Alert archive / Pennsylvania / Winter Weather Advisories in 2014
Winter Weather Advisory 21, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this winter weather advisory at Nov 25, 2014, 2:30 PM EST for Fayette County, Westmoreland County, Pennsylvania; Marion County, West Virginia. It took effect at Nov 26, 2014, 4:00 AM EST. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Nov 25, 2014, 2:30 PM EST (19:30 UTC)
- In effect from
- Nov 26, 2014, 4:00 AM EST
- Expired
- Nov 26, 2014, 5:18 PM EST
- In force
- 13 hr
- Issued by
- NWS Pittsburgh, PA
Counties Fayette County, PA, Westmoreland County, PA, Marion County, WV
The radar
The Pittsburgh radar (KPBZ), 78 km from the middle of the area, began a volume at 19:33 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 12:00Z, 7.5 hours before the alert went out and 303 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
- 964 m above ground
- 0-6 km bulk shear
- 96 kt
- 0-1 km storm-relative helicity
- -43 m²/s²
- 0-3 km storm-relative helicity
- 108 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 Nov 25, 12:55 PM EST, 1 hour 35 minutes earlier.
Area forecast discussion, Nov 25, 12:55 PM EST, 1 hour 35 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 |
|---|---|---|---|---|
| Nov 25, 2:30 PM EST | Winter Storm Warning | PBZ | Fayette, Westmoreland | 27 hr |
Nearby
Winter Weather Advisories in Pennsylvania, 2014Winter Weather Advisories in West Virginia, 2014Every winter weather advisory in 2014
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.