FLAGSTAFF, Ariz. – Drivers across northern Arizona face hazardous travel Tuesday as strong thunderstorms develop through the afternoon, bringing heavy rain and possible flash flooding. The National Weather Service warns of dangerous conditions on I-40 and I-17, especially during peak travel hours. Motorists should expect sudden downpours, reduced visibility, and slick roads.
According to the National Weather Service in Flagstaff, thunderstorms will build by late morning Tuesday, with the highest risk between 11 a.m. and 6 p.m. Gusty winds up to 30 mph could accompany storms, creating difficult driving conditions and scattered power outages. Rainfall rates may quickly overwhelm storm drains, heightening the flash flood risk in low-lying and burn scar areas.
Flagstaff residents should prepare for heavy rain during the evening commute and limit nonessential travel if storms intensify. Travelers heading toward Phoenix or eastern Arizona on I-17 and I-40 are urged to plan extra time. Lightning poses an additional threat, particularly for hikers and campers across the Coconino National Forest.
While rain chances taper slightly Wednesday, showers and isolated storms remain likely through Thursday night. Skies gradually clear Friday, bringing drier weather as Labor Day weekend approaches. Temperatures will stay near seasonal averages, with highs in the mid-70s and lows in the 50s.
Holiday travelers can expect a shift toward sunnier skies by Saturday, but isolated storms remain possible in the mountains. Anyone traveling should stay alert to rapidly changing weather, especially with an influx of visitors expected for Labor Day events.
Five Day Forecast for Flagstaff, Arizona
- Tuesday: Showers and thunderstorms likely. High near 73. Low around 48.
- Wednesday: Chance of showers and thunderstorms. High near 74. Low around 47.
- Thursday: Showers possible through evening. High near 72. Low around 48.
- Friday: Mostly sunny, slight storm chance. High near 76. Low near 47.
- Saturday: Partly sunny, isolated storms possible. High near 80. Low near 48.
