As the season’s first monsoon brings dust storms to Phoenix, Verde Valley residents can expect to see some much-needed rain. Some may have already experienced scattered thunderstorms over the weekend.
David Byers, a meteorologist with the National Weather Service based in Flagstaff, said to expect more storms throughout the coming week. This dramatic weather shift is coming right on time, too, according to Byers.
“Normal monsoon season tends to start after the Fourth of July,” he said.
While residents may have experienced rain early last month, this will be the first true monsoon of the season, Byers said.
“In June, there was a monsoonal flow,” he said. “It was helped with a hurricane off the Pacific Coast but that was just a tease and not really a true monsoon.”
This year, Byers said will be an “above normal” monsoon season.
What makes this a true monsoon is that now meteorologists are seeing a “classic flow of pressure,” Byers said.
According to the National Weather Service, most of the year low-level winds in the region blow from land toward the sea. By late spring, however, solar heating causes temperatures to skyrocket and surface air pressure to fall. This forms an area of low pressure known as thermal low. Eventually, the pressure difference increases until the cooler and more humid air over the ocean is drawn to the hot, dry air on land. This occurrence eventually develops into thunderstorms.
Yavapai County has been under fire restrictions amid the combination of high winds, high temperatures and lack of moisture.
Wary of igniting brush fires, cities like Prescott and Flagstaff canceled their fireworks shows on Independence Day. Cottonwood still hosted their fireworks show, but under added precautions.
Byers said meteorologists expect to some drought relief in the next several weeks.
“We can see some making up for moisture,” he said, “It will be a few weeks before we get the fuels to wet down and there probably will still be fire danger for a week or two more before the area gets saturated.”
Yavapai County Emergency Management is taking extra precautions against flash flooding.
The group advises all to “Stay out of washes, riverbeds, and take higher ground if you downstream from a storm.”
“Certain weather patterns can focus flooding risks anywhere over the U.S.,” according to a public post by the group’s Facebook page. “Make sure to be familiar with the area you live and work in, so you can act quickly and stay safe in the event of a flash flood.”
The group is also stocking various locations with sandbags for reducing flood water damage:
• Yavapai County Verde Valley Public Works yard - 4000 West Cherry Road .
• Verde Valley Fire St 31, 2700 Godard Road, Cottonwood.
• Cottonwood Public Works Yard - 1480 W. Mingus Ave.
• Verde Valley Fire St. 36 at 895 First South Street, Clarkdale.
• Verde Valley Fire St 32, 1120 S. Page Springs Road, Cornville.