A Red Flag Warning has been posted for most of Northern Arizona, with a wind advisory for Flagstaff Wednesday. The National Weather Service issued the Red Flag Warning for areas north of the Mogollon Rim from 10 a.m. until 8 p.m. Winds are expected to be 25 to 35 miles per hour with gusts up to 45 miles per hour. With low humidities and dry conditions, the chance of a wildfire to spread, if started, is great. A wind advisory for Flagstaff and surrounding areas will be in effect from 11 a.m. until 7 p.m. If you are driving around Northern Arizona, use caution especially if you are in a high profile vehicle such as a commercial vehicle, or an RV.