Arizona residents, especially those in Coconino and Yavapai counties, should be prepared for dangerous flash flooding conditions Wednesday. The National Weather Service in Flagstaff has issued a Flood Watch that will remain in effect until 11:00 p.m. Wednesday, with heavy rainfall expected to increase runoff risks across various areas, including popular hiking spots, roadways, and low-lying regions.
Flooding Risks in Key Locations
The most at-risk areas include the Grand Canyon, Oak Creek Canyon, Sycamore Canyon, and U.S. Highway 89. Flash floods may develop rapidly, particularly in canyons and areas affected by recent wildfires, where soil is less able to absorb the rainfall. Officials are warning that washes and slot canyons—normally dry during this time of year—could see dangerously swift floodwaters, posing a significant risk to hikers and drivers alike.
Flash Flooding Likely in the Afternoon and Evening
Flash floods are expected to be most severe during the afternoon and early evening, when rain intensity will be at its highest. Residents and outdoor enthusiasts are urged to avoid low-water crossings, as these areas could become deadly in a short amount of time. Outdoor activities such as hiking are strongly discouraged through the evening, and those with plans in flood-prone areas should be ready to act if conditions worsen or warnings are updated.
Skies Clear on Thursday
By Thursday, skies are expected to clear, bringing a stretch of dry and warm weather across northern Arizona. However, residents should remain alert to potential flash flooding until the Flood Watch expires later today.
Extended 5-Day Forecast for Flagstaff, AZ (June 4–9)
- Wednesday, June 4: Showers and storms likely by midday, with a high of 66°F. Flood Watch until 11 PM.
- Thursday, June 5: Sunny with patchy fog early, then clear skies. High of 72°F, calm morning winds.
- Friday, June 6: Sunny and warm, high of 77°F, low near 46°F.
- Saturday, June 7: Clear skies, high near 81°F, light evening breeze.
- Sunday, June 8: Mostly sunny, high of 82°F, with gusty winds up to 20 mph.
- Monday, June 9: Sunny with highs in the low 80s, breezy conditions possible late.
What to Do During the Flood Watch
If you’re in Coconino or Yavapai counties, it’s essential to stay updated on weather warnings and avoid outdoor activities, especially around low-water crossings or canyons. Flash floods can happen quickly, and being prepared to react swiftly is crucial to ensuring your safety.
