Alert archive / Pennsylvania / Lake Effect Snow Advisories in 2017
Lake Effect Snow Advisory 7, NWS Cleveland, OH
NWS Cleveland, OH issued this lake effect snow advisory at Feb 15, 2017, 3:31 AM EST for Crawford County, Erie County, Pennsylvania. It took effect at Feb 15, 2017, 1:00 PM EST. It was in force for 25 hr.
The area
The counties it named.
The facts
- Issued
- Feb 15, 2017, 3:31 AM EST (08:31 UTC)
- In effect from
- Feb 15, 2017, 1:00 PM EST
- Expired
- Feb 16, 2017, 2:08 PM EST
- In force
- 25 hr
- Issued by
- NWS Cleveland, OH
Counties Crawford County, PA, Erie County, PA
The radar
The Pittsburgh radar (KPBZ), 153 km from the middle of the area, began a volume at 08:34 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 00:00Z, 8.5 hours before the alert went out and 162 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
- 986 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 168 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 advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cleveland, OH wrote its last area forecast discussion before this lake effect snow advisory went out at Feb 14, 6:12 PM EST, 9 hours 19 minutes earlier.
Area forecast discussion, Feb 14, 6:12 PM EST, 9 hours 19 minutes before
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</html>Hazardous weather outlook, Feb 14, 4:25 AM EST, 23 hours 6 minutes before
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Lake Effect Snow Advisories in Pennsylvania, 2017Every lake effect snow advisory 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.