Here is your Monsoon Forecast for today, Monday, July 18th provided by the US National Weather Service, Flagstaff, Arizona. Most activity today will be over the western Rim and Grand Canyon region. Heavy rain, lightning, hail, gusty winds, and flash flooding are all possible. Storm chances decrease as you head east, especially for the lower elevations. Watch for lightning, gusty winds, heavy rainfall, and localized flash flooding. As always with monsoon rains, stay clear of flooded roadways, washes, and riverbeds. Flash floods can happen in moments. What is the Arizona Monsoon? Learn about why we see the same weather patterns...

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