Alert archive / Pennsylvania / Snow Squall Warnings in 2022

Snow Squall Warning 2, NWS Philadelphia/Mount Holly

February 19, 20224 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this snow squall warning at Feb 19, 2022, 12:53 PM EST for 4 counties in Pennsylvania. It was in force for 52 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, 12:53 PM EST (17:53 UTC)
Expired
Feb 19, 2022, 1:45 PM EST
In force
52 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA

The radar

The Binghamton radar (KBGM), 139 km from the middle of the area, began a volume at 17:55 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, 5.9 hours before the alert went out and 217 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 2022-02-19Temperature 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 2022-02-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 196 square meters per square second.1939587897117136Sfc1 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
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.

000 
WWUS51 KPHI 191753
SQWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Mount Holly NJ
1253 PM EST Sat Feb 19 2022

PAC025-077-089-095-191845-
/O.NEW.KPHI.SQ.W.0002.220219T1753Z-220219T1845Z/
Lehigh PA-Carbon PA-Monroe PA-Northampton PA-
1253 PM EST Sat Feb 19 2022

The National Weather Service in Mount Holly NJ has issued a

* Snow Squall Warning for...
  Northern Lehigh County in eastern Pennsylvania...
  Carbon County in northeastern Pennsylvania...
  Monroe County in northeastern Pennsylvania...
  Northampton County in eastern Pennsylvania...

* Until 145 PM EST.

* At 1251 PM EST, a dangerous snow squall was located along a line
  extending from Mount Cobb to Mcadoo, moving east at 45 mph.

  HAZARD...Extremely poor visibility in snow and blowing snow. Wind 
           gusts greater than 40 mph.

  SOURCE...Radar indicated.

  IMPACT...Dangerous life-threatening travel.

* This includes the following highways...
   Northeast Extension between mile markers 61 and 97.
   Interstate 78 in Pennsylvania between mile markers 67 and 69.
   Interstate 80 in Pennsylvania between mile markers 277 and 314.
   Interstate 80 in New Jersey near mile marker 3.
   Interstate 380 in Pennsylvania between mile markers 0 and 13.

Locations impacted include...
Allentown, Lehighton, Mount Pocono, Bethlehem, Northampton, East
Stroudsburg, Tobyhanna, Hellertown, Nazareth, Palmerton, Bangor, Jim
Thorpe, Slatington, Pen Argyl, Nesquehoning, Wind Gap, Bath,
Weatherly, Walnutport and Belfast.

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 4115 7515 4114 7509 4108 7501 4103 7504
      4098 7514 4094 7510 4059 7532 4069 7583
      4074 7576 4091 7599 4101 7573 4105 7577
      4108 7577 4113 7569 4112 7564 4123 7554
      4125 7513
TIME...MOT...LOC 1751Z 277DEG 39KT 4143 7553 4091 7598 

$$

Fitzsimmons
1 follow-up statement
403 
WWUS51 KPHI 191832
SQWPHI

Snow Squall Warning
National Weather Service Mount Holly NJ
132 PM EST Sat Feb 19 2022

PAC025-077-089-095-191845-
/O.CON.KPHI.SQ.W.0002.000000T0000Z-220219T1845Z/
Lehigh PA-Carbon PA-Monroe PA-Northampton PA-
132 PM EST Sat Feb 19 2022

...A SNOW SQUALL WARNING REMAINS IN EFFECT UNTIL 145 PM EST FOR
NORTHERN LEHIGH...CARBON...MONROE AND NORTHAMPTON COUNTIES...

At 131 PM EST, a dangerous snow squall was located along a line
extending from near Echo Lake to Northampton, moving southeast at 45
mph.

HAZARD...Extremely poor visibility in snow and blowing snow. Wind 
         gusts greater than 40 mph.

SOURCE...Radar indicated.

IMPACT...Dangerous life-threatening travel.

This includes the following highways...
 Northeast Extension between mile markers 62 and 91.
 Interstate 78 in Pennsylvania between mile markers 68 and 69.
 Interstate 80 in Pennsylvania between mile markers 285 and 314.
 Interstate 80 in New Jersey near mile marker 3.
 Interstate 380 in Pennsylvania between mile markers 0 and 13.

Locations impacted include...
Allentown, Lehighton, Mount Pocono, Bethlehem, Northampton, East
Stroudsburg, Tobyhanna, Hellertown, Nazareth, Palmerton, Bangor, Jim
Thorpe, Slatington, Pen Argyl, Wind Gap, Bath, Walnutport, Belfast,
Tatamy and East Bangor.

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 4070 7578 4072 7579 4074 7576 4080 7585
      4081 7585 4123 7553 4123 7552 4125 7513
      4115 7515 4114 7509 4108 7501 4103 7504
      4098 7514 4094 7510 4059 7532
TIME...MOT...LOC 1831Z 293DEG 40KT 4108 7511 4066 7550 

$$

Fitzsimmons

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 19, 12:18 PM ESTSpecial Weather StatementPHIBerks, Bucks, Carbon, Lehigh, Monroe, Montgomery and 1 more3 hr
Feb 19, 1:19 PM ESTSnow Squall WarningPHIBerks, Bucks, Lehigh, Montgomery, Northampton56 min
Feb 19, 1:36 PM ESTSnow Squall WarningPHIBucks, Lehigh, Monroe, Northampton54 min
Feb 19, 2:20 PM ESTSnow Squall WarningPHIBucks, Chester, Lehigh, Montgomery, Northampton40 min
Feb 19, 2:29 PM ESTSpecial Weather StatementPHIChester, Delaware, Philadelphia61 min

Nearby

Snow Squall Warnings in Pennsylvania, 2022Every 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.