CDT	Severe Thunderstorm Warning	LMK	Anderson, Mercer, Washington	31 min
Jun 12, 6:37 PM CDT	Areal Flood Advisory	LMK	Anderson, Mercer, Washington	113 min
Jun 12, 6:42 PM CDT	Special Weather Statement	LMK	Breckinridge, Ohio	63 min
Jun 12, 6:58 PM CDT	Special Weather Statement	LMK	Boyle, Mercer	47 min
Jun 11, 10:20 PM CDT	Special Weather Statement	LMK	Dubois, Perry	55 min
Jun 12, 2:41 AM CDT	Flash Flood Watch	LMK	Clark, Dubois, Orange, Scott, Washington	10 hr
Jun 12, 8:52 AM CDT	Flash Flood Warning	LMK	Dubois	3 hr
Jun 12, 10:04 AM CDT	Areal Flood Advisory	LMK	Dubois	3 hr
Jun 12, 4:34 PM CDT	Special Weather Statement	LMK	Dubois	41 min

Nearby

Flash Flood Watches in Indiana, 2018 Flash Flood Watches in Kentucky, 2018 Every flash flood watch in 2018

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.