Alert archive / Vermont / Winter Storm Watches in 2012

Winter Storm Watch 2, NWS Burlington, VT

February 28, 201211 counties in Vermont; 4 counties in New York

NWS Burlington, VT issued this winter storm watch at Feb 28, 2012, 4:07 AM EST for 11 counties in Vermont; 4 counties in New York. It took effect at Feb 29, 2012, 7:00 PM EST. It was in force for .

The area

The counties it named.

The facts

Issued: Feb 28, 2012, 4:07 AM EST (09:07 UTC)
In effect from: Feb 29, 2012, 7:00 PM EST
Expired: Feb 29, 2012, 4:38 AM EST
In force
Issued by: NWS Burlington, VT

Counties Clinton County, NY, Essex County, NY, Franklin County, NY, St. Lawrence County, NY, Addison County, VT, Caledonia County, VT, Chittenden County, VT, Essex County, VT, Franklin County, VT, Grand Isle County, VT, Lamoille County, VT, Orange County, VT, Orleans County, VT, Rutland County, VT, Washington County, VT

The radar

The Burlington radar (KCXX), 11 km from the middle of the area, began a volume at 09:11 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 00:00Z, 9.1 hours before the alert went out and 204 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: 1968 m above ground
0-6 km bulk shear: 98 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 272 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 storm watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Burlington, VT wrote its last area forecast discussion before this winter storm watch went out at Feb 28, 12:44 AM EST, 3 hours 23 minutes earlier.

Area forecast discussion, Feb 28, 12:44 AM EST, 3 hours 23 minutes before

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Hazardous weather outlook, Feb 28, 3:59 AM EST, 8 minutes before

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Nearby

Winter Storm Watches in Vermont, 2012 Winter Storm Watches in New York, 2012 Every winter storm watch in 2012

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.