Dense fog is expected to persist through at least sunrise and may continue through much of the morning commute.

Limited visibilities will make travel very difficult.

A dense fog advisory means visibilities will frequently be reduced to less than one quarter mile. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

The latest forecast:

Today: Otherwise, mostly sunny, with a high near 48. West wind 11 to 15 mph, with gusts as high as 25 mph. Monday Night: Mostly cloudy, with a low around 32. West wind 9 to 11 mph.

Tuesday: Mostly sunny, with a high near 37. Northwest wind around 9 mph.

Tuesday Night: Mostly clear, with a low around 23. Northwest wind 3 to 7 mph.

Wednesday: Mostly sunny, with a high near 35.

Wednesday Night: Mostly cloudy, with a low around 24.

Thursday: Mostly sunny, with a high near 36.

Thursday Night: A chance of snow showers after 8 p.m. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.

Friday: A chance of snow showers before 8 a.m. Mostly sunny, with a high near 35. Chance of precipitation is 30%.