Alert archive / New York / Mesoscale Discussions in 2015

Mesoscale Discussion 941

June 8, 201519 counties in New York; 12 counties in Pennsylvania

The Storm Prediction Center issued this mesoscale discussion at Jun 8, 2015, 2:58 PM EDT for 19 counties in New York; 12 counties in Pennsylvania. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued: Jun 8, 2015, 2:58 PM EDT (18:58 UTC)
Expired: Jun 8, 2015, 4:30 PM EDT
In force: 92 min
Issued by: the Storm Prediction Center

All 31 counties

Albany County, NY, Broome County, NY, Chemung County, NY, Chenango County, NY, Delaware County, NY, Fulton County, NY, Greene County, NY, Hamilton County, NY, Montgomery County, NY, Otsego County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Sullivan County, NY, Tioga County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Bradford County, PA, Columbia County, PA, Lackawanna County, PA, Luzerne County, PA, Lycoming County, PA, Monroe County, PA, Montour County, PA, Pike County, PA, Sullivan County, PA, Susquehanna County, PA, Wayne County, PA, Wyoming County, PA

The radar

The Binghamton radar (KBGM), 33 km from the middle of the area, began a volume at 19:01 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Tornado Watch 278Jun 8, 4:10 PM EDT

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 7.0 hours before the alert went out and 163 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: 1333 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 405 m²/s²
0-3 km storm-relative helicity: 446 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
Jun 8, 11:41 AM EDT	Mesoscale Discussion	SPC	Allegany, Cayuga, Chemung, Chenango, Cortland, Livingston and 12 more	2 hr
Jun 8, 1:39 PM EDT	Tornado Watch	SPC	Albany, Broome, Chemung, Chenango, Columbia, Cortland and 21 more	6 hr
Jun 8, 7:12 PM EDT	Mesoscale Discussion	SPC	Columbia, Delaware, Dutchess, Greene, Orange, Sullivan and 1 more	93 min
Jun 8, 1:31 PM EDT	Mesoscale Discussion	SPC	Adams, Bedford, Berks, Blair, Cambria, Cameron and 31 more	119 min
Jun 8, 2:34 PM EDT	Tornado Watch	SPC	Adams, Bedford, Blair, Centre, Clinton, Columbia and 19 more	5 hr
Jun 8, 3:20 PM EDT	Mesoscale Discussion	SPC	Adams, Berks, Bucks, Carbon, Centre, Chester and 25 more	85 min
Jun 8, 4:13 PM EDT	Tornado Watch	SPC	Berks, Bucks, Carbon, Chester, Lehigh, Monroe and 2 more	4 hr
Jun 8, 4:46 PM EDT	Mesoscale Discussion	SPC	Adams, Berks, Chester, Cumberland, Dauphin, Franklin and 6 more	59 min

Nearby

Mesoscale Discussions in New York, 2015 Mesoscale Discussions in Pennsylvania, 2015 Every mesoscale discussion in 2015

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.