Alert archive / Pennsylvania / Snow Squall Warnings in 2024
Snow Squall Warning 41, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this snow squall warning at Dec 3, 2024, 3:41 PM EST for Sussex County, Warren County, New Jersey; 4 counties in Pennsylvania. It was in force for 49 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 3, 2024, 3:41 PM EST (20:41 UTC)
- Expired
- Dec 3, 2024, 4:30 PM EST
- In force
- 49 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Sussex County, NJ, Warren County, NJ, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 129 km from the middle of the area, began a volume at 20:42 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, 8.7 hours before the alert went out and 196 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
- 1044 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
060
WWUS51 KPHI 032041
SQWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Mount Holly NJ
341 PM EST Tue Dec 3 2024
NJC037-041-PAC025-077-089-095-032130-
/O.NEW.KPHI.SQ.W.0041.241203T2041Z-241203T2130Z/
Sussex NJ-Warren NJ-Lehigh PA-Carbon PA-Monroe PA-Northampton PA-
341 PM EST Tue Dec 3 2024
The National Weather Service in Mount Holly NJ has issued a
* Snow Squall Warning for...
Southwestern Sussex County in northwestern New Jersey...
Northern Warren County in northwestern New Jersey...
Northwestern Lehigh County in eastern Pennsylvania...
Carbon County in northeastern Pennsylvania...
Monroe County in northeastern Pennsylvania...
Northampton County in eastern Pennsylvania...
* Until 430 PM EST.
* At 340 PM EST, a dangerous snow squall was located along a line
extending from Flatbrookville to near Hometown, moving southeast at
25 mph.
HAZARD...Whiteout conditions with near zero visibility associated
with intense bursts of heavy snow and gusty winds leading
to blowing snow. Wind gusts up to 35 mph.
SOURCE...Radar and webcams.
IMPACT...Travel will become difficult and potentially dangerous
within minutes.
This includes the following highways...
Northeast Extension between mile markers 61 and 97.
Interstate 80 in Pennsylvania between mile markers 278 and 314.
Interstate 80 in New Jersey between mile markers 0 and 23.
Interstate 380 in Pennsylvania between mile markers 0 and 4.
Locations impacted include...
Newton, Lehighton, Mount Pocono, Hopatcong, Northampton, East
Stroudsburg, Hackettstown, Blairstown, Nazareth, Palmerton, Bangor,
Mount Arlington, Jim Thorpe, Slatington, Stanhope, Pen Argyl,
Nesquehoning, Netcong, Wind Gap, and Bath.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Reduce speed and turn on headlights! During snow squalls, the
visibility may suddenly drop to near zero in whiteout conditions.
&&
LAT...LON 4096 7463 4092 7465 4090 7471 4092 7473
4091 7476 4087 7481 4059 7576 4068 7588
4074 7576 4091 7599 4101 7573 4108 7577
4113 7570 4113 7506 4108 7503 4113 7494
4113 7490
TIME...MOT...LOC 2040Z 307DEG 22KT 4109 7497 4085 7596
SNOW SQUALL...OBSERVED
$$
Hoeflich2 follow-up statements
712
WWUS51 KPHI 032103
SQWPHI
Snow Squall Warning
National Weather Service Mount Holly NJ
403 PM EST Tue Dec 3 2024
NJC037-032113-
/O.CAN.KPHI.SQ.W.0041.000000T0000Z-241203T2130Z/
Sussex NJ-
403 PM EST Tue Dec 3 2024
...THE SNOW SQUALL WARNING FOR SOUTHWESTERN SUSSEX COUNTY IS
CANCELLED...
The snow squall that prompted the warning has weakened. Therefore,
the snow squall warning has been cancelled.
