Alert archive / New Jersey / Snow Squall Warnings in 2024
Snow Squall Warning 47, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this snow squall warning at Dec 5, 2024, 9:56 AM EST for Bucks County, Pennsylvania; 5 counties in New Jersey. It was in force for 20 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 5, 2024, 9:56 AM EST (14:56 UTC)
- Expired
- Dec 5, 2024, 10:16 AM EST
- In force
- 20 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Morris County, NJ, Somerset County, NJ, Bucks County, PA
The radar
The Philadelphia radar (KDIX), 66 km from the middle of the area, began a volume at 14:57 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 133 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 889 m above ground
- 0-6 km bulk shear
- 83 kt
- 0-1 km storm-relative helicity
- 210 m²/s²
- 0-3 km storm-relative helicity
- 270 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
475
WWUS51 KPHI 051456
SQWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Mount Holly NJ
956 AM EST Thu Dec 5 2024
NJC019-021-023-027-035-PAC017-051545-
/O.NEW.KPHI.SQ.W.0047.241205T1456Z-241205T1545Z/
Hunterdon NJ-Morris NJ-Mercer NJ-Somerset NJ-Middlesex NJ-Bucks PA-
956 AM EST Thu Dec 5 2024
The National Weather Service in Mount Holly NJ has issued a
* Snow Squall Warning for...
Southeastern Hunterdon County in northwestern New Jersey...
Southeastern Morris County in northern New Jersey...
Mercer County in central New Jersey...
Somerset County in northern New Jersey...
Middlesex County in northern New Jersey...
Central Bucks County in southeastern Pennsylvania...
* Until 1045 AM EST.
* At 956 AM EST, a dangerous snow squall was located along a line
extending from near Newark to Colonia to Hopewell to near Chalfont,
moving east at 45 mph.
HAZARD...Intense bursts of heavy snow and gusty winds leading to
rapidly falling visibility. Wind gusts greater than 35
mph.
SOURCE...Radar and webcams.
IMPACT...Travel will become difficult and potentially dangerous
within minutes.
This includes the following highways...
New Jersey Turnpike between exits 8A and 12.
Interstate 78 in New Jersey between mile markers 35 and 43.
Interstate 295 in New Jersey between mile markers 66 and 75.
Interstate 287 in New Jersey between mile markers 0 and 19.
Garden State Parkway between mile markers 121 and 133.
Locations impacted include...
New Brunswick, Perth Amboy, Somerville, Somerset, Edison, Old Bridge,
East Brunswick, Bridgewater, South Brunswick, Sayreville, North
Brunswick, Ewing, Carteret, Middlesex, Princeton, Bound Brook,
Manville, Chatham, Matawan, and Doylestown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow Down! Rapid changes in visibility and road conditions are
expected with this dangerous snow squall.
Reduce speed and turn on headlights! During snow squalls, the
visibility may suddenly drop to near zero in whiteout conditions.
&&
LAT...LON 4056 7421 4055 7425 4050 7426 4050 7428
4045 7423 4040 7425 4027 7441 4023 7450
4031 7525 4076 7436 4074 7437 4067 7446
4066 7445 4067 7441 4065 7440 4060 7446
4059 7420
TIME...MOT...LOC 1456Z 260DEG 38KT 4072 7421 4058 7434 4041 7475 4032
7518
SNOW SQUALL...OBSERVED
$$
Gorse1 follow-up statement
938
WWUS51 KPHI 051516
SQWPHI
Snow Squall Warning
National Weather Service Mount Holly NJ
1016 AM EST Thu Dec 5 2024
NJC019-021-023-027-035-PAC017-051525-
/O.CAN.KPHI.SQ.W.0047.000000T0000Z-241205T1545Z/
Hunterdon NJ-Morris NJ-Mercer NJ-Somerset NJ-Middlesex NJ-Bucks PA-
1016 AM EST Thu Dec 5 2024
...THE SNOW SQUALL WARNING FOR SOUTHEASTERN HUNTERDON...SOUTHEASTERN
MORRIS...MERCER...SOMERSET...MIDDLESEX AND CENTRAL BUCKS COUNTIES IS
CANCELLED...
The snow squall that prompted the warning has weakened and
temperatures are near 40 degrees ahead of the remaining brief band
of snow or rain showers. Therefore, the snow squall warning has been
cancelled.
LAT...LON 4056 7421 4055 7425 4050 7426 4050 7428
4045 7423 4040 7425 4027 7441 4023 7450
4031 7525 4076 7436 4074 7437 4067 7446
4066 7445 4067 7441 4065 7440 4060 7446
4059 7420
TIME...MOT...LOC 1511Z 260DEG 38KT 4075 7400 4061 7413 4044 7455 4035
7498
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 5, 8:39 AM EST | Snow Squall Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 36 min |
| Dec 5, 8:45 AM EST | Snow Squall Warning | PHI | Carbon, Monroe | 45 min |
| Dec 5, 9:15 AM EST | Snow Squall Warning | PHI | Berks, Bucks, Chester, Lehigh, Montgomery | 45 min |
| Dec 5, 9:23 AM EST | Snow Squall Warning | PHI | Monroe, Northampton | 52 min |
Nearby
Snow Squall Warnings in New Jersey, 2024Snow Squall Warnings in Pennsylvania, 2024Every snow squall warning in 2024
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.