Alert archive / New Jersey / Mesoscale Discussions in 2007

Mesoscale Discussion 1309

June 28, 200711 counties in New Jersey; 11 counties in New York; 7 counties in Pennsylvania

The Storm Prediction Center issued this mesoscale discussion at Jun 28, 2007, 4:04 PM EDT for 11 counties in New Jersey; 11 counties in New York; 7 counties in Pennsylvania. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued: Jun 28, 2007, 4:04 PM EDT (20:04 UTC)
Expired: Jun 28, 2007, 5:30 PM EDT
In force: 86 min
Issued by: the Storm Prediction Center

All 29 counties

Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Hunterdon County, NJ, Middlesex County, NJ, Morris County, NJ, Passaic County, NJ, Somerset County, NJ, Sussex County, NJ, Union County, NJ, Warren County, NJ, Bronx County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Orange County, NY, Putnam County, NY, Queens County, NY, Richmond County, NY, Rockland County, NY, Suffolk County, NY, Westchester County, NY, Carbon County, PA, Columbia County, PA, Lehigh County, PA, Luzerne County, PA, Monroe County, PA, Northampton County, PA, Pike County, PA

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.1 hours before the alert went out and 165 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: 5 J/kg
Mixed-layer CIN: -305 J/kg
Mixed-layer LCL: 1181 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 143 m²/s²
0-3 km storm-relative helicity: 144 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 27, 10:03 PM EDT	Mesoscale Discussion	SPC		57 min
Jun 28, 12:52 PM EDT	Mesoscale Discussion	SPC		83 min
Jun 28, 2:54 PM EDT	Severe Thunderstorm Watch	SPC	Greater Bridgeport Planning Region, Capitol Planning Region, Northwest Hills Planning Region, Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region and 1 more	6 hr
Jun 28, 2:07 PM EDT	Severe Thunderstorm Watch	SPC	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more	8 hr
Jun 28, 7:30 PM EDT	Mesoscale Discussion	SPC	Atlantic, Bergen, Burlington, Camden, Cape May, Cumberland and 13 more	60 min
Jun 28, 12:37 AM EDT	Mesoscale Discussion	SPC	Clinton	53 min

Nearby

Mesoscale Discussions in New Jersey, 2007 Mesoscale Discussions in New York, 2007 Mesoscale Discussions in Pennsylvania, 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.