Alert archive / Ohio / Frost Advisories in 2017

Frost Advisory 1, NWS Wilmington, OH

April 7, 201711 counties in Ohio; 10 counties in Kentucky; 8 counties in Indiana

NWS Wilmington, OH issued this frost advisory at Apr 7, 2017, 3:46 AM EDT for 11 counties in Ohio; 10 counties in Kentucky; 8 counties in Indiana. It took effect at Apr 8, 2017, 12:00 AM EDT. It was in force for .

The area

The counties it named.

The facts

Issued: Apr 7, 2017, 3:46 AM EDT (07:46 UTC)
In effect from: Apr 8, 2017, 12:00 AM EDT
Expired: Apr 7, 2017, 3:32 PM EDT
In force
Issued by: NWS Wilmington, OH

All 29 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, Butler County, OH, Clermont County, OH, Darke County, OH, Hamilton 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), 70 km from the middle of the area, began a volume at 07:51 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 00:00Z, 7.8 hours before the alert went out and 352 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: 1841 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 99 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 frost advisory 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 frost advisory went out at Apr 6, 7:26 PM EDT, 8 hours 20 minutes earlier.

Area forecast discussion, Apr 6, 7:26 PM EDT, 8 hours 20 minutes before

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Hazardous weather outlook, Apr 6, 3:17 PM EDT, 12 hours 29 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
Apr 7, 3:46 AM EDT	Freeze Warning	ILN	Adams, Auglaize, Brown, Butler, Champaign, Clark and 26 more	29 hr

Nearby

Frost Advisories in Ohio, 2017 Frost Advisories in Kentucky, 2017 Frost Advisories in Indiana, 2017 Every frost advisory in 2017

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.