Alert archive / New York / Winter Weather Advisories in 2011

Winter Weather Advisory 6, NWS Buffalo, NY

January 31, 2011Allegany County, Cattaraugus County, Chautauqua County, New York

NWS Buffalo, NY issued this winter weather advisory at Jan 31, 2011, 3:50 PM EST for Allegany County, Cattaraugus County, Chautauqua County, New York. It took effect at Feb 1, 2011, 1:00 AM EST. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Jan 31, 2011, 3:50 PM EST (20:50 UTC)
In effect from: Feb 1, 2011, 1:00 AM EST
Expired: Feb 1, 2011, 7:41 AM EST
In force: 7 hr
Issued by: NWS Buffalo, NY

Counties Allegany County, NY, Cattaraugus County, NY, Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 76 km from the middle of the area, began a volume at 20:50 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, 8.8 hours before the alert went out and 237 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: 1253 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: -109 m²/s²
0-3 km storm-relative helicity: 33 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 winter weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Buffalo, NY wrote its last area forecast discussion before this winter weather advisory went out at Jan 31, 3:31 PM EST, 19 minutes earlier.

Area forecast discussion, Jan 31, 3:31 PM EST, 19 minutes before

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Hazardous weather outlook, Jan 31, 3:35 PM EST, 15 minutes before

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The office that day

Everything else NWS Buffalo, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 31, 4:11 AM EST	Winter Storm Watch	BUF	Allegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 10 more	12 hr
Jan 31, 3:46 PM EST	Gale Watch	BUF		13 hr
Jan 31, 3:46 PM EST	Small Craft Advisory	BUF		13 hr
Jan 31, 3:50 PM EST	Winter Storm Warning	BUF	Allegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 10 more	42 hr

Nearby

Winter Weather Advisories in New York, 2011 Every winter weather advisory in 2011

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.