Alert archive / New Jersey / Mesoscale Discussions in 2003

Mesoscale Discussion 14

January 3, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Jan 3, 2003, 9:55 AM EST for 4 states. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Jan 3, 2003, 9:55 AM EST (14:55 UTC)
Expired: Jan 3, 2003, 2:00 PM EST
In force: 4 hr
Issued by: the Storm Prediction Center

Counties Carroll County, MD, Bergen County, NJ, Hunterdon County, NJ, Morris County, NJ, Passaic County, NJ, Sussex County, NJ, Warren County, NJ, Orange County, NY, Putnam County, NY, Rockland County, NY, Westchester County, NY, Berks County, PA, Lancaster County, PA, Lehigh County, PA, Northampton County, PA, York County, PA

The radar

The Philadelphia radar (KDIX), 103 km from the middle of the area, began a volume at 14:54 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

Brookhaven, NY (KOKX), launched 12:00Z, 2.9 hours before the alert went out and 176 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: 427 m above ground
0-6 km bulk shear: 87 kt
0-1 km storm-relative helicity: 295 m²/s²
0-3 km storm-relative helicity: 378 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
Jan 3, 12:37 PM EST	Mesoscale Discussion	SPC		4 hr
Jan 3, 1:32 PM EST	Mesoscale Discussion	SPC		7 hr
Jan 3, 10:28 AM EST	Mesoscale Discussion	SPC	Albany, Allegany, Broome, Cayuga, Chemung, Chenango and 27 more	4 hr

Nearby

Mesoscale Discussions in New Jersey, 2003 Mesoscale Discussions in Pennsylvania, 2003 Mesoscale Discussions in New York, 2003 Every mesoscale discussion in 2003

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.