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Model predictions showing significant SW monsoon shower activity over portions of Arizona, New Mexico and Texas during the rest of the week. Towards the weekend, we could even have potential for flash flooding in some of these areas.

Tropical Storm Javier refuels storms in Arizona, New Mexico

Wednesday, August 10, 2016, 11:50 - Remnants of Tropical Storm Javier will renew the threat of flash flooding across the Desert Southwest as additional heavy rains target the region over the next few days. Most of Arizona and New Mexico have Flood Watches in effect.

Javier is likely to become a remnant surface low (dissipate) by Thursday near Baja California, but its moisture is expected to spread north into the Southwest this week, forewarns the Climate Prediction Center (CPC). 

“Locally heavy rain (near an 1 inch) may trigger flash flooding across southeast Arizona and southern New Mexico through Friday, August 12,” notes the agency in a statement. “Northeast flow, behind a cold front, along with anomalous low-level moisture is expected to favor heavy rain (locally more than 1 inch per 24 hours) expanding east from southern New Mexico to the Big Bend of Texas.”

SAFETY: Six important flood safety tips

The National Weather Service issued a Flash Flood Watch for parts of Arizona and New Mexico, where locally heavier rainfall amounts will be possible.

In addition to heavy rain, these storms may produce strong wind gusts that may cause damage or contribute to blowing dust and dangerous lightning. Residents are advised to closely monitor the ALERTS page of our website for updates on watches and warnings as these storms develop. 

Monsoonal storms typically last until mid-September when drier and cooler conditions are re-established over the region. 

Damage and impacts

Tropical storm remnants ushered a major dust storm into Phoenix, Arizona, on Tuesday, August 9, with a Flash Flood watch issued for much of the area. 

Residents took to social media to share the phenomenon, officially known as a haboob. 

As with haboobs in the Arabian Peninsula, Iraq and Kuwait, haboob occurrences in North America are often created by the collapse of a thunderstorm, according to Wikipedia. In the U.S., they frequently occur in Arizona, New Mexico, eastern California, and in Texas.

Just south from there, residents across Tuscon were being advised to seek higher ground as monsoon rains inundated roadways across the city on Tuesday.

The rains caused the wash in the video seen below to quickly fill up and flood over the bridge and onto the street. 

"Tucson 22nd alvernon wash overflowing," wrote @solo_bill on the Instagram post.

Tucson 22nd alvernon wash overflowing

A video posted by solo_bill (@solo_bill) on

SEND US YOUR PHOTOS!: Highlight the ever-changing weather in your area by uploading your photos and videos into our gallery

#ridingintherain not good times saw this guy #floodingstreets #azmonsoon#

A photo posted by solo_bill (@solo_bill) on

Last week, the city of Phoenix, Arizona was under flood water on Tuesday (August 2) after heavy rainfall caused flash flooding throughout the city, NBC reported.

The National Weather Service recorded an inch of rain in some parts of the Maricopa County and said the storm was accompanied by wind gusts of up to 50 mph. Freeways and roads were covered with water and mud in some cases and cars that tried going though heavily flooded streets stalled.

Monsoon season

The monsoon season runs from June 15 to September 30, but the storms peak between mid-July and mid-August. A large scale shift in wind patterns brings mighty storms and about half the year’s rainfall -- so flash flooding is always a real danger.

Arizona receives a statewide average of only 12.5 inches of rain per year. August's average rainfall is 0.98 of an inch, according to the NWS.

SAFETY: Six important flood safety tips

Watch below: Top 5 dangers of flooding

Source: CPC | NWS | Reuters

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