Alert archive / Pennsylvania / Lake Effect Snow Advisories in 2015

Lake Effect Snow Advisory 2, NWS State College, PA

January 9, 2015McKean County, Warren County, Pennsylvania

NWS State College, PA issued this lake effect snow advisory at Jan 9, 2015, 2:52 AM EST for McKean County, Warren County, Pennsylvania. It took effect at Jan 9, 2015, 6:00 AM EST. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued: Jan 9, 2015, 2:52 AM EST (07:52 UTC)
In effect from: Jan 9, 2015, 6:00 AM EST
Expired: Jan 9, 2015, 10:00 PM EST
In force: 16 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 07:51 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, 7.9 hours before the alert went out and 126 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2105 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 245 m²/s²
0-3 km storm-relative helicity: 299 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 State College, PA wrote its last area forecast discussion before this lake effect snow advisory went out at Jan 9, 1:45 AM EST, 1 hour 7 minutes earlier.

Area forecast discussion, Jan 9, 1:45 AM EST, 1 hour 7 minutes before

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Hazardous weather outlook, Jan 9, 1:58 AM EST, 54 minutes before

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The office that day

Everything else NWS State College, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 9, 1:30 AM EST	Wind Advisory	CTP	Cambria, Somerset	10 hr
Jan 9, 4:23 AM EST	Wind Chill Advisory	CTP	Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 10 more	32 hr
Jan 9, 9:01 AM EST	Special Weather Statement	CTP	Cameron, Clearfield, Elk	29 min
Jan 9, 9:34 AM EST	Special Weather Statement	CTP	Clearfield	26 min
Jan 9, 9:39 AM EST	Special Weather Statement	CTP	Cambria, Somerset	111 min
Jan 9, 10:17 AM EST	Special Weather Statement	CTP	Clearfield, Clinton	28 min
Jan 9, 10:41 AM EST	Special Weather Statement	CTP	Clearfield, Clinton	64 min
Jan 9, 10:43 AM EST	Special Weather Statement	CTP	Clearfield, Clinton	62 min
Jan 9, 11:12 AM EST	Special Weather Statement	CTP	Bedford, Blair, Centre, Huntingdon, Mifflin, Somerset	63 min
Jan 9, 12:05 PM EST	Special Weather Statement	CTP	Blair, Centre, Columbia, Huntingdon, Juniata, Mifflin and 4 more	55 min
Jan 9, 1:07 PM EST	Special Weather Statement	CTP	Columbia, Montour, Northumberland, Snyder, Union	23 min

Nearby

Lake Effect Snow Advisories in Pennsylvania, 2015 Every lake effect snow advisory in 2015

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.