Alert archive / New York / Mesoscale Discussions in 2017

Mesoscale Discussion 213

February 25, 20175 states

The Storm Prediction Center issued this mesoscale discussion at Feb 25, 2017, 4:44 PM EST for 5 states. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued: Feb 25, 2017, 4:44 PM EST (21:44 UTC)
Expired: Feb 25, 2017, 6:15 PM EST
In force: 91 min
Issued by: the Storm Prediction Center

All 49 counties

Berkshire County, MA, Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Passaic County, NJ, Somerset County, NJ, Sussex County, NJ, Union County, NJ, Warren County, NJ, Albany County, NY, Bronx County, NY, Columbia County, NY, Delaware County, NY, Dutchess County, NY, Fulton County, NY, Greene County, NY, Kings County, NY, Montgomery County, NY, New York County, NY, Orange County, NY, Putnam County, NY, Rensselaer County, NY, Richmond County, NY, Rockland County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Sullivan County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Westchester County, NY, Berks County, PA, Bucks County, PA, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Pike County, PA, Wayne County, PA, Bennington County, VT, Rutland County, VT, Windham County, VT

The radar

The Albany radar (KENX), 17 km from the middle of the area, began a volume at 21:47 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, 9.7 hours before the alert went out and 33 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: 3 J/kg
Mixed-layer CIN: -449 J/kg
Mixed-layer LCL: 881 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 263 m²/s²
0-3 km storm-relative helicity: 358 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
Feb 25, 2:46 PM EST	Severe Thunderstorm Watch	SPC	Berkshire	5 hr
Feb 25, 6:24 PM EST	Mesoscale Discussion	SPC	Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex and 3 more	66 min
Feb 25, 12:16 PM EST	Mesoscale Discussion	SPC	Burlington, Camden, Essex, Gloucester, Hunterdon, Mercer and 7 more	89 min
Feb 25, 1:30 PM EST	Severe Thunderstorm Watch	SPC	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more	6 hr
Feb 25, 4:26 PM EST	Mesoscale Discussion	SPC	Camden, Cape May, Cumberland, Gloucester, Salem	94 min
Feb 24, 8:49 PM EST	Mesoscale Discussion	SPC	Beaver, Crawford, Lawrence, Mercer, Washington	116 min

Nearby

Mesoscale Discussions in New York, 2017 Mesoscale Discussions in New Jersey, 2017 Mesoscale Discussions in Pennsylvania, 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.