Snow Squall Warning 21, NWS Philadelphia/Mount Holly

Issued

Feb 17, 2024, 3:28 PM EST (20:28 UTC)

Expired

Feb 17, 2024, 4:15 PM EST

In force

47 min

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Damage threat

Significant

Counties Hunterdon County, NJ, Berks County, PA, Bucks County, PA, Carbon County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA

The Philadelphia radar (KDIX), 137 km from the middle of the area, began a volume at 20:26 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.

131 
WWUS51 KPHI 172028
SQWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Mount Holly NJ
328 PM EST Sat Feb 17 2024

NJC019-PAC011-017-025-077-091-095-172115-
/O.NEW.KPHI.SQ.W.0021.240217T2028Z-240217T2115Z/
Hunterdon NJ-Berks PA-Lehigh PA-Montgomery PA-Carbon PA-Bucks PA-
Northampton PA-
328 PM EST Sat Feb 17 2024

The National Weather Service in Mount Holly NJ has issued a

* Snow Squall Warning for...
  South central Hunterdon County in northwestern New Jersey...
  Northeastern Berks County in eastern Pennsylvania...
  Lehigh County in eastern Pennsylvania...
  Northwestern Montgomery County in southeastern Pennsylvania...
  South central Carbon County in northeastern Pennsylvania...
  Northwestern Bucks County in southeastern Pennsylvania...
  Southwestern Northampton County in eastern Pennsylvania...

* Until 415 PM EST.

* At 327 PM EST, a dangerous snow squall was located over Zionsville,
  or near Allentown, moving southeast at 40 mph.

  HAZARD...Flash freeze on roads. Intense bursts of heavy snow and 
           gusty winds leading to blowing snow and visibility 
           rapidly falling to less than one-quarter mile. Wind gusts 
           up to 35 mph.

  SOURCE...Radar and trained spotter.

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

This includes the following highways...
 Northeast Extension between mile markers 25 and 72.
 Interstate 78 in Pennsylvania between mile markers 31 and 69.

Locations impacted include...
Allentown, Bethlehem, Lansdale, Emmaus, Northampton, Quakertown,
Perkasie, Doylestown, Byram, Souderton, Bedminster, Hellertown,
Kutztown, Hamburg, Slatington, Fleetwood, Chalfont, Tinicum,
Hatfield, and East Greenville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Wet roadways will quickly freeze. Black ice will cause roads,
bridges, and overpasses to become slick and dangerous. Slow down and
be prepared for a sudden loss of traction.

Slow Down! Rapid changes in visibility and road conditions are
expected with this dangerous snow squall. Be alert for sudden
whiteout conditions.

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.

&&

LAT...LON 4058 7604 4057 7602 4063 7600 4066 7594
      4070 7583 4074 7576 4075 7577 4080 7567
      4043 7496 4017 7531 4058 7605
TIME...MOT...LOC 2027Z 297DEG 35KT 4050 7551 

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

$$

Wunderlin

Snow Squall Warnings in Pennsylvania, 2024Snow Squall Warnings in New Jersey, 2024Every snow squall warning in 2024

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.