National Weather Service

Areas near Yellowstone Lake are expected to see two to three inches of snow.

Between Colorado and Wyoming, the watch area includes over 5 million people, 1,524 schools and 79 hospitals, according to the NWS.

The weather service credits rainfall of two to four inches throughout the day and increased runoff from snow melt.

For the latest road conditions, visit WyoRoad.info, call 511 or download the Wyoming 511 app.

Monday's warnings come after Doppler radar and automated rain gauges indicated heavy rain falling on already saturated soil.

Severe thunderstorms are possible in the southeastern portion of the state with the greatest risk coming between 3 and 9 p.m.

For the latest road conditions, visit WyoRoad.info, call 511 or download the Wyoming 511 app.

Snow will have the best chance of accumulating overnight Monday into Tuesday, with a lull Tuesday afternoon.

The special weather statement also includes lower elevations of Natrona County.

Weather will remain dreary through Thursday, but sun and warmer temperatures should return as the week wraps up.

Road surfaces on Casper Mountain could become slick, particularly Wednesday morning.

The advisory is in effect from 9 p.m. Tuesday to 12 p.m. Wednesday.