-20 Windchills, Sub-Zero Temperatures Expected In SE Wyoming

UPDATE: The Winter Weather Advisory area has been expanded to include both Cheyenne and Laramie.

A Winter Weather Advisory has been issued from some areas of southeast Wyoming starting on Wednesday night and going into Friday morning.

Cheyenne and Laramie are so far just outside of the advisory area. But the summit on interstate 80 is included, as are many higher elevations in the

That's according to the Cheyenne Office of the National Weather Service. The agency posted this statement on its website:

Winter Weather Advisory is in effect from 11pm tonight through 5AM Friday for areas highlighted above. Additional snow accumulations of 3 to 8 inches are possible, with strong winds up to 40 mph through that time. Strong winds will possibly cause reductions in visibility due to blowing snow.

Here is the forecast for Laramie:

Today

Mostly sunny, with a high near 25. Wind chill values between -5 and 5. Blustery, with a west northwest wind 20 to 25 mph, with gusts as high as 40 mph.

Tonight

Snow likely after 11pm. Mostly cloudy, with a low around 9. Wind chill values between zero and 5. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Thursday

Snow. Patchy fog before 4pm, then patchy fog after 5pm. Temperature falling to around 6 by 5pm. Wind chill values between -10 and zero. North northwest wind around 15 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

Thursday Night

A 50 percent chance of snow. Mostly cloudy, with a low around -6. Wind chill values between -10 and -20. North northeast wind around 10 mph becoming west northwest after midnight.

Friday

Sunny, with a high near 11. Blustery, with a west northwest wind 15 to 20 mph.

Here is the Cheyenne forecast:

Today

A 20 percent chance of snow before 9am. Mostly sunny, with a high near 37. Breezy, with a northwest wind 20 to 25 mph, with gusts as high as 30 mph.

Tonight

Snow likely, mainly after 2am. Mostly cloudy, with a low around 15. Northwest wind 10 to 15 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Thursday

Snow. Temperature rising to near 20 by 10am, then falling to around 12 during the remainder of the day. Wind chill values between -5 and 5. Blustery, with a north wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

Thursday Night

A 50 percent chance of snow. Mostly cloudy, with a low around 0. Wind chill values between -5 and -15. North wind around 15 mph.

Friday

Sunny, with a high near 24. Northwest wind 10 to 15 mph.

Friday Night

Mostly clear, with a low around 9. Blustery.