Alert archive / Indiana / Areal Flood Warnings in 2011

Areal Flood Warning 9, NWS Louisville, KY

April 25, 20118 counties in Kentucky; 10 counties in Indiana

NWS Louisville, KY issued this areal flood warning at Apr 25, 2011, 5:42 AM EDT for 8 counties in Kentucky; 10 counties in Indiana. It was in force for 5 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: Apr 25, 2011, 5:42 AM EDT (09:42 UTC)
Expired: Apr 25, 2011, 10:45 AM EDT
In force: 5 hr
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Flood severity: None

Counties Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Jefferson County, IN, Orange County, IN, Perry County, IN, Scott County, IN, Washington County, IN, Bullitt County, KY, Henry County, KY, Jefferson County, KY, Meade County, KY, Oldham County, KY, Shelby County, KY, Spencer County, KY, Trimble County, KY

The radar

The Louisville radar (KLVX), 42 km from the middle of the area, began a volume at 09:45 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, 9.7 hours before the alert went out and 255 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: 1210 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1316 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 5.7

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 Apr 25, 3:14 AM EDT, 2 hours 28 minutes earlier.

Area forecast discussion, Apr 25, 3:14 AM EDT, 2 hours 28 minutes before

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Hazardous weather outlook, Apr 25, 3:57 AM EDT, 1 hour 45 minutes before

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In the hours before

Local storm report, Apr 25, 2:43 AM EDT, 2 hours 59 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
Apr 24, 8:04 PM EDT	Special Weather Statement	LMK	Metcalfe	26 min
Apr 24, 8:09 PM EDT	Severe Thunderstorm Warning	LMK	Barren, Metcalfe	36 min
Apr 24, 8:16 PM EDT	Special Weather Statement	LMK	Green	29 min
Apr 24, 8:49 PM EDT	Special Weather Statement	LMK	Adair, Metcalfe	26 min
Apr 24, 8:52 PM EDT	Special Weather Statement	LMK	Taylor	23 min
Apr 24, 9:16 PM EDT	Special Weather Statement	LMK	Adair, Casey	29 min
Apr 24, 9:34 PM EDT	River Flood Warning	LMK	Bullitt	5 days
Apr 24, 9:57 PM EDT	River Flood Warning	LMK	Butler, Warren	16 days
Apr 24, 9:57 PM EDT	River Flood Warning	LMK	Butler, Muhlenberg, Ohio	24 days
Apr 24, 10:41 PM EDT	Special Weather Statement	LMK	Hart	34 min
Apr 25, 1:28 AM EDT	Areal Flood Warning	LMK	Breckinridge, Butler, Edmonson, Grayson, Green, Hancock and 9 more	9 hr
Apr 25, 1:55 AM EDT	River Flood Warning	LMK	Edmonson	8 hr
Apr 25, 10:28 AM EDT	Areal Flood Warning	LMK	Breckinridge, Bullitt, Grayson, Hancock, Hardin, Henry and 7 more	36 hr
Apr 25, 5:14 PM EDT	Special Weather Statement	LMK	Logan	61 min
Apr 25, 5:37 PM EDT	Special Weather Statement	LMK	Butler, Hancock, Ohio	53 min
Apr 25, 5:48 PM EDT	Severe Thunderstorm Warning	LMK	Butler, Logan, Ohio, Warren	27 min
Apr 25, 6:11 PM EDT	Severe Thunderstorm Warning	LMK	Breckinridge, Hancock, Ohio	34 min
Apr 25, 6:56 PM EDT	Flash Flood Warning	LMK	Henry	21 hr

Nearby

Areal Flood Warnings in Indiana, 2011 Areal Flood Warnings in Kentucky, 2011 Every areal flood warning in 2011

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.