The National Weather Service has issued a wind advisory until 5 p.m. today for much of northern Arizona. This includes the cities of Flagstaff, Prescott, Payson and Sedona. Expect sustained winds of 20 – 35 miles per hour and gusts of 40 – 45 miles per hour. Winds should gradually decrease throughout the day. Drivers on I-40 and I-17 may experience difficulty due to the wind.