Alert archive / New York / Mesoscale Discussions in 2014

Mesoscale Discussion 1047

June 17, 201415 counties in New York; 6 counties in Pennsylvania

The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2014, 9:08 PM EDT for 15 counties in New York; 6 counties in Pennsylvania. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: Jun 17, 2014, 9:08 PM EDT (01:08 UTC)
Expired: Jun 17, 2014, 10:45 PM EDT
In force: 97 min
Issued by: the Storm Prediction Center

All 21 counties

Allegany County, NY, Cattaraugus County, NY, Cayuga County, NY, Chemung County, NY, Cortland County, NY, Lewis County, NY, Madison County, NY, Oneida County, NY, Onondaga County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Tioga County, NY, Tompkins County, NY, Yates County, NY, Bradford County, PA, Cameron County, PA, McKean County, PA, Potter County, PA, Tioga County, PA, Warren County, PA

The radar

The Binghamton radar (KBGM), 113 km from the middle of the area, began a volume at 01:11 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

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 1.1 hours before the alert went out and 124 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: 518 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 1708 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 194 m²/s²
0-3 km storm-relative helicity: 369 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 5.0

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 17, 9:50 PM EDT	Severe Thunderstorm Watch	SPC	Albany, Fulton, Hamilton, Herkimer, Montgomery, Rensselaer and 5 more	4 hr
Jun 18, 12:51 AM EDT	Mesoscale Discussion	SPC	Columbia, Dutchess, Ulster	24 min
Jun 18, 6:30 PM EDT	Mesoscale Discussion	SPC	Allegheny, Armstrong, Beaver, Butler, Clarion, Jefferson and 4 more	60 min
Jun 18, 7:00 PM EDT	Severe Thunderstorm Watch	SPC	Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 9 more	5 hr

Nearby

Mesoscale Discussions in New York, 2014 Mesoscale Discussions in Pennsylvania, 2014 Every mesoscale discussion in 2014

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.