Commuters Wednesday morning can expect icy road conditions following overnight lows in the low 20s after Tuesday's snowstorm, forecasters said.
Any standing water will freeze, "creating icy patches on untreated roadways," said Joe Pollina, a National Weather Service meteorologist in Upton.
A special weather statement was issued Tuesday warning of "slick conditions" following Tuesday's "light snowfall event" with roads "wet or covered with snow and ice."
Crews were to be out overnight "monitoring and treating any icy areas," said Eileen W. Peters, spokeswoman for the state Department of Transportation.
Long Island's towns responded aggressively to the first significant snowfall, including the Town of Brookhaven, which was roundly criticized for a lackluster response to a February blizzard that left streets buried for days.
Brookhaven sent hundreds of workers out early Tuesday to spread salt, sand and saltwater on town roads in preparation for the storm.
Other towns also spread salt and sand and plowed roads to keep ice and snow from building up. North Hempstead officials credited the use of Epoke machines, which create a salt and water mixture, for preventing hazardous road conditions.
By 7:30 p.m., all Long Island Rail Road lines except Montauk reflected "good service," according to the MTA website, which also said that crews had been out sanding and salting platforms. Montauk line was about 10 minutes later due to congestion at Jamaica station, the site said.
With temperatures heading down Tuesday night, officials reminded travelers "to be on the lookout for icy conditions, take extra care when walking on platforms, and hold the handrail when walking on stairways," the MTA said.
Tuesday's snowfall dropped 2.5 inches in Plainview, 1.8 inches in Wantagh and 1.7 inches in Stony Brook, according to trained weather spotters, the weather service said. Long Island MacArthur Airport recorded just nine-tenths of an inch by early Tuesday afternoon, Stark said, breaking a 2010 day's record of a trace amount.
The snow prompted some schools to announce early releases Tuesday, with other schools and groups also canceling afternoon activities.
The area's three major airports -- Long Island MacArthur, Kennedy and LaGuardia -- experienced some weather-related delays in arrivals and departures, according to the Federal Aviation Administration website: www.fly.faa.gov
Some arriving flights at LaGuardia and Kennedy had delays of about 15 minutes, down from an hour earlier, by 7:30 Tuesday night, the FAA said.
With Gary Dymski
and Jennifer Barrios