Alert archive / New Jersey / Mesoscale Discussions in 2014

Mesoscale Discussion 1268

July 3, 201410 states

The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2014, 7:59 PM EDT for 10 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jul 3, 2014, 7:59 PM EDT (23:59 UTC)
Expired: Jul 3, 2014, 10:00 PM EDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 89 counties

Kent County, DE, New Castle County, DE, Sussex County, DE, Berkshire County, MA, Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Suffolk County, MA, Worcester County, MA, Caroline County, MD, Cecil County, MD, Androscoggin County, ME, Cumberland County, ME, Franklin County, ME, Kennebec County, ME, Oxford County, ME, Sagadahoc County, ME, Somerset 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, Atlantic County, NJ, Bergen County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Essex County, NJ, Gloucester County, NJ, Hudson County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Passaic County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Union County, NJ, Warren County, NJ, Bronx County, NY, Columbia County, NY, Dutchess County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Orange County, NY, Putnam County, NY, Queens County, NY, Rensselaer County, NY, Richmond County, NY, Rockland County, NY, Ulster County, NY, Washington County, NY, Westchester County, NY, Bucks County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA, Pike County, PA, Providence County, RI, 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 Albany radar (KENX), 104 km from the middle of the area, began a volume at 00:04 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, 12.0 hours before the alert went out and 89 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: 7 J/kg
Mixed-layer CIN: -251 J/kg
Mixed-layer LCL: 1010 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 107 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 3, 1:30 PM EDT	Mesoscale Discussion	SPC		3 hr
Jul 3, 2:12 PM EDT	Severe Thunderstorm Watch	SPC	Greater Bridgeport Planning Region, Capitol Planning Region, Northwest Hills Planning Region, Naugatuck Valley Planning Region, Northeastern Connecticut Planning Region	10 hr
Jul 3, 4:55 PM EDT	Mesoscale Discussion	SPC		2 hr
Jul 3, 11:57 AM EDT	Mesoscale Discussion	SPC	Allegany, Baltimore, Carroll, Frederick, Garrett, Harford and 4 more	63 min
Jul 3, 12:52 PM EDT	Severe Thunderstorm Watch	SPC	Allegany, Anne Arundel, Baltimore, Carroll, Charles, Frederick and 6 more	8 hr
Jul 3, 3:41 PM EDT	Mesoscale Discussion	SPC	Carroll, Frederick, Howard, Montgomery, Washington	64 min

Nearby

Mesoscale Discussions in New Jersey, 2014 Mesoscale Discussions in New York, 2014 Mesoscale Discussions in Vermont, 2014 Every mesoscale discussion in 2014

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.