Alert archive / Ohio / Flood Watches in 2011

Flood Watch 1, NWS Wilmington, OH

February 23, 201115 counties in Ohio; 12 counties in Kentucky; 4 counties in Indiana

NWS Wilmington, OH issued this flood watch at Feb 23, 2011, 4:01 AM EST for 15 counties in Ohio; 12 counties in Kentucky; 4 counties in Indiana. It took effect at Feb 24, 2011, 7:00 AM EST. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued: Feb 23, 2011, 4:01 AM EST (09:01 UTC)
In effect from: Feb 24, 2011, 7:00 AM EST
Expired: Feb 25, 2011, 4:10 AM EST
In force: 21 hr
Issued by: NWS Wilmington, OH
Flood severity: None

All 31 counties

Dearborn County, IN, Ohio County, IN, Ripley County, IN, Switzerland 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, Brown County, OH, Butler County, OH, Clermont County, OH, Clinton County, OH, Fairfield County, OH, Fayette County, OH, Hamilton County, OH, Highland County, OH, Hocking County, OH, Pickaway County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 49 km from the middle of the area, began a volume at 09:04 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 00:00Z, 9.0 hours before the alert went out and 51 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: 568 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 131 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 Feb 23, 12:54 AM EST, 3 hours 7 minutes earlier.

Area forecast discussion, Feb 23, 12:54 AM EST, 3 hours 7 minutes before

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Hazardous weather outlook, Feb 22, 4:45 PM EST, 11 hours 16 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
Feb 23, 3:44 PM EST	Winter Storm Watch	ILN	Auglaize, Hardin, Logan, Mercer, Shelby	12 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.