Flash flood watch to encompass Valley, beyond starting Thursday

Jul 22, 2021, 9:38 AM | Updated: 11:37 am
(AP File Photo)...
(AP File Photo)
(AP File Photo)

PHOENIX – It’s probably time to break out the heavy-duty rain gear in Arizona. A good portion of the state is under a flash flood watch starting Thursday afternoon in advance of a monsoon storm.

“We are looking at quite the system for the monsoon,” National Weather Service Phoenix bureau meteorologist Mark O’Malley told KTAR News 92.3 FM early Thursday.

The flash flood watch is set to last from 5 p.m. to 11 p.m. Saturday. During that stretch, chance of rain jumps from 30% late Thursday afternoon to 60% late evening and then 70% Saturday, a day when heavy rain is expected.

Showers could drop anywhere from one-tenth of an inch to a quarter-inch during those days, forecasts showed.

“Typically, in the monsoon we don’t look at predictable systems, however this one is … potentially bringing some locally heavy rains to many parts of Arizona over the next couple of days,” O’Malley said.

Rain fell in the Valley on Wednesday, from very little in some parts — 0.04 inches in Glendale and Tempe — to 0.71 inches near Fountain Hills, according to the Flood Control District of Maricopa County.

The origins of the coming storm is different than usual, O’Malley said.

“Instead of systems coming off the Pacific [Ocean], we’re looking at this system coming from the plains and Texas.

“It’s going to move right over Arizona and tap into all the moisture that we already have in place,” he said.

Humidity was 55% in the Valley on Thursday morning.

“Last monsoon we only briefly got into the wet part,” O’Malley said. “This year we’ve had a really good support in the atmosphere to produce day after day after day of rain somewhere in the state.”

The Valley has collected 0.54 inches of rain since monsoon season officially began June 15.

Aside from bringing much-needed rain, the storm will bring down local temperatures.

After a high Thursday of 104 degrees, temperatures will take a dive to the mid-90s. Friday could top out at 95 degrees, followed by two days of 93 degrees.

KTAR News 92.3 FM’s Jim Cross contributed to this report.

Lifetime Windows & Doors

We want to hear from you.

Have a story idea or tip? Pass it along to the KTAR News team here.

Arizona News

(Coronado National Forest Photo)...
Kevin Stone

Forest officials warn visitors about shipping container wall at Arizona border

Officials are warning Coronado National Forest visitors about potential safety hazards related to shipping container border wall construction in southern Arizona.
16 hours ago
Shaqueila Hudson (Maricopa County Sheriff's Office Photo)...

Woman accused of fatally stabbing boyfriend during argument in Phoenix

A woman was arrested for allegedly stabbing her boyfriend to death during an argument Tuesday in Phoenix, authorities said.
16 hours ago
(Photos via Buckeye Police Department)...

Buckeye Police boost reward to $12,000 for tips in fatal hit-and-run of 16-year-old girl

Authorities have upped the reward for tips in the fatal hit-and-run of a 16-year-old girl more than two years ago in Buckeye.
16 hours ago
(AP Photo/Matt Rourke)...

Mesa police fatally shoot man who allegedly drove into patrol vehicle

Police shot and killed a man who allegedly drove into a patrol vehicle outside a Mesa convenience store early Wednesday.
16 hours ago
President Joe Biden speaks about manufacturing jobs and the economy at SK Siltron CSS, a computer c...

President Joe Biden schedules visit to Phoenix for next week

President Joe Biden will visit a Phoenix microchip plant next week to tout his economic plan, the White House announced Wednesday.
16 hours ago
(Twitter File Photo/@PhoenixPolice)...

Phoenix police fatally shoot robbery suspect after car chase

Police in Phoenix said they fatally shot an armed robbery suspect after a car chase late Tuesday night.
16 hours ago

Sponsored Articles

(Photo via MLB's Arizona Fall League / Twitter)...
Arizona Fall League

Top prospects to watch at this year’s Arizona Fall League

One of the most exciting elements of the MLB offseason is the Arizona Fall League, which began its 30th season Monday.
Children’s Cancer Network

Children’s Cancer Network celebrates cancer-fighting superheroes, raises funds during September’s Childhood Cancer Awareness Month

Jace Hyduchak was like most other kids in his kindergarten class: He loved to play basketball, dress up like his favorite superheroes and jump as high as his pint-sized body would take him on his backyard trampoline.

Key dates for Arizona sports fans to look forward to this fall

Fall brings new beginnings in different ways for Arizona’s professional sports teams like the Cardinals and Coyotes.
Flash flood watch to encompass Valley, beyond starting Thursday