Alert archive / New York / Mesoscale Discussions in 2017

Mesoscale Discussion 131

January 23, 2017Franklin County, Massachusetts; 15 counties in New York; Bennington County, Windham County, Vermont

The Storm Prediction Center issued this mesoscale discussion at Jan 23, 2017, 8:14 PM EST for Franklin County, Massachusetts; 15 counties in New York; Bennington County, Windham County, Vermont. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Jan 23, 2017, 8:14 PM EST (01:14 UTC)
Expired: Jan 24, 2017, 2:15 AM EST
In force: 6 hr
Issued by: the Storm Prediction Center

Counties Franklin County, MA, Albany County, NY, Broome County, NY, Chenango County, NY, Cortland County, NY, Delaware County, NY, Fulton County, NY, Greene County, NY, Madison County, NY, Montgomery County, NY, Otsego County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Washington County, NY, Bennington County, VT, Windham County, VT

The radar

The Albany radar (KENX), 32 km from the middle of the area, began a volume at 01:17 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

Brookhaven, NY (KOKX), launched 00:00Z, 1.2 hours before the alert went out and 245 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: 451 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 388 m²/s²
0-3 km storm-relative helicity: 746 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 23, 11:48 PM EST	Mesoscale Discussion	SPC	Essex	6 hr
Jan 24, 5:44 AM EST	Mesoscale Discussion	SPC	Clinton, Essex, Franklin, Hamilton, Saratoga, Warren and 1 more	6 hr

Nearby

Mesoscale Discussions in New York, 2017 Mesoscale Discussions in Vermont, 2017 Mesoscale Discussions in Massachusetts, 2017 Every mesoscale discussion in 2017

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.