ST. GEORGE — A winter weather advisory will be in effect from noon Wednesday through 11 p.m. Thursday for Utah’s Southern Mountains, the counties of Washington, Iron, Beaver, Garfield and Kane and the towns of Brian Head and Alton.

Included in the advisory is Mohave County, Arizona, where the alert runs from 1 p.m. Wednesday through 5 a.m. Thursday MST.

The National Weather Service said in a news release that snow accumulations of 5-10 inches are expected. Motorists should plan for slippery road conditions and are reminded to slow down and use caution while traveling.

The Utah Highway Patrol also reminds drivers to be mindful of some useful practices while you’re behind the wheel negotiating winter road conditions:

• The posted speed limit is for dry, ideal conditions. If it’s wet, snowy or icy, you should be going under the speed limit.
• Accelerate slowly, brake gently and don’t turn quickly.
• Snow and slush can form ridges between lanes that can be really slippery and can cause you to lose control. Avoid them if possible.
• Crash risk increases in bad weather. Seat belts save lives.
• Place coats or blankets around children once the harness is snug and secure.
• Four-wheel drive helps with traction but doesn’t help with stopping and turning. And it can create a false sense of security – you still need to slow down.
• Use extra caution on bridges – the road on either side may just be wet, but the bridge may be icy.
• If you find yourself behind a snowplow, stay behind it and use extreme caution if you pass. Never pass on the right.
• If you start to skid, ease off the gas and turn in the direction the back of your car is going.
• Snow left on your vehicle can be hazardous. If it hardens, it can fly off and cause damage.
• If a trip isn’t essential, stay home and enjoy the snow with a warm fire and a good book. Or binge-watch your favorite show.

The NWS forecast for Brian Head follows:

Snow Wednesday after 11 a.m. with a high near 21 and wind chill as low as -3. Breezy, with a south wind 20-24 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New snow accumulation of 1-2 inches possible. Wednesday night snow could be heavy at times. Low around 11. Wind chill as low as -1. South southwest wind -11 mph becoming north northwest after midnight. Chance of precipitation is 100%. New snow accumulation of 3-7 inches possible. Snow Thursday with a high near 16. North northwest wind 10-18 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

The National Weather Service forecast for St. George follows:

Mostly cloudy Tuesday night, then gradually becoming mostly clear, with a low around 34. Calm wind becoming east 5-9 mph in the evening. Wednesday: rain likely after 11 a.m. Increasing clouds, with a high near 47. East wind 9-13 mph becoming southwest in the afternoon. Chance of precipitation is 70%, with rain before 11 p.m. and then rain and snow are lifely. Low around 32. Calm wind becoming northwest around 6 mph in the evening. Chance of precipitation is 90%. Little or no snow accumulation expected. Thursday there’s a slight chance of rain and snow before 11 a.m., then a slight chance of rain. Partly sunny, with a high near 47.

The NWS forecast for Cedar City follows:

Mostly cloudy Tuesday night with a low around 28. East wind 5-8 mph. Snow likely Wednesday after 11 a.m. with increasing clouds and a high near 40. East wind 6-16 mph becoming southwest in the afternoon. Chance of precipitation is 70%. New snow accumulation of less than a half inch is possible. Snow Wednesday night with a low of 24. South wind 5-7 mph becoming light and variable in the evening. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible. Thursay there’s a 50%chance of snow. Mostly cloudy, with a high near 32. North wind 6-13 mph. New snow accumulation of less than a half inch possible.

Click here for graphical depictions of the snowfall forecast.

Click here for winter road conditions from the Utah Department of Transportation.