Alert archive / New York / Mesoscale Discussions in 2004

Mesoscale Discussion 50

January 27, 20047 counties in New York; Trumbull County, Ohio; 4 counties in Pennsylvania

The Storm Prediction Center issued this mesoscale discussion at Jan 27, 2004, 3:36 AM EST for 7 counties in New York; Trumbull County, Ohio; 4 counties in Pennsylvania. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Jan 27, 2004, 3:36 AM EST (08:36 UTC)
Expired: Jan 27, 2004, 7:30 AM EST
In force: 4 hr
Issued by: the Storm Prediction Center

Counties Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY, Genesee County, NY, Niagara County, NY, Orleans County, NY, Wyoming County, NY, Trumbull County, OH, Crawford County, PA, Erie County, PA, Mercer County, PA, Warren County, PA

The radar

The Buffalo radar (KBUF), 93 km from the middle of the area, began a volume at 08:38 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, 8.6 hours before the alert went out and 328 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: 19 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 334 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 432 m²/s²
0-3 km storm-relative helicity: 505 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
Jan 27, 10:01 AM EST	Mesoscale Discussion	SPC	Allegany, Cattaraugus, Erie, Genesee, Livingston, Steuben and 1 more	4 hr
Jan 27, 5:28 PM EST	Mesoscale Discussion	SPC	Bronx, Dutchess, Kings, Nassau, New York, Orange and 7 more	5 hr
Jan 27, 3:08 AM EST	Mesoscale Discussion	SPC	Allen, Auglaize, Darke, Defiance, Fulton, Hancock and 8 more	5 hr
Jan 27, 7:40 AM EST	Mesoscale Discussion	SPC	Carroll, Columbiana, Geauga, Harrison, Jefferson, Mahoning and 2 more	4 hr

Nearby

Mesoscale Discussions in New York, 2004 Mesoscale Discussions in Pennsylvania, 2004 Mesoscale Discussions in Ohio, 2004 Every mesoscale discussion in 2004

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.