Alert archive / Ohio / Freeze Warnings in 2018

Freeze Warning 10, NWS Wilmington, OH

April 29, 20187 counties in Ohio; Lewis County, Kentucky

NWS Wilmington, OH issued this freeze warning at Apr 29, 2018, 9:38 AM EDT for 7 counties in Ohio; Lewis County, Kentucky. It took effect at Apr 30, 2018, 1:00 AM EDT. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 29, 2018, 9:38 AM EDT (13:38 UTC)
In effect from: Apr 30, 2018, 1:00 AM EDT
Expired: Apr 30, 2018, 9:00 AM EDT
In force: 8 hr
Issued by: NWS Wilmington, OH

Counties Lewis County, KY, Fairfield County, OH, Hocking County, OH, Licking County, OH, Pickaway County, OH, Pike County, OH, Ross County, OH, Scioto County, OH

The radar

The Cincinnati radar (KILN), 81 km from the middle of the area, began a volume at 13:35 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 12:00Z, 1.6 hours before the alert went out and 79 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: 1593 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 51 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 freeze warning 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 freeze warning went out at Apr 28, 3:10 PM EDT, 18 hours 28 minutes earlier.

Area forecast discussion, Apr 28, 3:10 PM EDT, 18 hours 28 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
Apr 29, 9:38 AM EDT	Frost Advisory	ILN	Adams, Auglaize, Brown, Butler, Champaign, Clark and 19 more	23 hr

Nearby

Freeze Warnings in Ohio, 2018 Freeze Warnings in Kentucky, 2018 Every freeze warning 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.