Alert archive / Pennsylvania / Mesoscale Discussions in 2005

Mesoscale Discussion 2389

November 6, 20054 states

The Storm Prediction Center issued this mesoscale discussion at Nov 6, 2005, 2:58 PM EST for 4 states. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued
Nov 6, 2005, 2:58 PM EST (19:58 UTC)
Expired
Nov 6, 2005, 4:30 PM EST
In force
92 min
Issued by
the Storm Prediction Center
All 80 counties

Washington County, MD, Hunterdon County, NJ, Morris County, NJ, Sussex County, NJ, Warren County, NJ, Albany County, NY, Broome County, NY, Cayuga County, NY, Chemung County, NY, Chenango County, NY, Cortland County, NY, Delaware County, NY, Fulton County, NY, Greene County, NY, Hamilton County, NY, Herkimer County, NY, Jefferson County, NY, Lewis County, NY, Madison County, NY, Montgomery County, NY, Oneida County, NY, Onondaga County, NY, Ontario County, NY, Orange County, NY, Oswego County, NY, Otsego County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Sullivan County, NY, Tioga County, NY, Tompkins County, NY, Ulster County, NY, Warren County, NY, Wayne County, NY, Yates County, NY, Adams County, PA, Bedford County, PA, Berks County, PA, Blair County, PA, Bradford County, PA, Bucks County, PA, Carbon County, PA, Centre County, PA, Chester County, PA, Clinton County, PA, Columbia County, PA, Cumberland County, PA, Dauphin County, PA, Delaware County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Juniata County, PA, Lackawanna County, PA, Lancaster County, PA, Lebanon County, PA, Lehigh County, PA, Luzerne County, PA, Lycoming County, PA, Mifflin County, PA, Monroe County, PA, Montgomery County, PA, Montour County, PA, Northampton County, PA, Northumberland County, PA, Perry County, PA, Pike County, PA, Schuylkill County, PA, Snyder County, PA, Sullivan County, PA, Susquehanna County, PA, Tioga County, PA, Union County, PA, Wayne County, PA, Wyoming County, PA, York County, PA

The radar

The Binghamton radar (KBGM), 20 km from the middle of the area, began a volume at 19:59 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

Albany, NY (KALY), launched 12:00Z, 8.0 hours before the alert went out and 203 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-pSkew-T log-p diagram, Albany, NY at 12:00Z on 2005-11-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2005-11-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
775 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
128 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.

IssuedProductOfficeCountiesLasted
Nov 6, 1:25 PM ESTMesoscale DiscussionSPCGarrett2 hr
Nov 6, 4:00 PM ESTSevere Thunderstorm WatchSPCHunterdon, Morris, Somerset, Sussex, Warren6 hr
Nov 6, 6:47 PM ESTMesoscale DiscussionSPCBergen, Essex, Hudson, Hunterdon, Mercer, Middlesex and 7 more88 min
Nov 6, 10:11 AM ESTMesoscale DiscussionSPCAllegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 7 more2 hr
Nov 6, 10:15 AM ESTSevere Thunderstorm WatchSPCAllegany, Cattaraugus, Cayuga, Chautauqua, Chemung, Erie and 15 more3 hr
Nov 6, 12:50 PM ESTTornado WatchSPCAllegany, Cattaraugus, Cayuga, Chautauqua, Chemung, Erie and 15 more5 hr
Nov 6, 5:20 AM ESTSevere Thunderstorm WatchSPCCrawford, Erie, Lawrence, Mercer7 hr
Nov 6, 8:44 AM ESTMesoscale DiscussionSPCCrawford, Erie91 min
Nov 6, 11:44 AM ESTMesoscale DiscussionSPCBeaver, Crawford, Erie, Lawrence, Mercer, Venango2 hr

Nearby

Mesoscale Discussions in Pennsylvania, 2005Mesoscale Discussions in New York, 2005Mesoscale Discussions in New Jersey, 2005Every 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.