Alert archive / Ohio / Flood Watches in 2011

Flood Watch 7, NWS Wilmington, OH

November 28, 201118 counties in Ohio; 10 counties in Kentucky; 8 counties in Indiana

NWS Wilmington, OH issued this flood watch at Nov 28, 2011, 11:49 AM EST for 18 counties in Ohio; 10 counties in Kentucky; 8 counties in Indiana. It took effect at Nov 28, 2011, 12:00 PM EST. It was in force for 22 hr.

The area

The counties it named.

The facts

Issued: Nov 28, 2011, 11:49 AM EST (16:49 UTC)
In effect from: Nov 28, 2011, 12:00 PM EST
Expired: Nov 29, 2011, 10:06 AM EST
In force: 22 hr
Issued by: NWS Wilmington, OH
Flood severity: None

All 36 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, Owen County, KY, Pendleton County, KY, Robertson County, KY, Auglaize County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Darke County, OH, Greene County, OH, Hamilton County, OH, Hardin County, OH, Logan County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Preble County, OH, Shelby County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 55 km from the middle of the area, began a volume at 16:51 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

Lincoln, IL (KILX), launched 12:00Z, 4.8 hours before the alert went out and 362 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 645 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: -38 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 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 flood watch went out at Nov 28, 11:38 AM EST, 11 minutes earlier.

Area forecast discussion, Nov 28, 11:38 AM EST, 11 minutes before

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Hazardous weather outlook, Nov 28, 5:00 AM EST, 6 hours 49 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 28, 4:24 PM EST	River Flood Warning	ILN	Pickaway	4 days
Nov 28, 4:24 PM EST	River Flood Warning	ILN	Hamilton	25 hr

Nearby

Flood Watches in Ohio, 2011 Flood Watches in Kentucky, 2011 Flood Watches in Indiana, 2011 Every flood watch 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.