Long Island Weather: Hour-By-Hour Snow Forecast

A winter weather advisory has been expanded to all of Long Island as a quick-moving storm gets set to drop 2-4 inches of snow on the region Friday.

There's about a 40-50 percent chance of more than 2 inches accumulating, the National Weather Service says.

"Plan on snow covered roads, including during the evening commute," says the winter weather advisory, which will be in effect until 1 a.m. Saturday.

Check out the hour-by-hour forecast below:

2 p.m.- 30 degrees, 33 percent chance of snow

3 p.m.- 30 degrees, 60 percent chance of snow

4 p.m.- 29 degrees, 73 percent chance of snow

5 p.m.- 29 degrees, 86 percent chance of snow

6 p.m.- 27 degrees, 86 percent chance of snow

7 p.m.- 27 degrees, 85 percent chance of snow

8 p.m.- 28 degrees, 85 percent chance of snow

9 p.m.- 28 degrees, 21 percent chance of snow

10 p.m.- 27 degrees, 21 percent chance of snow

11 p.m.- 27 degrees, 21 percent chance of snow

Midnight- 26 degrees, 21 percent chance of snow

1 a.m.: 25 degrees, 6 percent chance of snow