Alert archive / Ohio / Flash Flood Watches in 2016

Flash Flood Watch 6, NWS Wilmington, OH

August 12, 201632 counties in Ohio; 12 counties in Kentucky; 8 counties in Indiana

NWS Wilmington, OH issued this flash flood watch at Aug 12, 2016, 9:08 AM EDT for 32 counties in Ohio; 12 counties in Kentucky; 8 counties in Indiana. It took effect at Aug 13, 2016, 2:00 PM EDT. It was in force for 26 hr.

The area

The counties it named.

The facts

Issued: Aug 12, 2016, 9:08 AM EDT (13:08 UTC)
In effect from: Aug 13, 2016, 2:00 PM EDT
Expired: Aug 14, 2016, 3:43 PM EDT
In force: 26 hr
Issued by: NWS Wilmington, OH
Flood severity: None

All 52 counties

Dearborn County, IN, Fayette County, IN, Franklin County, IN, Ohio County, IN, Ripley County, IN, Switzerland County, IN, Union County, IN, Wayne County, IN, Boone County, KY, Bracken County, KY, Campbell County, KY, Carroll County, KY, Gallatin County, KY, Grant County, KY, Kenton County, KY, Lewis County, KY, Mason County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY, Adams County, OH, Auglaize County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Darke County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Greene County, OH, Hamilton County, OH, Hardin County, OH, Highland County, OH, Hocking County, OH, Licking County, OH, Logan County, OH, Madison County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Pickaway County, OH, Pike County, OH, Preble County, OH, Ross County, OH, Scioto County, OH, Shelby County, OH, Union County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 20 km from the middle of the area, began a volume at 13:13 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

Detroit, MI (KDTX), launched 12:00Z, 1.1 hours before the alert went out and 369 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: 1934 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 603 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: -1 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 Wilmington, OH wrote its last area forecast discussion before this flash flood watch went out at Aug 12, 6:49 AM EDT, 2 hours 19 minutes earlier.

Area forecast discussion, Aug 12, 6:49 AM EDT, 2 hours 19 minutes before

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Hazardous weather outlook, Aug 12, 5:03 AM EDT, 4 hours 5 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 12, 9:21 AM EDT	Heat Advisory	ILN	Adams, Auglaize, Brown, Butler, Champaign, Clark and 26 more	10 hr
Aug 12, 4:48 PM EDT	Special Weather Statement	ILN	Union	27 min
Aug 12, 4:56 PM EDT	Special Weather Statement	ILN	Union	34 min
Aug 12, 5:08 PM EDT	Special Weather Statement	ILN	Hardin	37 min
Aug 12, 5:22 PM EDT	Special Weather Statement	ILN	Delaware	23 min
Aug 12, 5:44 PM EDT	Special Weather Statement	ILN	Delaware	31 min
Aug 12, 5:45 PM EDT	Special Weather Statement	ILN	Shelby	30 min
Aug 12, 6:25 PM EDT	Special Weather Statement	ILN	Hardin	35 min

Nearby

Flash Flood Watches in Ohio, 2016 Flash Flood Watches in Kentucky, 2016 Flash Flood Watches in Indiana, 2016 Every flash flood watch in 2016

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.