Alert archive / New Jersey / Snow Squall Warnings in 2022

Snow Squall Warning 5, NWS Philadelphia/Mount Holly

February 19, 20225 counties in New Jersey; 5 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this snow squall warning at Feb 19, 2022, 2:20 PM EST for 5 counties in New Jersey; 5 counties in Pennsylvania. It was in force for 40 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: Feb 19, 2022, 2:20 PM EST (19:20 UTC)
Expired: Feb 19, 2022, 3:00 PM EST
In force: 40 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Somerset County, NJ, Warren County, NJ, Bucks County, PA, Chester County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 58 km from the middle of the area, began a volume at 19:21 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, 7.3 hours before the alert went out and 170 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1350 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: 196 m²/s²
0-3 km storm-relative helicity: 182 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

248 
WWUS51 KPHI 191920
SQWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Mount Holly NJ
220 PM EST Sat Feb 19 2022

NJC019-021-023-035-041-PAC017-029-077-091-095-192000-
/O.NEW.KPHI.SQ.W.0005.220219T1920Z-220219T2000Z/
Hunterdon NJ-Warren NJ-Mercer NJ-Somerset NJ-Middlesex NJ-Lehigh PA-
Montgomery PA-Bucks PA-Chester PA-Northampton PA-
220 PM EST Sat Feb 19 2022

The National Weather Service in Mount Holly NJ has issued a

* Snow Squall Warning for...
  Hunterdon County in northwestern New Jersey...
  Southwestern Warren County in northwestern New Jersey...
  Mercer County in central New Jersey...
  Somerset County in northern New Jersey...
  Northwestern Middlesex County in northern New Jersey...
  Southeastern Lehigh County in eastern Pennsylvania...
  Montgomery County in southeastern Pennsylvania...
  Bucks County in southeastern Pennsylvania...
  North central Chester County in southeastern Pennsylvania...
  South central Northampton County in eastern Pennsylvania...

* Until 300 PM EST.

* At 219 PM EST, a dangerous snow squall was located along a line
  extending from Milford to Norristown, moving east at 45 mph.

  HAZARD...Snow and blowing snow. Wind gusts greater than 40 mph.

  SOURCE...Radar indicated.

  IMPACT...Dangerous life-threatening travel.

* This includes the following highways...
   Pennsylvania Turnpike between mile markers 342 and 349.
   Northeast Extension between mile markers 24 and 50.
   Interstate 78 in Pennsylvania between mile markers 60 and 71.
   Interstate 195 in New Jersey between mile markers 0 and 3.
   Interstate 295 in New Jersey between mile markers 59 and 76.
   Interstate 287 in New Jersey between mile markers 8 and 20.

Locations impacted include...
Allentown, Trenton, Somerville, Somerset, Bethlehem, Bridgewater,
Ewing, Pottstown, Lansdale, Middlesex, East Norriton, Princeton,
Emmaus, Bound Brook, Manville, Quakertown, Perkasie, Doylestown,
Byram and Hatboro.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Reduce your speed and turn on headlights! During snow squalls, the
visibility may suddenly drop to near zero in whiteout conditions.

&&

LAT...LON 4063 7442 4060 7446 4060 7444 4017 7468
      4018 7471 4014 7474 4013 7479 4019 7568
      4063 7544
TIME...MOT...LOC 1919Z 272DEG 37KT 4059 7508 4013 7534 

$$

Fitzsimmons

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 19, 12:18 PM EST	Special Weather Statement	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	3 hr
Feb 19, 1:36 PM EST	Snow Squall Warning	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	54 min
Feb 19, 2:29 PM EST	Special Weather Statement	PHI	Camden, Gloucester	61 min
Feb 19, 2:32 PM EST	Snow Squall Warning	PHI	Hunterdon, Middlesex, Morris, Somerset, Sussex, Warren	28 min
Feb 19, 3:04 PM EST	Special Weather Statement	PHI	Mercer, Middlesex, Monmouth, Somerset	56 min
Feb 19, 12:53 PM EST	Snow Squall Warning	PHI	Carbon, Lehigh, Monroe, Northampton	52 min
Feb 19, 1:19 PM EST	Snow Squall Warning	PHI	Berks, Bucks, Lehigh, Montgomery, Northampton	56 min

Nearby

Snow Squall Warnings in New Jersey, 2022 Snow Squall Warnings in Pennsylvania, 2022 Every snow squall warning in 2022

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.