Edwards Avenue Saturday morning. Photo: Peter Blasl

Updated- March 4, 6 a.m. Riverhead schools will operate on a two-hour delayed opening Monday morning, due to weather and road conditions. 

Updated- 3:45 p.m. Riverhead Town Supervisor Laura Jens-Smith has declared a winter storm emergency as of 6 p.m. Sunday evening. All residents must remove their vehicles from the streets tonight beginning at 6 p.m., Riverhead Police said in a statement.

A winter storm warning issued this morning by the National Weather Service remains in effect through 7 a.m. tomorrow. Total snow accumulations of four to eight inches are expected.

“Weather conditions this evening will make travel hazardous or impossible,” police said in a statement. “Unnecessary travel is not recommended. If you must travel, reduce your speed and leave yourself plenty of time.”

Original story:  A winter storm warning has been issued for Long Island in advance of a coastal storm that’s expected to dump up to six inches of snow across the region tonight, according to the National Weather Service.

A coastal low developing off the mid-Atlantic coast Sunday evening will track northeast across the 40N/70W benchmark,  a point about 100 miles southeast of Montauk Point marked by the coordinates 40 North and 70 West. Most major east coast snowstorms pass over or near the 40/70 benchmark as they move north-northeast. forecasters say. Forecasters say this coastal low will move very rapidly through the region.

Heavier snow and higher accumulations are expected in New York City and western areas of the region.

Precipitation will begin as rain across eastern Long Island this afternoon and change over to snow in the evening, according to the forecast. The heaviest snow is expected overnight. Rain may mix in with snow across the East End overnight

Accumulations of four to eight inches are expected, the National Weather Service says.

The winter storm warning is in effect from 1 p.m. today thought 7 a.m. tomorrow morning.

Travel could be very difficult, the weather service said. The hazardous conditions could impact those traveling Sunday night, and the Monday morning commute.

This story is free to read thanks in part to the generous support of readers like you. Keep local news free. Become a member today.