Alert archive / Pennsylvania / Lake Effect Snow Warnings in 2017
Lake Effect Snow Warning 1, NWS State College, PA
NWS State College, PA issued this lake effect snow warning at Feb 12, 2017, 4:00 AM EST for Warren County, Pennsylvania. It took effect at Feb 12, 2017, 4:00 PM EST. It was in force for 21 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 12, 2017, 4:00 AM EST (09:00 UTC)
- In effect from
- Feb 12, 2017, 4:00 PM EST
- Expired
- Feb 13, 2017, 1:00 PM EST
- In force
- 21 hr
- Issued by
- NWS State College, PA
County Warren County, PA
The radar
The Buffalo radar (KBUF), 134 km from the middle of the area, began a volume at 09:00 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 (KAGC), launched 00:00Z, 9.0 hours before the alert went out and 171 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
- 1306 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- 207 m²/s²
- 0-3 km storm-relative helicity
- 231 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this lake effect snow warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS State College, PA wrote its last area forecast discussion before this lake effect snow warning went out at Feb 12, 3:53 AM EST, 7 minutes earlier.
Area forecast discussion, Feb 12, 3:53 AM EST, 7 minutes before
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</html>The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 12, 4:00 AM EST | Lake Effect Snow Advisory | CTP | McKean | 33 hr |
| Feb 12, 4:00 AM EST | Winter Weather Advisory | CTP | Cambria, Somerset | 33 hr |
| Feb 12, 4:00 AM EST | Freezing Rain Advisory | CTP | Lycoming, Potter, Schuylkill, Sullivan, Tioga | 13 hr |
| Feb 12, 4:22 AM EST | Wind Advisory | CTP | Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more | 37 hr |
Nearby
Lake Effect Snow Warnings in Pennsylvania, 2017Every lake effect snow warning in 2017
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.