Alert archive / New York / Mesoscale Discussions in 2004

Mesoscale Discussion 1268

June 14, 200416 counties in New York; 12 counties in Pennsylvania

The Storm Prediction Center issued this mesoscale discussion at Jun 14, 2004, 3:20 PM EDT for 16 counties in New York; 12 counties in Pennsylvania. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued: Jun 14, 2004, 3:20 PM EDT (19:20 UTC)
Expired: Jun 14, 2004, 5:15 PM EDT
In force: 115 min
Issued by: the Storm Prediction Center

All 28 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, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Wayne County, NY, Wyoming County, NY, Yates County, NY, Cameron County, PA, Clarion County, PA, Crawford County, PA, Elk County, PA, Erie County, PA, Forest County, PA, McKean County, PA, Mercer County, PA, Potter County, PA, Tioga County, PA, Venango County, PA, Warren County, PA

The radar

The Buffalo radar (KBUF), 29 km from the middle of the area, began a volume at 19:22 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.

Severe Thunderstorm Watch 470Jun 14, 5:00 PM EDT

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.3 hours before the alert went out and 28 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 664 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 36 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
Jun 13, 8:30 PM EDT	Mesoscale Discussion	SPC	Chautauqua	90 min
Jun 14, 11:22 AM EDT	Mesoscale Discussion	SPC	Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 9 more	53 min
Jun 14, 5:00 PM EDT	Severe Thunderstorm Watch	SPC	Allegany, Cattaraugus, Chautauqua, Chemung, Erie, Genesee and 9 more	6 hr
Jun 13, 11:08 PM EDT	Mesoscale Discussion	SPC	Beaver, Butler, Crawford, Erie, Forest, Lawrence and 3 more	97 min
Jun 13, 11:45 PM EDT	Severe Thunderstorm Watch	SPC	Allegheny, Beaver, Butler, Lawrence, Mercer, Venango and 1 more	4 hr
Jun 14, 2:40 AM EDT	Mesoscale Discussion	SPC	Allegheny, Beaver, Washington	2 hr
Jun 14, 4:45 PM EDT	Mesoscale Discussion	SPC	Adams, Berks, Bucks, Chester, Cumberland, Dauphin and 10 more	2 hr
Jun 14, 7:15 PM EDT	Severe Thunderstorm Watch	SPC	Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 25 more	4 hr

Nearby

Mesoscale Discussions in New York, 2004 Mesoscale Discussions in Pennsylvania, 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.