Flash flood watch takes effect 11 a.m. Monday

“We will get general rainfall Monday, and possibly very heavy Monday night”, he said. The area is under a flash flood warning, so commuters should be aware of sitting water on roadways and hazardous driving conditions. Malia is expected to continue it’s northbound track without presenting a threat to the main Hawaiian Islands.

Newly formed Tropical Depression Sixteen-E is behind all the moisture.

Forecasters predicted rainfall in excess of an inch in the deserts and the inland valleys and more than two inches in the mountains.

[READ: Free sandbags available for Mesa residents].

A forecast of heavy rain today and Tuesday in the Desert Southwest and southern California could trigger another round of “life-threatening flash floods”, according to the National Weather Service. “Residents and motorists living or traveling in the flood prone areas should concern themselves with the flood potential”. Roads and washes may also experience flooding.

Just one day after issuing the watch through Tuesday evening, the weather service instead said the watch will expire at 9 p.m. Monday after the storm took a slight turn to the east near the Arizona-Mexico border.

Triple-digit high temperatures of this weekend in Metro Phoenix are expected to dip into the mid and upper 80s both Monday and Tuesday, before drier and warmer weather returns for the middle and end of the week.