Alert archive / Pennsylvania / Freezing Rain Advisories in 2012
Freezing Rain Advisory 3, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this freezing rain advisory at Feb 28, 2012, 2:42 PM EST for 5 counties in Pennsylvania. It took effect at Feb 29, 2012, 4:00 AM EST. It was in force for 11 min.
The area
The counties it named.
The facts
- Issued
- Feb 28, 2012, 2:42 PM EST (19:42 UTC)
- In effect from
- Feb 29, 2012, 4:00 AM EST
- Expired
- Feb 29, 2012, 4:11 AM EST
- In force
- 11 min
- Issued by
- NWS Pittsburgh, PA
Counties Clarion County, PA, Forest County, PA, Jefferson County, PA, Mercer County, PA, Venango County, PA
The radar
The Pittsburgh radar (KPBZ), 104 km from the middle of the area, began a volume at 19:45 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
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.7 hours before the alert went out and 193 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
- 950 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- -48 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this freezing rain 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 freezing rain advisory went out at Feb 28, 1:10 PM EST, 1 hour 32 minutes earlier.
Area forecast discussion, Feb 28, 1:10 PM EST, 1 hour 32 minutes before
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</html>Hazardous weather outlook, Feb 28, 1:25 PM EST, 1 hour 17 minutes before
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Freezing Rain Advisories in Pennsylvania, 2012Every freezing rain advisory in 2012
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.