Tropical Storm Paine

accuweather.com

The western U.S. will have to brace for localized flooding downpours as two storm systems descend on the region this week.

Tropical Storm Paine off the Baja California coast and a strong system over the Rockies will help to bring unsettled weather to the West for a few days this week.

Tropical Storm Paine is currently spinning a few hundred miles south of Baja California. As it tracks northwestward over the next couple of days, it is expected to strengthen into a stronger tropical storm.

Paine is expected to slowly parallel Baja California early this week and eventually stall offshore.

“The cool water west of the northern Baja California Peninsula will prevent Paine from directly reaching the southwestern United States,” AccuWeather Senior Meteorologist Kristina Pydynowski said.

Despite this, moisture will still be drawn northeastward into the southwestern U.S.

This moisture will bring drenching showers and thunderstorms and the risk for isolated flash flooding from western Arizona to western Colorado late Monday through Tuesday.

Localized downpours could cause dry stream beds to become rushing rivers in a short amount of time. Motorists will need to watch out for flooded and washed out roadways.

Powerful fall-like system to bring unsettled weather, cool air to the interior West at midweek

While unsettled weather comes to an end on Wednesday across the Southwest, the focus will shift to a new area and a new storm.

“A chilly storm system will drop into the northwestern United States during the middle of the week and slowly push across the West before emerging onto the Plains Friday,” Pydynowski said.

This will bring an unsettled end to the week for a large section of the interior West as this storm produces widespread showers and thunderstorms.

Locally drenching showers and thunderstorms are expected to soak the Rockies from Montana to Utah and western Colorado late Wednesday through Friday.

“The steadiest rain could partially be fueled by moisture from Paine,” Pydynowski said.

Some of the storms can bring heavy rainfall in a short amount of time. The combination of the heavy rain and runoff can lead to a quick increase for water levels on local streams and rivers.

The storm will also bring an increase in winds across the West. Afternoons could become quite gusty and some areas across the Southwest may experience blowing dust for a time that could hinder visibility and cause slow travel.

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