Today is expected to be one of the more active days this monsoon season, with widespread chances for showers and thunderstorms across a large portion of the forecast area. While the threat for severe thunderstorm winds is diminished compared to the last few days, an increased potential for flash flooding is anticipated. Storms will form over the typical AZ high country, as well as over prominent terrain features of Southeast CA and Southwest AZ during the afternoon and early evening, with chances then focusing over the South-Central AZ lower deserts by the evening and overnight period.
A Flash Flood Watch has been issued for Northeastern Maricopa, Northern Pinal, and Southern Gila Counties and will be in effect from 4 PM MST this afternoon through 6 AM MST Thursday morning. Better coverage of thunderstorms is expected in this area, and storms that form today will be capable of efficient, heavy rainfall resulting in instances of flash flooding. Even if you are outside the Watch area, you should monitor radar and have multiple ways to receive alerts such as Flash Flood Warnings!
Temperatures gradually cool throughout the week before warming back up heading into next week. Deeper moisture will lead to elevated chances for shower and thunderstorm activity through the middle of the week before chances decrease noticeably by the end of the week through the weekend as drier air filters into the region.
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