Speed limits have been reduced on major thoroughfares.
The snow is changing over to sleet and freezing rain, and, as expected, is slowing travel around the Lehigh Valley.
A PennDOT traffic camera shows I-78 on Dec. 17, 2016, after an overnight snowfall. The National Weather Service says between 1 and 3 inches of snow was expected for the area. A tenth to quarter-inch of ice is also possible, creating "treacherous driving conditions."
PennDOT on Saturday morning announced temporary speed limit reductions on the region's main thoroughfares. That means 45 mph on Interstates 78, 80, 81, 176 and 380; and on Routes 22, 209, 222, 422, 33 and 309.
Motorists are urged not to drive anywhere, but warned that if they do, PennDOT is keeping roads passable but not necessarily completely clear.
How to track road conditions and snow plows
A number of accidents were reported around the region early Saturday morning. All appear to have since been cleared.
- A jackknifed tractor trailer had all eastbound lanes of I-80 closed in New Jersey at Exit 28 for Roxbury Township, Morris County.
- An accident on I-78 east in Hunterdon County had the left lane closed near Exit 7 for Route 173.
- The left lane was closed on I-78 east just after the Route 309 exit.
- At least one lane in both directions of the Northeast Extension were blocked tnear Lansdale.
Flights at Lehigh Valley International Airport all appeared to be on time.
No major power outages had been reported as of 8 a.m.
Steve Novak may be reached at snovak@njadvancemedia.com. Follow him on Twitter @type2supernovak and Facebook. Find lehighvalleylive.com on Facebook.