Alert archive / Ohio / Frost Advisories in 2023

Frost Advisory 6, NWS Cleveland, OH

May 17, 202323 counties in Ohio; Crawford County, Erie County, Pennsylvania

NWS Cleveland, OH issued this frost advisory at May 17, 2023, 9:47 AM EDT for 23 counties in Ohio; Crawford County, Erie County, Pennsylvania. It took effect at May 18, 2023, 12:00 AM EDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: May 17, 2023, 9:47 AM EDT (13:47 UTC)
In effect from: May 18, 2023, 12:00 AM EDT
Expired: May 18, 2023, 8:00 AM EDT
In force: 8 hr
Issued by: NWS Cleveland, OH

All 25 counties

Ashland County, OH, Ashtabula County, OH, Crawford County, OH, Cuyahoga County, OH, Geauga County, OH, Hancock County, OH, Holmes County, OH, Huron County, OH, Knox County, OH, Lake County, OH, Lorain County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Morrow County, OH, Portage County, OH, Richland County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Wayne County, OH, Wyandot County, OH, Crawford County, PA, Erie County, PA

The radar

The Cleveland radar (KCLE), 33 km from the middle of the area, began a volume at 13:48 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 (KPIT), launched 12:00Z, 1.8 hours before the alert went out and 170 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: 939 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: -100 m²/s²
0-3 km storm-relative helicity: -63 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 Cleveland, OH wrote its last area forecast discussion before this frost advisory went out at May 17, 6:38 AM EDT, 3 hours 9 minutes earlier.

Area forecast discussion, May 17, 6:38 AM EDT, 3 hours 9 minutes before

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Hazardous weather outlook, May 17, 3:33 AM EDT, 6 hours 14 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 2:35 PM EDT	Freeze Warning	CLE	Ashland, Ashtabula, Crawford, Geauga, Holmes, Knox and 11 more	17 hr

Nearby

Frost Advisories in Ohio, 2023 Frost Advisories in Pennsylvania, 2023 Every frost advisory in 2023

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.