Temperatures are expected to drop into the teens overnight and freeze wet roads, which should make for slow going in the morning.
After working over the weekend winter storm to clear more than 30 inches of snow, Lehigh Valley road crews were facing another challenge Sunday night.
Temperatures were expected to drop into the teens and freeze wet roads into sheets of compacted ice, said Brian Clavier, a meteorologist with WeatherWorks in Hackettstown.
"That means anything that is wet from the melting that occurs is going to turn to ice," Clavier said.
Clavier said the Monday morning commute will prove to be tricky all week as temperatures will rise during the day into the 40s and 50s, then plummet into the 20s each night.
"This could actually be a problem all week," he said.
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In Bethlehem, city public works Director Mike Alkhal said he's concerned about icy road conditions Monday.
"Work is nowhere near done yet," he said of the cleanup effort.
"It's going to slow us down more and cause more problems for us," Alkhal said. "We keep trying to keep up. It's just keeps going back and forth."
Bethlehem has a snow emergency in effect until 7 p.m. Monday, as does Easton.
"We'll be around the clock for at least a few more shifts," Alkhal said. "We'll still be plowing as much as we can and treating as much as we can."
In Easton, Mayor Sal Panto Jr. said salt trucks would be out all night to prep the streets in time for the morning commute.
"This was a plowable event," Panto said, noting no salt had to be used until now. "The main roads are all water now."
By Sunday night, Panto said most major city streets were cleared.
Easton brought in bigger equipment to supplement the plows with snow removal on the major roads. More narrow streets with vehicles parked on them, however, were challenges to clear.
"They created a tremendous problem for us," Panto said.
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The city is offering free meter parking Monday and Tuesday because both Downtown parking garages are nearly full, he said. The city opens the garages free to city residents during snow emergencies.
Police on Monday plan to shut down portions of Cattell Street on College Hill; Berwick Street on South Side; and Butler Street in the West Ward. Also closed will be portions of Wood Avenue.
Panto said the roads will remain closed until they are passable.
"They need a lot of attention tonight and tomorrow," he said.
Nazareth Mayor Carl Strye Jr. urged residents to be patient as public works crews move from street to street.
Crews have been scraping roads to remove slush and pushing back whatever they can. A cinder/salt mixture is expected to be spread overnight to help with freezing, he said.
Residents need to be reminded to push snow into their yards and not back onto the streets, Strye said.
"This inhibits the cinder/salt mix to work properly," he said.
Warren County Emergency Management Director Frank Wheatley said there were no catastrophes reported during the storm.
Car crashes were minor about 1,300 people were without power for just a short time Saturday in White and Knowlton townships, he said.
No roads are closed and most are passable, according to Wheatley.
Snowfall totals for the Lehigh Valley as of Saturday afternoon
"(Saturday),we went relatively unscathed," he said. "There was nothing serious to speak of."
Wheately said crews are ready for "round two," already treating roadwas and planning to work around the clock.
"We'll be back on top of it tonight," he said.
Pamela Sroka-Holzmann may be reached at pholzmann@lehighvalleylive.com. Follow her on Twitter @pamholzmann. Find lehighvalleylive.com on Facebook.