The National Weather Service has issued a winter storm warning in effect from 1 p.m. today through 6 p.m. S Sunday, with heavy snow expected. Total snow accumulations of 8 to 12 Inches are expected throughout the region.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency.

The latest forecast:

Today: Snow, mainly after 2 p.m. The snow could be heavy at times. High near 33. Light northeast wind becoming east 5 to 10 mph in the morning. Chance of precipitation is 100%. Total daytime snow accumulation of 3 to 5 inches possible.

Tonight: Snow. The snow could be heavy at times. Low around 29. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

Sunday: Rain and snow likely before 1 p.m., then a slight chance of rain between 1 p.m. and 4 p.m. Patchy fog between 8 a.m. and 11 a.m. Otherwise, cloudy, with a high near 37. Northeast wind around 5 mph becoming northwest in the morning. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Sunday Night: Mostly cloudy, with a low around 27. Northwest wind around 10 mph, with gusts as high as 20 mph.

Monday: Mostly sunny, with a high near 40. Northwest wind 10 to 15 mph.

Monday Night: Partly cloudy, with a low around 22.

Tuesday: A chance of snow before 10 a.m., then a chance of rain and snow between 10 a.m. and 1 p.m., then rain after 1 p.m. High near 51. Breezy. Chance of precipitation is 100%.

Tuesday Night: Rain. The rain could be heavy at times. Low around 38. Breezy. Chance of precipitation is 100%.

Wednesday: A chance of showers before 1 p.m. Mostly cloudy, with a high near 48. Breezy. Chance of precipitation is 40%.

Wednesday Night: Mostly cloudy, with a low around 30. Breezy.

Thursday: Mostly sunny, with a high near 42.

Thursday Night: Partly cloudy, with a low around 28.

Friday: Partly sunny, with a high near 43.