Alert archive / New York / Mesoscale Discussions in 2008

Mesoscale Discussion 40

January 9, 200826 counties in New York; 26 counties in Pennsylvania

The Storm Prediction Center issued this mesoscale discussion at Jan 9, 2008, 3:50 AM EST for 26 counties in New York; 26 counties in Pennsylvania. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued
Jan 9, 2008, 3:50 AM EST (08:50 UTC)
Expired
Jan 9, 2008, 5:45 AM EST
In force
115 min
Issued by
the Storm Prediction Center
All 52 counties

Allegany County, NY, Cattaraugus County, NY, Cayuga County, NY, Chemung County, NY, Chenango County, NY, Cortland County, NY, Erie County, NY, Genesee County, NY, Jefferson County, NY, Lewis County, NY, Livingston County, NY, Madison County, NY, Monroe County, NY, Oneida County, NY, Onondaga County, NY, Ontario County, NY, Oswego County, NY, Schuyler County, NY, Seneca County, NY, St. Lawrence County, NY, Steuben County, NY, Tioga County, NY, Tompkins County, NY, Wayne County, NY, Wyoming County, NY, Yates County, NY, Armstrong County, PA, Bedford County, PA, Blair County, PA, Bradford County, PA, Cambria County, PA, Cameron County, PA, Centre County, PA, Clarion County, PA, Clearfield County, PA, Clinton County, PA, Elk County, PA, Fayette County, PA, Forest County, PA, Huntingdon County, PA, Indiana County, PA, Jefferson County, PA, Lycoming County, PA, McKean County, PA, Mifflin County, PA, Potter County, PA, Somerset County, PA, Sullivan County, PA, Tioga County, PA, Union County, PA, Warren County, PA, Westmoreland County, PA

The radar

The State College radar (KCCX), 113 km from the middle of the area, began a volume at 08:53 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

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 8.8 hours before the alert went out and 154 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, Buffalo Intl Airport, NY at 00:00Z on 2008-01-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 15 joules per kilogram.LCLLFCEL10008507005003002001001 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, Buffalo Intl Airport, NY at 00:00Z on 2008-01-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 211 square meters per square second.1939587897Sfc1 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
15 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
1361 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
211 m²/s²
0-3 km storm-relative helicity
275 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
Jan 9, 3:31 AM ESTSevere Thunderstorm WatchSPCAllegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 10 more4 hr
Jan 9, 5:16 AM ESTSevere Thunderstorm WatchSPCFranklin, Hamilton, Herkimer, Madison, Oneida, Onondaga and 6 more3 hr
Jan 9, 7:01 AM ESTMesoscale DiscussionSPCClinton, Essex, Franklin, Fulton, Hamilton, Herkimer and 8 more119 min
Jan 9, 12:53 AM ESTSevere Thunderstorm WatchSPCCrawford, Erie3 hr

Nearby

Mesoscale Discussions in New York, 2008Mesoscale Discussions in Pennsylvania, 2008Every mesoscale discussion in 2008

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.