Heavy spring snow and rain are expected to make travel difficult across Wyoming beginning late Wednesday and continuing through early Saturday.

The Wyoming Department of Transportation predicts moderate to high impacts on all Wyoming roads and highways, particularly Interstate 80 and Interstate 25. All interstates and mountain passes are expected to be impacted by rain, snow and fog.

DayWeather Meteorologist Don Day says Wednesday night and Thursday morning will bring rain and snow showers to western, central and southeastern Wyoming. Conditions along the I-80 corridor will become wet and slick.

Rain, snow and fog will develop across central Wyoming late Wednesday and early Thursday.

All of Wyoming is expected to see developing areas of rain, snow showers and areas of fog on Thursday.

Heavy, wet snow is forecast for central Wyoming overnight Thursday and into Friday morning.

Friday afternoon, Friday night and Saturday morning will see the rain, snow and fog of concern to travelers shifting into the southeastern portion of the state to include Elk Mountain, Casper, Midwest, Douglas and Lusk.

The National Weather Service in Riverton says rain and snow are likely in the Casper area after 3 a.m. Thursday, but little to no snow accumulation is expected.

Rain and snow are likely Thursday morning, becoming all rain after noon. Snow accumulation, if any, is unlikely to be greater than half an inch.

Thursday night will bring rain and snow to the Casper area, becoming entirely snow after midnight with expected accumulation of one to three inches.

Snow is likely before noon on Friday, with rain and snow likely after noon. New snow accumulation of two to four inches is possible.

Friday night's forecast calls for a 40 percent chance of snow, mainly before midnight. Saturday will bring isolated snow showers before noon, after which precipitation should taper off -- but isolated showers are slated to return to the area on Monday.

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