Alert archive / New York / Mesoscale Discussions in 2007

Mesoscale Discussion 1243

June 21, 20077 states

The Storm Prediction Center issued this mesoscale discussion at Jun 21, 2007, 5:58 PM EDT for 7 states. It was in force for 62 min.

The area

The outline as issued.

The facts

Issued: Jun 21, 2007, 5:58 PM EDT (21:58 UTC)
Expired: Jun 21, 2007, 7:00 PM EDT
In force: 62 min
Issued by: the Storm Prediction Center

All 68 counties

Berkshire County, MA, Bristol County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA, Worcester County, MA, Cheshire County, NH, Hillsborough County, NH, Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Hunterdon County, NJ, Morris County, NJ, Passaic County, NJ, Somerset County, NJ, Sussex County, NJ, Union County, NJ, Warren County, NJ, Albany County, NY, Bronx County, NY, Broome County, NY, Chenango County, NY, Columbia County, NY, Cortland County, NY, Delaware County, NY, Dutchess County, NY, Fulton County, NY, Greene County, NY, Herkimer County, NY, Kings County, NY, Madison County, NY, Montgomery County, NY, Nassau County, NY, New York County, NY, Oneida County, NY, Orange County, NY, Otsego County, NY, Putnam County, NY, Queens County, NY, Rensselaer County, NY, Richmond County, NY, Rockland County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Suffolk County, NY, Sullivan County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Westchester County, NY, Lackawanna County, PA, Monroe County, PA, Northampton County, PA, Pike County, PA, Susquehanna County, PA, Wayne County, PA, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI, Bennington County, VT, Windham County, VT

The radar

The Albany radar (KENX), 97 km from the middle of the area, began a volume at 22:01 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, 10.0 hours before the alert went out and 90 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: 1404 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 42 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 21, 1:25 PM EDT	Mesoscale Discussion	SPC		95 min
Jun 21, 2:47 PM EDT	Severe Thunderstorm Watch	SPC	Northwest Hills Planning Region	7 hr
Jun 21, 2:12 PM EDT	Mesoscale Discussion	SPC	Allegheny, Armstrong, Beaver, Butler, Fayette, Indiana and 5 more	93 min

Nearby

Mesoscale Discussions in New York, 2007 Mesoscale Discussions in Massachusetts, 2007 Mesoscale Discussions in New Jersey, 2007 Every mesoscale discussion in 2007

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.