The metro area is under a winter weather advisory through 6 p.m. Saturday.

Snow is expected this morning, followed by a chance of freezing drizzle in the afternoon, according to the National Weather Service. A dusting of snow is expected generally north of I-70 – and more farther north in Missouri – but the glazing of roads with a thin layer of ice should miss most of Eastern Jackson County, falling mostly south of U.S. 50.

A second, heavier wave comes tonight. There’s a 90 percent chance of snow and sleet, and that could leave a little more than an inch of snow on the ground by Saturday morning.

More snow – less than an inch – could come Saturday morning, but the Weather Service cautions that Eastern Jackson County could get anywhere from 1 to 4 inches of snow overall.

It’s expected to get colder, too, not getting above freezing for the next several days – and a heavier storm could be on the way. The Weather Service says a potentially significant storm could come early next week but says the track of the storm is highly uncertain.

This weekend also brings the three-year anniversary of the blizzard that closed Interstate 70 overnight across most of the state.

To be ready for these conditions, the American Red Cross recommends having your car winterized and in good condition. Check the battery, lights, heater, defroster, wipers and washer fluid, antifreeze and tires. Carry a cell phone when you drive, and keep it charged. Have an ice scraper, shovel and jumper cables, plus a disaster supplies kit with flashlights (with fresh batteries), extra blankets or clothing, non-perishable food, matches and candles and a first-aid kit. Also, have kitty litter or sand for traction as well as a tow rope or chain.

Other suggestions:

• Plan long trips carefully. Keep an eye on the TV or ear on the radio – a weather radio is a good investment – for weather and road conditions. Let someone know where you’re going, as well as your route and expected arrival time.

• Give snowplows plenty of room to operate.

• Take it easy. Accelerate and brake gently, making it less likely that tires will spin on snow or ice. Brake by pumping the pedal, and if your vehicle has an anti-lock braking system – often just called ABS – read the owners manual and make sure you know how to use those brakes.

• Should you get stranded, stay with your vehicle. Don’t walk for help, especially in a blizzard. Keep fresh air circulating via a downwind window, but run the motor for warmth only now and then. Move your arms and legs to help circulation and stay awake. If you get outside the car, work slowly in the snow, avoiding over-exertion and the risk of a heart attack.