Alert archive / Ohio / Winter Storm Warnings in 2020

Winter Storm Warning 6, NWS Pittsburgh, PA

December 24, 20205 counties in Pennsylvania; 11 counties in Ohio; 6 counties in West Virginia

NWS Pittsburgh, PA issued this winter storm warning at Dec 24, 2020, 3:48 AM EST for 5 counties in Pennsylvania; 11 counties in Ohio; 6 counties in West Virginia. It took effect at Dec 24, 2020, 4:00 PM EST. It was in force for 21 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: Dec 24, 2020, 3:48 AM EST (08:48 UTC)
In effect from: Dec 24, 2020, 4:00 PM EST
Expired: Dec 25, 2020, 1:00 PM EST
In force: 21 hr
Issued by: NWS Pittsburgh, PA

All 22 counties

Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Guernsey County, OH, Harrison County, OH, Jefferson County, OH, Monroe County, OH, Muskingum County, OH, Noble County, OH, Tuscarawas County, OH, Beaver County, PA, Fayette County, PA, Lawrence County, PA, Mercer County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV, Monongalia County, WV, Ohio County, WV, Preston County, WV, Tucker County, WV

The radar

The Pittsburgh radar (KPBZ), 54 km from the middle of the area, began a volume at 08:48 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 8.8 hours before the alert went out and 279 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: 2395 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 485 m²/s²
0-3 km storm-relative helicity: 636 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 winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pittsburgh, PA wrote its last area forecast discussion before this winter storm warning went out at Dec 24, 12:24 AM EST, 3 hours 24 minutes earlier.

Area forecast discussion, Dec 24, 12:24 AM EST, 3 hours 24 minutes before

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Hazardous weather outlook, Dec 23, 12:40 PM EST, 15 hours 8 minutes before

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The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 24, 2:13 PM EST	River Flood Advisory	PBZ	Allegheny	40 hr

Nearby

Winter Storm Warnings in Ohio, 2020 Winter Storm Warnings in West Virginia, 2020 Winter Storm Warnings in Pennsylvania, 2020 Every winter storm warning in 2020

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.