Alert archive / New York / Winter Weather Advisories in 2008

Winter Weather Advisory 21, NWS Albany, NY

December 20, 2008Dutchess County, New York

NWS Albany, NY issued this winter weather advisory at Dec 20, 2008, 1:13 PM EST for Dutchess County, New York. It took effect at Dec 21, 2008, 4:00 AM EST. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued: Dec 20, 2008, 1:13 PM EST (18:13 UTC)
In effect from: Dec 21, 2008, 4:00 AM EST
Expired: Dec 21, 2008, 4:51 PM EST
In force: 13 hr
Issued by: NWS Albany, NY

County Dutchess County, NY

The radar

The Albany radar (KENX), 95 km from the middle of the area, began a volume at 18:15 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, 6.2 hours before the alert went out and 103 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: 657 m above ground
0-6 km bulk shear: 81 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 335 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 Albany, NY wrote its last area forecast discussion before this winter weather advisory went out at Dec 20, 12:25 PM EST, 48 minutes earlier.

Area forecast discussion, Dec 20, 12:25 PM EST, 48 minutes before

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Hazardous weather outlook, Dec 20, 4:28 AM EST, 8 hours 45 minutes before

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In the hours before

Special weather statement, Dec 20, 9:54 AM EST, 3 hours 19 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 20, 1:13 PM EST	Winter Storm Warning	ALY	Albany, Columbia, Fulton, Greene, Hamilton, Herkimer and 8 more	39 hr

Nearby

Winter Weather Advisories in New York, 2008 Every winter weather advisory in 2008

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.