Flagstaff, Ariz. – Drivers and residents across Northern Arizona are being urged to brace for strong crosswinds through tonight as gusts reach up to 45 mph, raising the risk of travel disruptions, power outages, and property damage ahead of Patriot Day observances on September 11. The National Weather Service in Flagstaff has issued a Wind Advisory in effect until 7 p.m. Wednesday.
The advisory affects high-elevation corridors including the Mogollon Rim, Kaibab Plateau, Grand Canyon Country, and Coconino Plateau. Officials warn that unsecured outdoor items and high-profile vehicles should exercise extreme caution as strong gusts may cause sudden lane shifts and travel hazards.
The Immediate Wind Threat and Travel Hazards
Forecasters expect the strongest gusts along Interstate 40 near Winslow and Flagstaff, and along Interstate 17 south toward Camp Verde. High-profile vehicles such as RVs, buses, and tractor-trailers are particularly vulnerable.
- Advisory in effect: until 7 p.m. Wednesday.
- Peak gusts: up to 45 mph.
- Most affected corridors: I-40 (Winslow/Flagstaff), I-17 (toward Camp Verde).
- Potential impacts: sudden lane shifts, travel delays, power outages, tree damage.
“A Wind Advisory is in effect until 7 p.m. Wednesday. Unsecured objects could blow away and high-profile vehicles should use extreme caution,” — National Weather Service, Flagstaff.
Impact on Patriot Day Preparations
Flagstaff residents and organizers preparing for Patriot Day remembrances on Thursday are advised to secure flags, displays, and outdoor decorations in advance. Dry conditions combined with high winds keep fire danger elevated, so outdoor burning or open flames should be avoided.
- Event prep: secure banners, flags, and lightweight displays today.
- Fire safety: avoid outdoor burning while winds persist.
- Power preparedness: expect possible outages; have flashlights and backup charging options ready.
What Residents and Travelers Should Do Now
Authorities recommend delaying non-essential travel until winds ease. If travel is necessary, high-profile vehicle operators should reduce speed, increase following distance, and be prepared for sudden gusts.
- Delay travel: if possible, until later Thursday when conditions calm.
- Secure items: bring in patio furniture, secure flags and trash bins.
- Drive safely: watch for sudden lane shifts and keep both hands on the wheel in gusty conditions.
Relief and Short-Term Forecast
Relief is expected by Thursday as winds taper and sunny, mild fall weather returns through the weekend. The five-day forecast for Flagstaff is summarized below:
- Thursday: Sunny, high 74°F, breezy with gusts near 21 mph.
- Friday: Sunny, high 73°F, calmer winds.
- Saturday: Sunny, high 74°F, light southwest breeze.
- Sunday: Mostly sunny, high 77°F, mild winds.
- Monday: Mostly clear, high 77°F, breezy afternoon winds.
Warnings remain posted through late Wednesday, and the National Weather Service will monitor for additional advisories if conditions worsen.
Final Takeaways
Strong winds up to 45 mph pose an immediate hazard to travel and outdoor property across Northern Arizona through tonight. With Patriot Day events planned for September 11, early preparation—securing displays and postponing non-essential trips—will reduce the risk of weather-related disruptions and damage.
What do you plan to do to prepare for these winds and Patriot Day observances? Share your tips and experiences in the comments below—your advice can help neighbors stay safe.
