Alert archive / Ohio / Flood Watches in 2018

Flood Watch 2, NWS Wilmington, OH

February 15, 201824 counties in Ohio; Lewis County, Kentucky

NWS Wilmington, OH issued this flood watch at Feb 15, 2018, 3:44 AM EST for 24 counties in Ohio; Lewis County, Kentucky. It took effect at Feb 15, 2018, 4:00 PM EST. It was in force for 22 hr.

The area

The counties it named.

The facts

Issued: Feb 15, 2018, 3:44 AM EST (08:44 UTC)
In effect from: Feb 15, 2018, 4:00 PM EST
Expired: Feb 16, 2018, 2:00 PM EST
In force: 22 hr
Issued by: NWS Wilmington, OH
Flood severity: None

All 25 counties

Lewis County, KY, Adams County, OH, Brown County, OH, Champaign County, OH, Clark County, OH, Clinton County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Greene County, OH, Highland County, OH, Hocking County, OH, Licking County, OH, Logan County, OH, Madison County, OH, Miami County, OH, Montgomery County, OH, Pickaway County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Shelby County, OH, Union County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 40 km from the middle of the area, began a volume at 08:46 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

Pittsburgh, PA (KAGC), launched 00:00Z, 8.7 hours before the alert went out and 298 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: 465 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 595 m²/s²
0-3 km storm-relative helicity: 678 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 15, 3:40 AM EST, 4 minutes earlier.

Area forecast discussion, Feb 15, 3:40 AM EST, 4 minutes before

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Hazardous weather outlook, Feb 15, 3:42 AM EST, 2 minutes before

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In the hours before

Special weather statement, Feb 14, 10:10 PM EST, 5 hours 34 minutes before

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Nearby

Flood Watches in Ohio, 2018 Flood Watches in Kentucky, 2018 Every 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.