Alert archive / Pennsylvania / Lake Effect Snow Advisories in 2012
Lake Effect Snow Advisory 3, NWS State College, PA
NWS State College, PA issued this lake effect snow advisory at Nov 23, 2012, 2:39 PM EST for McKean County, Warren County, Pennsylvania. It took effect at Nov 23, 2012, 7:00 PM EST. It was in force for 26 hr.
The area
The counties it named.
The facts
- Issued
- Nov 23, 2012, 2:39 PM EST (19:39 UTC)
- In effect from
- Nov 23, 2012, 7:00 PM EST
- Expired
- Nov 24, 2012, 8:54 PM EST
- In force
- 26 hr
- Issued by
- NWS State College, PA
Counties McKean County, PA, Warren County, PA
The radar
The State College radar (KCCX), 125 km from the middle of the area, began a volume at 19:40 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
Pittsburgh, PA (KPIT), launched 12:00Z, 7.7 hours before the alert went out and 184 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
- 1414 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 201 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
Nearby
Lake Effect Snow Advisories in Pennsylvania, 2012Every lake effect snow 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.