Alert archive / New York / Mesoscale Discussions in 2008

Mesoscale Discussion 41

January 9, 200814 counties in New York; 4 counties in Vermont

The Storm Prediction Center issued this mesoscale discussion at Jan 9, 2008, 7:01 AM EST for 14 counties in New York; 4 counties in Vermont. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued: Jan 9, 2008, 7:01 AM EST (12:01 UTC)
Expired: Jan 9, 2008, 9:00 AM EST
In force: 119 min
Issued by: the Storm Prediction Center

Counties Clinton County, NY, Essex County, NY, Franklin County, NY, Fulton County, NY, Hamilton County, NY, Herkimer County, NY, Lewis County, NY, Madison County, NY, Montgomery County, NY, Oneida County, NY, Saratoga County, NY, St. Lawrence County, NY, Warren County, NY, Washington County, NY, Addison County, VT, Chittenden County, VT, Grand Isle County, VT, Rutland County, VT

The radar

The Ft Drum radar (KTYX), 98 km from the middle of the area, began a volume at 12:05 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, 0.0 hours before the alert went out and 139 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: 713 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 300 m²/s²
0-3 km storm-relative helicity: 350 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 9, 3:31 AM EST	Severe Thunderstorm Watch	SPC	Allegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 10 more	4 hr
Jan 9, 3:50 AM EST	Mesoscale Discussion	SPC	Allegany, Cattaraugus, Cayuga, Chemung, Chenango, Cortland and 20 more	115 min
Jan 9, 5:16 AM EST	Severe Thunderstorm Watch	SPC	Franklin, Hamilton, Herkimer, Madison, Oneida, Onondaga and 6 more	3 hr

Nearby

Mesoscale Discussions in New York, 2008 Mesoscale Discussions in Vermont, 2008 Every mesoscale discussion 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.