Alert archive / New Jersey / Special Weather Statements in 2017

Special Weather Statement, NWS Philadelphia/Mount Holly

March 3, 2017Hunterdon County, Middlesex County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Mar 3, 2017, 7:45 PM EST for Hunterdon County, Middlesex County, Somerset County, New Jersey. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Mar 3, 2017, 7:45 PM EST (00:45 UTC)
Expired
Mar 3, 2017, 8:15 PM EST
In force
30 min
Issued by
NWS Philadelphia/Mount Holly

Counties Hunterdon County, NJ, Middlesex County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 66 km from the middle of the area, began a volume at 00:44 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 00:00Z, 0.8 hours before the alert went out and 137 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-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 2017-03-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2017-03-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
2271 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
166 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

497 
WWUS81 KPHI 040045
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
745 PM EST FRI MAR 3 2017

NJZ009-010-012-040115-
Hunterdon-Somerset-Middlesex-
745 PM EST FRI MAR 3 2017

...A SNOW SQUALL WILL AFFECT EASTERN HUNTERDON...NORTHEASTERN 
MERCER...SOMERSET AND MIDDLESEX COUNTIES...

At 742 PM EST, a snow squall was located near Interstates 78 and 287 
from near Millington to Bridgewater to Lebanon. Movement was 
southeast at 30 mph.

This squall will be near...
  Somerville and Middlesex around 750 PM EST. 
  Bound Brook, Manville and Martinsville around 755 PM EST. 
  Millstone and Colonia around 800 PM EST. 
  Somerset, Edison and Society Hill around 805 PM EST. 
  New Brunswick, Perth Amboy, Sayreville, Carteret, Belle Mead and 
  Skillman around 810 PM EST. 
  Old Bridge, East Brunswick, South Brunswick, North Brunswick, 
  Matawan, Rocky Hill, North Brunswick Township, Kendall Park, 
  Kingston and Dayton around 815 PM EST. 

Visibilities in this squall will drop quickly to as low as one-
quarter mile in spots for a few minutes. Wind gusts in excess of 30 
mph are also possible. Any snowfall accumulations will be minor and 
mainly limited to grassy surfaces.

Use caution and reduce speed if traveling into or through this snow 
squall. Rapid changes in visibility could lead to accidents.

LAT...LON 4055 7425 4050 7426 4050 7428 4045 7423
      4042 7425 4034 7463 4038 7462 4039 7470
      4060 7496 4069 7453 4065 7452 4067 7448
      4066 7440 4060 7446 4061 7433 4058 7421
TIME...MOT...LOC 0042Z 307DEG 25KT 4065 7449 4060 7468 4058 7485 

$$

JRK

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 4, 3:20 PM ESTSmall Craft AdvisoryPHI19 hr

Nearby

Special Weather Statements in New Jersey, 2017Every special weather statement in 2017

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.