Alert archive / Ohio / Freeze Warnings in 2018

Freeze Warning 11, NWS Charleston, WV

October 17, 20184 counties in West Virginia; 6 counties in Ohio

NWS Charleston, WV issued this freeze warning at Oct 17, 2018, 6:34 AM EDT for 4 counties in West Virginia; 6 counties in Ohio. It took effect at Oct 18, 2018, 1:00 AM EDT. It was in force for 9 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: Oct 17, 2018, 6:34 AM EDT (10:34 UTC)
In effect from: Oct 18, 2018, 1:00 AM EDT
Expired: Oct 18, 2018, 10:00 AM EDT
In force: 9 hr
Issued by: NWS Charleston, WV

Counties Athens County, OH, Jackson County, OH, Morgan County, OH, Perry County, OH, Vinton County, OH, Washington County, OH, Nicholas County, WV, Pocahontas County, WV, Randolph County, WV, Webster County, WV

The radar

The Charleston,WV radar (KRLX), 85 km from the middle of the area, began a volume at 10:33 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, 10.6 hours before the alert went out and 213 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: 1444 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 108 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 Charleston, WV wrote its last area forecast discussion before this freeze warning went out at Oct 17, 6:27 AM EDT, 7 minutes earlier.

Area forecast discussion, Oct 17, 6:27 AM EDT, 7 minutes before

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Hazardous weather outlook, Oct 17, 3:25 AM EDT, 3 hours 9 minutes before

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The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 17, 3:18 AM EDT	Frost Advisory	RLX	Barbour, Boone, Braxton, Cabell, Calhoun, Clay and 25 more	31 hr
Oct 17, 3:18 AM EDT	Freeze Watch	RLX	Fayette, Jackson, Nicholas, Pleasants, Pocahontas, Raleigh and 6 more	11 hr

Nearby

Freeze Warnings in Ohio, 2018 Freeze Warnings in West Virginia, 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.