Alert archive / New York / Mesoscale Discussions in 2004

Mesoscale Discussion 2047

August 19, 20045 states

The Storm Prediction Center issued this mesoscale discussion at Aug 19, 2004, 3:11 PM EDT for 5 states. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued: Aug 19, 2004, 3:11 PM EDT (19:11 UTC)
Expired: Aug 19, 2004, 4:45 PM EDT
In force: 94 min
Issued by: the Storm Prediction Center

All 37 counties

Berkshire County, MA, Franklin County, ME, Oxford County, ME, Somerset County, ME, Coos County, NH, Grafton County, NH, Sullivan County, NH, Albany County, NY, Broome County, NY, Chenango County, NY, Columbia County, NY, Delaware County, NY, Dutchess County, NY, Fulton County, NY, Greene County, NY, Montgomery County, NY, Otsego County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Sullivan County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Addison County, VT, Bennington County, VT, Caledonia County, VT, Chittenden County, VT, Essex County, VT, Lamoille County, VT, Orange County, VT, Orleans County, VT, Rutland County, VT, Washington County, VT, Windham County, VT, Windsor County, VT

The radar

The Burlington radar (KCXX), 70 km from the middle of the area, began a volume at 19:14 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

Gray, ME (KGYX), launched 12:00Z, 7.2 hours before the alert went out and 192 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: 24 J/kg
Mixed-layer CIN: -176 J/kg
Mixed-layer LCL: 572 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 136 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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Nearby

Mesoscale Discussions in New York, 2004 Mesoscale Discussions in Vermont, 2004 Mesoscale Discussions in Maine, 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.