UPDATE: 9:15 a.m.-Interstate 80 has now re-opened in the Cheyenne area, but local roadways are reporting slick conditions and black ice in many areas, so caution is advised.

UPDATE : 6:13 a.m. Interstate 80 eastbound is now closed from the College drive exit to exit 377.

UPDATE 5:30 a.m.--Interstate 80 eastbound is now closed from College Drive to the Nebraska state line.

As of 4 a.m. interstates 80 and 25 were both open across Wyoming, but less-than-ideal travel conditions were being reported in the Cheyenne area.

Winter weather advisories were in effect for both Cheyenne and Laramie at last report, with much of the rest of southeast Wyoming under winter storm warnings, according to the National Weather Service.

That's according to the Wyoming Department of Transportation road and travel report. On interstate 25, a "no unnecessary travel" warning was posted for the stretch between Cheyenne and Whittaker Road. Black ice was reported on most of I-25 except the portion between the city and the Colorado state line.

But that stretch of highway was reporting strong winds and blowing snow.

Conditions on I-80 in the Cheyenne area were similar, with black ice being reported everywhere and a "no unnecessary travel" warning posted between the Archer Interchange and exit 377. The latest report on local and state travel conditions can be accessed here or by calling 511.