Alert archive / New York / Mesoscale Discussions in 2006

Mesoscale Discussion 2071

October 4, 20068 counties in New York; Crawford County, Erie County, Warren County, Pennsylvania

The Storm Prediction Center issued this mesoscale discussion at Oct 4, 2006, 7:03 AM EDT for 8 counties in New York; Crawford County, Erie County, Warren County, Pennsylvania. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued: Oct 4, 2006, 7:03 AM EDT (11:03 UTC)
Expired: Oct 4, 2006, 8:30 AM EDT
In force: 87 min
Issued by: the Storm Prediction Center

Counties Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY, Genesee County, NY, Livingston County, NY, Monroe County, NY, Orleans County, NY, Wyoming County, NY, Crawford County, PA, Erie County, PA, Warren County, PA

The radar

The Buffalo radar (KBUF), 61 km from the middle of the area, began a volume at 11:03 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

Detroit, MI (KDTX), launched 00:00Z, 11.1 hours before the alert went out and 356 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: 448 J/kg
Mixed-layer CIN: -231 J/kg
Mixed-layer LCL: 1044 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 105 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
Oct 4, 5:55 PM EDT	Mesoscale Discussion	SPC	Richmond	95 min
Oct 4, 1:54 PM EDT	Mesoscale Discussion	SPC	Allegheny, Armstrong, Beaver, Blair, Butler, Cambria and 12 more	66 min
Oct 4, 4:25 PM EDT	Severe Thunderstorm Watch	SPC	Adams, Allegheny, Bedford, Blair, Cambria, Centre and 23 more	6 hr
Oct 4, 7:34 PM EDT	Mesoscale Discussion	SPC	Fayette, Greene, Somerset	86 min

Nearby

Mesoscale Discussions in New York, 2006 Mesoscale Discussions in Pennsylvania, 2006 Every mesoscale discussion in 2006

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.