Alert archive / New York / Lake Effect Snow Advisories in 2009

Lake Effect Snow Advisory 38, NWS Buffalo, NY

February 4, 20094 counties in New York

NWS Buffalo, NY issued this lake effect snow advisory at Feb 4, 2009, 3:35 PM EST for 4 counties in New York. It took effect at Feb 4, 2009, 9:00 PM EST. It was in force for 26 hr.

The area

The counties it named.

The facts

Issued
Feb 4, 2009, 3:35 PM EST (20:35 UTC)
In effect from
Feb 4, 2009, 9:00 PM EST
Expired
Feb 5, 2009, 10:36 PM EST
In force
26 hr
Issued by
NWS Buffalo, NY

Counties Cayuga County, NY, Monroe County, NY, Oswego County, NY, Wayne County, NY

The radar

The Ft Drum radar (KTYX), 114 km from the middle of the area, began a volume at 20:41 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

Albany, NY (KALY), launched 12:00Z, 8.6 hours before the alert went out and 252 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-pSkew-T log-p diagram, Albany, NY at 12:00Z on 2009-02-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2009-02-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -59 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
988 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-59 m²/s²
0-3 km storm-relative helicity
-40 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 Buffalo, NY wrote its last area forecast discussion before this lake effect snow advisory went out at Feb 4, 3:20 PM EST, 15 minutes earlier.

Area forecast discussion, Feb 4, 3:20 PM EST, 15 minutes before
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Hazardous weather outlook, Feb 4, 5:16 AM EST, 10 hours 19 minutes before
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Nearby

Lake Effect Snow Advisories in New York, 2009Every lake effect snow advisory in 2009

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.