Alert archive / Pennsylvania / Mesoscale Discussions in 2005

Mesoscale Discussion 2386

November 6, 200513 counties in New York; 25 counties in Pennsylvania

The Storm Prediction Center issued this mesoscale discussion at Nov 6, 2005, 10:11 AM EST for 13 counties in New York; 25 counties in Pennsylvania. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Nov 6, 2005, 10:11 AM EST (15:11 UTC)
Expired: Nov 6, 2005, 12:15 PM EST
In force: 2 hr
Issued by: the Storm Prediction Center

All 38 counties

Allegany County, NY, Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY, Genesee County, NY, Livingston County, NY, Monroe County, NY, Niagara County, NY, Ontario County, NY, Orleans County, NY, Steuben County, NY, Wyoming County, NY, Yates County, NY, Armstrong County, PA, Bedford County, PA, Blair County, PA, Cambria County, PA, Cameron County, PA, Centre County, PA, Clarion County, PA, Clearfield County, PA, Clinton County, PA, Elk County, PA, Forest County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Indiana County, PA, Jefferson County, PA, Juniata County, PA, Lycoming County, PA, McKean County, PA, Mifflin County, PA, Potter County, PA, Somerset County, PA, Tioga County, PA, Warren County, PA, Westmoreland County, PA

The radar

The State College radar (KCCX), 62 km from the middle of the area, began a volume at 15:15 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.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 3.2 hours before the alert went out and 162 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: 86 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 947 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 359 m²/s²
0-3 km storm-relative helicity: 291 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
Nov 6, 10:15 AM EST	Severe Thunderstorm Watch	SPC	Allegany, Cattaraugus, Cayuga, Chautauqua, Chemung, Erie and 15 more	3 hr
Nov 6, 12:50 PM EST	Tornado Watch	SPC	Allegany, Cattaraugus, Cayuga, Chautauqua, Chemung, Erie and 15 more	5 hr
Nov 6, 2:58 PM EST	Mesoscale Discussion	SPC	Albany, Broome, Cayuga, Chemung, Chenango, Cortland and 28 more	92 min
Nov 6, 4:00 PM EST	Severe Thunderstorm Watch	SPC	Albany, Broome, Chenango, Clinton, Cortland, Delaware and 21 more	6 hr
Nov 6, 6:47 PM EST	Mesoscale Discussion	SPC	Albany, Bronx, Clinton, Columbia, Delaware, Dutchess and 21 more	88 min
Nov 6, 5:20 AM EST	Severe Thunderstorm Watch	SPC	Crawford, Erie, Lawrence, Mercer	7 hr
Nov 6, 8:44 AM EST	Mesoscale Discussion	SPC	Crawford, Erie	91 min
Nov 6, 11:44 AM EST	Mesoscale Discussion	SPC	Beaver, Crawford, Erie, Lawrence, Mercer, Venango	2 hr

Nearby

Mesoscale Discussions in Pennsylvania, 2005 Mesoscale Discussions in New York, 2005 Every mesoscale discussion in 2005

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.