Alert archive / New York / Mesoscale Discussions in 2005

Mesoscale Discussion 1890

July 27, 20057 states

The Storm Prediction Center issued this mesoscale discussion at Jul 27, 2005, 3:08 PM EDT for 7 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jul 27, 2005, 3:08 PM EDT (19:08 UTC)
Expired: Jul 27, 2005, 5:15 PM EDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 53 counties

Berkshire County, MA, Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Norfolk County, MA, Suffolk County, MA, Worcester County, MA, Androscoggin County, ME, Cumberland County, ME, Kennebec County, ME, Lincoln County, ME, Oxford County, ME, Sagadahoc County, ME, York County, ME, Belknap County, NH, Carroll County, NH, Cheshire County, NH, Coos County, NH, Grafton County, NH, Hillsborough County, NH, Merrimack County, NH, Rockingham County, NH, Strafford County, NH, Sullivan County, NH, Albany County, NY, Columbia County, NY, Delaware County, NY, Dutchess County, NY, Greene County, NY, Orange County, NY, Putnam County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Suffolk County, NY, Sullivan County, NY, Ulster County, NY, Washington County, NY, Westchester County, NY, Wayne County, PA, Kent County, RI, Providence County, RI, Bennington County, VT, Caledonia County, VT, Essex County, VT, Orange County, VT, Rutland County, VT, Washington County, VT, Windham County, VT, Windsor County, VT

The radar

The Albany radar (KENX), 91 km from the middle of the area, began a volume at 19:08 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

Albany, NY (KALY), launched 12:00Z, 7.1 hours before the alert went out and 75 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: 99 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 877 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 85 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
Jul 27, 11:55 AM EDT	Mesoscale Discussion	SPC		2 hr
Jul 27, 1:10 PM EDT	Severe Thunderstorm Watch	SPC		7 hr
Jul 27, 5:42 PM EDT	Mesoscale Discussion	SPC		93 min
Jul 27, 7:30 PM EDT	Mesoscale Discussion	SPC		30 min
Jul 27, 1:50 PM EDT	Severe Thunderstorm Watch	SPC	Bronx, Kings, Nassau, New York, Queens, Richmond	8 hr
Jul 27, 3:35 PM EDT	Mesoscale Discussion	SPC	Kings, Nassau, Queens, Richmond	115 min
Jul 27, 6:32 PM EDT	Mesoscale Discussion	SPC	Bronx, Kings, Nassau, New York, Queens, Richmond	88 min
Jul 26, 10:02 PM EDT	Mesoscale Discussion	SPC	Allegheny, Armstrong, Beaver, Blair, Butler, Cambria and 17 more	58 min

Nearby

Mesoscale Discussions in New York, 2005 Mesoscale Discussions in New Hampshire, 2005 Mesoscale Discussions in Connecticut, 2005 Every mesoscale discussion in 2005

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.