LAT...LON 4065 7585 4068 7587 4074 7576 4091 7599
4101 7573 4103 7574 4100 7565 4111 7542
4085 7488 4059 7576
TIME...MOT...LOC 2103Z 315DEG 20KT 4094 7513 4077 7583
$$
NJC041-PAC025-077-089-095-032130-
/O.CON.KPHI.SQ.W.0041.000000T0000Z-241203T2130Z/
Warren NJ-Lehigh PA-Carbon PA-Monroe PA-Northampton PA-
403 PM EST Tue Dec 3 2024
...A SNOW SQUALL WARNING REMAINS IN EFFECT UNTIL 430 PM EST FOR
CENTRAL WARREN...NORTHWESTERN LEHIGH...CARBON...SOUTHWESTERN MONROE
AND NORTHAMPTON COUNTIES...
At 403 PM EST, a dangerous snow squall was located along a line
extending from near Columbia to near New Mahoning, moving southeast
at 25 mph.
HAZARD...Whiteout conditions with near zero visibility associated
with intense bursts of heavy snow and gusty winds leading
to blowing snow. Wind gusts up to 35 mph.
SOURCE...Radar and webcams.
IMPACT...Travel will become difficult and potentially dangerous
within minutes.
This includes the following highways...
Northeast Extension between mile markers 61 and 88.
Interstate 80 in Pennsylvania between mile markers 292 and 312.
Interstate 80 in New Jersey between mile markers 2 and 7.
Interstate 380 in Pennsylvania between mile markers 0 and 2.
Locations impacted include...
Lehighton, Northampton, East Stroudsburg, Nazareth, Palmerton,
Bangor, Jim Thorpe, Slatington, Pen Argyl, Nesquehoning, Wind Gap,
Bath, Belvidere, Weatherly, Oxford, Walnutport, Belfast, Tatamy, East
Bangor, and Delaware Water Gap.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Reduce speed and turn on headlights! During snow squalls, the
visibility may suddenly drop to near zero in whiteout conditions.
&&
LAT...LON 4065 7585 4068 7587 4074 7576 4091 7599
4101 7573 4103 7574 4100 7565 4111 7542
4085 7488 4059 7576
TIME...MOT...LOC 2103Z 315DEG 20KT 4094 7513 4077 7583
SNOW SQUALL...OBSERVED
$$
Hoeflich014
WWUS51 KPHI 032124
SQWPHI
Snow Squall Warning
National Weather Service Mount Holly NJ
424 PM EST Tue Dec 3 2024
NJC041-PAC025-077-089-095-032132-
/O.EXP.KPHI.SQ.W.0041.000000T0000Z-241203T2130Z/
Warren NJ-Lehigh PA-Carbon PA-Monroe PA-Northampton PA-
424 PM EST Tue Dec 3 2024
...THE SNOW SQUALL WARNING FOR CENTRAL WARREN...NORTHWESTERN
LEHIGH...CARBON...SOUTHWESTERN MONROE AND NORTHAMPTON COUNTIES WILL
EXPIRE AT 430 PM EST...
The snow squall that prompted the warning has exited the area for
Carbon and Monroe County. Therefore, the snow squall warning will be
allowed to expire. A Snow Squall Warning was reissued for central
Warren County, Lehigh County, and Northampton County. Refer to that
bulletin with the updated information.
LAT...LON 4065 7585 4068 7587 4074 7576 4091 7599
4101 7573 4103 7574 4100 7565 4111 7542
4085 7488 4059 7576
TIME...MOT...LOC 2122Z 307DEG 22KT 4087 7501 4070 7571
$$
HoeflichThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 3, 3:03 PM EST | Wind Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more | 55 hr |
| Dec 3, 3:43 PM EST | Gale Warning | PHI | 62 hr | |
| Dec 3, 3:43 PM EST | Small Craft Advisory | PHI | 26 hr | |
| Dec 3, 4:20 PM EST | Snow Squall Warning | PHI | Hunterdon, Morris, Warren | 25 min |
| Dec 3, 3:21 PM EST | Snow Squall Warning | PHI | Carbon, Monroe | 24 min |
Nearby
Snow Squall Warnings in Pennsylvania, 2024Snow Squall Warnings in New Jersey, 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.