Alert archive / New Jersey / Snow Squall Warnings in 2024

Snow Squall Warning 9, NWS Philadelphia/Mount Holly

January 14, 2024Sussex County, Warren County, New Jersey; Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this snow squall warning at Jan 14, 2024, 12:24 PM EST for Sussex County, Warren County, New Jersey; Monroe County, Pennsylvania. It was in force for 28 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
Jan 14, 2024, 12:24 PM EST (17:24 UTC)
Expired
Jan 14, 2024, 12:52 PM EST
In force
28 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Damage threat
Significant

Counties Sussex County, NJ, Warren County, NJ, Monroe County, PA

The radar

The Philadelphia radar (KDIX), 141 km from the middle of the area, began a volume at 17:27 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, 5.4 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2024-01-14Temperature 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 12:00Z on 2024-01-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 square meters per square second.1939587897117136156175Sfc1 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
1372 m above ground
0-6 km bulk shear
84 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
10 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

746 
WWUS51 KPHI 141724
SQWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Mount Holly NJ
1224 PM EST Sun Jan 14 2024

NJC037-041-PAC089-141830-
/O.NEW.KPHI.SQ.W.0009.240114T1724Z-240114T1830Z/
Sussex NJ-Warren NJ-Monroe PA-
1224 PM EST Sun Jan 14 2024

The National Weather Service in Mount Holly NJ has issued a

* Snow Squall Warning for...
  Sussex County in northwestern New Jersey...
  Northern Warren County in northwestern New Jersey...
  Central Monroe County in northeastern Pennsylvania...

* Until 130 PM EST.

* At 1224 PM EST, a dangerous snow squall was located along a line
  extending from near Pecks Pond to near McMichael, moving east at 35
  mph.

  HAZARD...Intense bursts of heavy snow and gusty winds leading to 
           blowing snow and rapidly falling visibility. Wind gusts 
           greater than 35 mph.

  SOURCE...Radar and webcams.

  IMPACT...Dangerous and life-threatening travel conditions are 
           expected to develop rapidly in the warning area.

This includes the following highways...
 Interstate 80 in Pennsylvania between mile markers 293 and 314.
 Interstate 80 in New Jersey between mile markers 0 and 1.
 Interstate 380 in Pennsylvania between mile markers 0 and 5.

Locations impacted include...
Newton, Montague, Mount Pocono, Hopatcong, East Stroudsburg,
Blairstown, Franklin, Hamburg, Ogdensburg, Sussex, Branchville,
Andover, High Point, Henryville, Lake Mohawk, Werry Lake, Greendell,
Millbrook, Pocono Raceway, and Delaware Water Gap.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Consider avoiding or delaying travel until the snow squall passes
your location. If you must travel, use extra caution and allow extra
time. Rapid changes in visibility and slick road conditions may lead
to accidents.

Serious injuries and deaths may result from people exiting their
vehicles during a snow squall. Drivers may not be able to see you or
to stop! If stopped on the roadway or involved in an accident,
quickly exit your vehicle move as far away from the roadway as
possible ONLY when it is safe to do so. Do not stand along or near
the roadway, since approaching vehicles may be unable to maintain
control.

&&

LAT...LON 4120 7437 4097 7464 4093 7465 4099 7550
      4103 7554 4125 7527 4125 7513 4115 7515
      4114 7509 4108 7503 4109 7500 4116 7490
      4129 7483 4135 7475 4136 7470
TIME...MOT...LOC 1724Z 257DEG 30KT 4126 7509 4102 7542 

SNOW SQUALL...OBSERVED
SNOW SQUALL IMPACT...SIGNIFICANT 

$$

MJL
1 follow-up statement
767 
WWUS51 KPHI 141752
SQWPHI

Snow Squall Warning
National Weather Service Mount Holly NJ
1252 PM EST Sun Jan 14 2024

NJC037-041-PAC089-141801-
/O.CAN.KPHI.SQ.W.0009.000000T0000Z-240114T1830Z/
Sussex NJ-Warren NJ-Monroe PA-
1252 PM EST Sun Jan 14 2024

...THE SNOW SQUALL WARNING FOR SUSSEX...NORTHERN WARREN AND CENTRAL
MONROE COUNTIES IS CANCELLED...

The snow squall that prompted the warning has weakened and exited 
the area. Therefore, the snow squall warning has been cancelled. 
Snow showers may still restrict visibilities down to 1 mile at 
times. Heed any additional Snow Squall Warnings if they are issued.

LAT...LON 4120 7437 4097 7464 4093 7465 4099 7550
      4103 7554 4125 7527 4125 7513 4115 7515
      4114 7509 4108 7503 4109 7500 4116 7490
      4129 7483 4135 7475 4136 7470
TIME...MOT...LOC 1746Z 257DEG 30KT 4130 7485 4106 7518 

$$

MJL

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 14, 2:48 AM ESTWind AdvisoryPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more15 hr
Jan 14, 11:07 AM ESTSnow Squall WarningPHIHunterdon, Warren38 min
Jan 14, 11:44 AM ESTSnow Squall WarningPHIHunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset and 2 more61 min
Jan 14, 12:17 PM ESTSnow Squall WarningPHIMercer28 min
Jan 14, 1:31 PM ESTSnow Squall WarningPHIMiddlesex, Monmouth, Ocean29 min
Jan 14, 10:28 AM ESTSnow Squall Warning Significant damage threatPHICarbon, Monroe62 min
Jan 14, 10:43 AM ESTSnow Squall WarningPHIBerks47 min
Jan 14, 11:30 AM ESTSnow Squall Warning Significant damage threatPHICarbon, Monroe60 min
Jan 14, 11:42 AM ESTSnow Squall Warning Significant damage threatPHIBerks, Chester, Montgomery48 min
Jan 14, 11:57 AM ESTSnow Squall WarningPHIChester48 min
Jan 14, 12:28 PM ESTSnow Squall WarningPHIChester20 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.