Dust storms, thunderstorms and flash flood advisories issued for Maricopa, Coconino counties

The National Weather Service in Flagstaff issued a flash flood warning for the Pipeline Fire Burn Scar in Coconino County north of Flagstaff until 4:15 p.m. Wednesday.

Flooding is already occurring in the area, according to the weather service.

The warning included Timberline, Wupatki Trails and Pine Mountain Estates.

As a result of the rainfall and flooding in the area, U.S. 89 was closed in both directions near milepost 425 about 1:15 p.m., according to a tweet from the Arizona Department of Transportation. The department announced as of 2:50 p.m. that southbound lanes were reopened.

The weather service also issued a flash flood warning for areas of Coconino and Yavapai counties south of Flagstaff until 4:15 p.m. Wednesday.

The weather service in Flagstaff said radar indicated heavy rain was falling along Wet Beaver Creek. According to the weather service, flooding is either already happening or soon to begin.

A warning was also issued for Yavapai County south of Prescott until 5 p.m.

The weather service in Flagstaff said radar showed heavy rainfall along Ask Creek, with flooding either ongoing or imminent.

The Flagstaff office also issued a warning for central Mohave County east of Kingman until 5:30 p.m. The weather service said radar showed heavy rainfall in the area of Diamond M Ranch, Hackberry Road, and Knight Creek Road.

While there are only four warnings as of 2:45 p.m. Wednesday, central and southern Arizona, as well as northern Arizona — save areas around Kingman and a stretch near the Utah border — are entirely covered by flash flood watches. Warnings are also popping up and changing quickly as the afternoon stretches on.

Dust, thunderstorm advisories in Maricopa County

The weather service in Phoenix also issued advisories for parts of Maricopa County, although the impact was estimated to be less severe than Flagstaff.

A severe thunderstorm advisory was in effect until 4:15 p.m. Wednesday, impacting mostly the west Valley cities of Avondale, Goodyear and Buckeye.

NWS Phoenix meteorologist Bianca Feldkircher said these areas could expect "maybe a quarter to a half of an inch," small amounts of hail and wind gusts of up to 60 miles per hour.

A dust advisory warning was issued for the area of Maricopa County in south-central Arizona until 3:45 p.m. Impacted highways were Interstate 10, U.S. 60 and Loop 101 with reduced visibilities of one mile, according to the weather service in Phoenix.

The warning included the areas of Glendale, Surprise, Avondale, Goodyear, Buckeye, El Mirage, Tolleson, Youngtown, Sun City, Waddell, Cashion, Litchfield Park and Perryville.

This is a developing story, Check back for updates.

Reach breaking news reporter Sam Burdette at sburdette@gannett.com or on Twitter @SuperSafetySam.

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This article originally appeared on Arizona Republic: Flash flood warning issued for Coconino County, north of Flagstaff