Alert archive / New York / Mesoscale Discussions in 2007

Mesoscale Discussion 161

February 13, 200725 counties in New York; 23 counties in Ohio; 22 counties in Pennsylvania

The Storm Prediction Center issued this mesoscale discussion at Feb 13, 2007, 8:08 PM EST for 25 counties in New York; 23 counties in Ohio; 22 counties in Pennsylvania. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Feb 13, 2007, 8:08 PM EST (01:08 UTC)
Expired: Feb 14, 2007, 1:15 AM EST
In force: 5 hr
Issued by: the Storm Prediction Center

All 70 counties

Allegany County, NY, Broome County, NY, Cattaraugus County, NY, Cayuga County, NY, Chautauqua County, NY, Chemung County, NY, Chenango County, NY, Cortland County, NY, Delaware County, NY, Erie County, NY, Genesee County, NY, Livingston County, NY, Madison County, NY, Oneida County, NY, Onondaga County, NY, Ontario County, NY, Otsego County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Tioga County, NY, Tompkins County, NY, Wayne County, NY, Wyoming County, NY, Yates County, NY, Ashland County, OH, Ashtabula County, OH, Crawford County, OH, Cuyahoga County, OH, Erie County, OH, Geauga County, OH, Huron County, OH, Lake County, OH, Lorain County, OH, Lucas County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Ottawa County, OH, Portage County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Wayne County, OH, Wyandot County, OH, Bradford County, PA, Butler County, PA, Cameron County, PA, Clarion County, PA, Clearfield County, PA, Clinton County, PA, Crawford County, PA, Elk County, PA, Erie County, PA, Forest County, PA, Jefferson County, PA, Lawrence County, PA, Lycoming County, PA, McKean County, PA, Mercer County, PA, Potter County, PA, Sullivan County, PA, Susquehanna County, PA, Tioga County, PA, Venango County, PA, Warren County, PA, Wyoming County, PA

The radar

The State College radar (KCCX), 106 km from the middle of the area, began a volume at 01:12 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 125 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: 932 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 242 m²/s²
0-3 km storm-relative helicity: 471 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
Feb 14, 12:57 AM EST	Mesoscale Discussion	SPC	Allegany, Cattaraugus, Cayuga, Chenango, Cortland, Erie and 27 more	5 hr
Feb 14, 2:03 AM EST	Mesoscale Discussion	SPC	Bronx, Dutchess, Kings, Nassau, New York, Orange and 6 more	5 hr
Feb 14, 2:04 AM EST	Mesoscale Discussion	SPC	Bronx, Dutchess, Kings, Nassau, New York, Orange and 6 more	5 hr
Feb 14, 2:49 AM EST	Mesoscale Discussion	SPC	Bronx, Dutchess, Kings, Nassau, New York, Orange and 6 more	5 hr
Feb 14, 7:34 AM EST	Mesoscale Discussion	SPC	Albany, Bronx, Broome, Chenango, Columbia, Cortland and 30 more	4 hr
Feb 14, 1:15 PM EST	Mesoscale Discussion	SPC	Albany, Broome, Chenango, Clinton, Columbia, Delaware and 17 more	6 hr
Feb 13, 8:52 PM EST	Mesoscale Discussion	SPC	Athens, Belmont, Clinton, Fairfield, Guernsey, Harrison and 14 more	5 hr

Nearby

Mesoscale Discussions in New York, 2007 Mesoscale Discussions in Ohio, 2007 Mesoscale Discussions in Pennsylvania, 2007 Every mesoscale discussion in 2007

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.