Alert archive / New Jersey / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

December 2, 2021Mercer County, Middlesex County, Monmouth County, New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Dec 2, 2021, 10:29 PM EST for Mercer County, Middlesex County, Monmouth County, New Jersey; Bucks County, Pennsylvania. It was in force for 46 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
Dec 2, 2021, 10:29 PM EST (03:29 UTC)
Expired
Dec 2, 2021, 11:15 PM EST
In force
46 min
Issued by
NWS Philadelphia/Mount Holly
Hail
0.25 in
Wind
50

Counties Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 40 km from the middle of the area, began a volume at 03:29 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, 3.5 hours before the alert went out and 140 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 2021-12-03Temperature 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 2021-12-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 353 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
1175 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
353 m²/s²
0-3 km storm-relative helicity
345 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

050 
WWUS81 KPHI 030329
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
1029 PM EST Thu Dec 2 2021
 
NJZ009-010-012>015-PAZ105-106-030415-
Hunterdon NJ-Eastern Monmouth NJ-Western Monmouth NJ-Somerset NJ-
Middlesex NJ-Mercer NJ-Lower Bucks PA-Upper Bucks PA-
1029 PM EST Thu Dec 2 2021

...Strong showers with embedded thunderstorms will impact portions 
of southeastern Hunterdon, Mercer, southwestern Somerset, Monmouth, 
Middlesex and east central Bucks Counties through 1115 PM EST...

At 1027 PM EST, Doppler radar indicated strong showers with embedded 
thunderstorms along a line extending from near Keansburg to Kendall 
Park to Stockton. These showers have a history of producing brief 
wind gusts up to 45 mph. Movement was east at 55 mph.

HAZARD...Wind gusts up to 45 mph and pea size hail.

SOURCE...Doppler radar and automated gauges.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
Trenton, Long Branch, Asbury Park, Sandy Hook, Middletown, Old
Bridge, Howell, East Brunswick, South Brunswick, Sayreville, North
Brunswick, Marlboro, Manalapan, Ewing, Tinton Falls, Holmdel,
Princeton, Red Bank, Keansburg and Matawan.

This includes the following highways...
 New Jersey Turnpike between exits 8 and 9.
 Interstate 195 in New Jersey between mile markers 0 and 16, and
between mile markers 24 and 34.
 Interstate 295 in New Jersey between mile markers 59 and 76.
 Garden State Parkway between mile markers 98 and 125.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 4017 7397 4015 7426 4017 7440 4015 7444
      4014 7463 4018 7471 4014 7473 4014 7481
      4027 7509 4038 7521 4049 7427 4044 7420
      4046 7418 4045 7413 4041 7400 4041 7399
      4048 7402 4048 7401 4043 7397
TIME...MOT...LOC 0327Z 282DEG 48KT 4045 7417 4043 7458 4039 7498 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

$$

Meola

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 2, 8:00 PM ESTSpecial Weather StatementPHISussex45 min
Dec 2, 8:48 PM ESTSpecial Weather StatementPHIMorris, Sussex, Warren42 min
Dec 2, 9:47 PM ESTSpecial Weather StatementPHIHunterdon, Middlesex, Morris, Somerset, Warren43 min
Dec 2, 8:19 PM ESTSpecial Weather StatementPHICarbon41 min

Nearby

Special Weather Statements in New Jersey, 2021Special Weather Statements in Pennsylvania, 2021Every special weather statement in 2021

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.