National Weather Service United States Department of Commerce

Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

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Last Map Update: Mon, Aug 31, 2026 at 7:46:33 am MST

A Flash Flood Watch for northern Arizona remains in effect through midnight tonight. Thunderstorms with heavy rain may produce flash flooding. Avoid flood prone areas like creeks, slot canyons, burn scars, and low water crossings. Have a way to receive Flash Flood Warnings and be prepared to take action should warnings be issued. NEVER drive into flood waters.
Scattered to numerous showers and thunderstorms are forecast across northern Arizona again today. The weather risk is in the moderate category due to the potential for flash flooding from heavy rainfall. A Flash Flood Watch remains in effect for northern Arizona through midnight tonight.

 

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