National Weather Service United States Department of Commerce
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Last Map Update: Tue, Jun. 28, 2022 at 9:06:11 am MST

National Weather Service Elko, NVNational Weather Service Salt Lake City, UTNational Weather Service Grand Junction, CO
National Weather Service Las Vegas, NVZoom
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National Weather Service Albuquerque, NM
National Weather Service San Diego, CANational Weather Service NWS PhoenixNational Weather Service NWS Tucson Arizona

Scattered showers and thundertorms will favor areas mainly south of the Mogollon Rim today with isolated activity elsewhere. Monsoon moisture will increase across all of Arizona Wednesday and Thursday leading to more wideespread storm activity. The threat for flash flooding will increase Wednesday and Thursday as heavy rain becomes more likely. A return to more scattered showers and storms looke likely Friday into the weekend.
Very hot temperatures will develop on Tuesday, especially across the lower elevations of the Grand Canyon where temperatures could reach up to 110°F. If recreating outdoors, limit outdoor exposure and physical activity to early morning or late evening, stay hydrated, wear lightweight clothing and use sunscreen. Don’t assume the temperatures at the north and south rim are representative of the temperatures down in the lower elevations of the Grand Canyon.
If you plan to be outdoors, be sure to check the forecastbefore venturing out. Have a good way to receive warnings, like reliable cell phone service. Head indoors when you hear thunder or see lightning.

 

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