Alert archive / West Virginia / Winter Weather Advisories in 2021
Winter Weather Advisory 4, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this winter weather advisory at Jan 16, 2021, 3:19 AM EST for Fayette County, Westmoreland County, Pennsylvania; Monongalia County, Preston County, Tucker County, West Virginia. It took effect at Jan 16, 2021, 1:00 PM EST. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Jan 16, 2021, 3:19 AM EST (08:19 UTC)
- In effect from
- Jan 16, 2021, 1:00 PM EST
- Expired
- Jan 17, 2021, 7:00 AM EST
- In force
- 18 hr
- Issued by
- NWS Pittsburgh, PA
Counties Fayette County, PA, Westmoreland County, PA, Monongalia County, WV, Preston County, WV, Tucker County, WV
The radar
The Pittsburgh radar (KPBZ), 104 km from the middle of the area, began a volume at 08:17 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
Roanoke, VA (KRNK), launched 00:00Z, 8.3 hours before the alert went out and 277 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 914 m above ground
- 0-6 km bulk shear
- 95 kt
- 0-1 km storm-relative helicity
- -107 m²/s²
- 0-3 km storm-relative helicity
- -51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter weather advisory 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 weather advisory went out at Jan 16, 12:54 AM EST, 2 hours 25 minutes earlier.
Area forecast discussion, Jan 16, 12:54 AM EST, 2 hours 25 minutes before
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</html>Hazardous weather outlook, Jan 15, 2:06 PM EST, 13 hours 13 minutes before
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</html>The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 16, 8:51 AM EST | Special Weather Statement | PBZ | Allegheny, Beaver, Butler, Greene, Washington | 54 min |
| Jan 16, 10:07 AM EST | Special Weather Statement | PBZ | Allegheny, Beaver, Washington | 53 min |
| Jan 16, 11:07 AM EST | Special Weather Statement | PBZ | Allegheny, Butler | 53 min |
Nearby
Winter Weather Advisories in West Virginia, 2021Winter Weather Advisories in Pennsylvania, 2021Every winter weather advisory in 2021
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.