Weather

Actions

WHAT TO EXPECT: Hurricane Hilary could bring flooding and severe storms to Arizona

Phoenix did not receive any measurable rainfall in the months of April, May, June and July
Phoenix rain
Posted at 9:09 AM, Aug 17, 2023
and last updated 2023-08-21 12:40:48-04

PHOENIX — All eyes on Hilary as the now Tropical Storm continues to bring the threat of heavy rain and flooding to much of southern California and parts of Arizona.

While the most significant rain and weather impacts from this storm will be across southern California, we could see areas of flooding and strong thunderstorms along with other impacts across Arizona.

Much of Arizona, including western and parts of northern Arizona are now under Flood Watches today and Monday. This also includes areas along and north of the Mogollon Rim like Prescott, Flagstaff, Sedona and Payson where back to back thunderstorms could develop.

Storms could produce an additional 1 to 3 inches of rain in parts of our state today, leading to areas of flooding or flash flooding.

Monsoon 2023: Where to get sandbags across the Valley, northern Arizona

The highest risk for flooding will be in areas around creeks, normally dry washes and slot canyons. Low-water crossings could also become flooded and streets could be washed out in some spots. Remember, "Turn Around, Don't Drown" and don't attempt to cross any flooded washes or roadways because it could be dangerous or even deadly to do so.

Storms that develop around Arizona today could be strong or even severe, too.

Storms will be capable of producing powerful wind gusts and dangerous lightning. There is also a risk of isolated tornadoes in areas along the Colorado River in western and southwest Arizona.

Stay weather-aware and be prepared to seek shelter if necessary when storms move in to your community.

In addition to the threat of powerful storm winds, winds in general will increase across Arizona as Hilary's wind field expands outward.

A High Wind Warning is in effect for all of our counties in western Arizona where wind gusts could reach 60 to 70 mph. Secure any loose objects, otherwise they could get blown around and lead to further damage.

Wind Advisories are in effect for much of the rest of Arizona, including the Phoenix Metro this afternoon and evening. Winds gusts could peak near 45 mph in the Valley on Sunday.

After finally seeing rain at Phoenix Sky Harbor late last week, we could see even more rainfall Sunday and at the start of the week.

Phoenix went 147 days since the last measurable rainfall at the airport, marking the second longest dry streak on record

2023 is now in the top spot for the latest first measurable monsoon rain on record. (Phoenix didn't get measurable rain until August 14th back in 1995. Prior to this year, that was the latest on record.)

This is also the first time in recorded history that Phoenix did not get any measurable rainfall in the months of April, May, June and July.