Alert archive / West Virginia / Winter Weather Advisories in 2021
Winter Weather Advisory 13, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this winter weather advisory at Feb 10, 2021, 3:31 AM EST for Fayette County, Greene County, Westmoreland County, Pennsylvania; 4 counties in West Virginia. It took effect at Feb 10, 2021, 4:00 PM EST. It was in force for 17 hr.
The area
The counties it named.
The facts
- Issued
- Feb 10, 2021, 3:31 AM EST (08:31 UTC)
- In effect from
- Feb 10, 2021, 4:00 PM EST
- Expired
- Feb 11, 2021, 8:47 AM EST
- In force
- 17 hr
- Issued by
- NWS Pittsburgh, PA
Counties Fayette County, PA, Greene County, PA, Westmoreland County, PA, Marion County, WV, Monongalia County, WV, Preston County, WV, Wetzel County, WV
The radar
The Pittsburgh radar (KPBZ), 88 km from the middle of the area, began a volume at 08:33 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
Roanoke, VA (KRNK), launched 00:00Z, 8.5 hours before the alert went out and 288 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
- 1074 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- 168 m²/s²
- 0-3 km storm-relative helicity
- 236 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 Feb 9, 8:27 PM EST, 7 hours 4 minutes earlier.
Area forecast discussion, Feb 9, 8:27 PM EST, 7 hours 4 minutes before
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The site you requested is temporarily down for maintenance or an unexpected outage.
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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 |
|---|---|---|---|---|
| Feb 10, 3:31 AM EST | Winter Storm Warning | PBZ | Preston, Tucker | 29 hr |
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.