Heavy rains caused by the remnants of the old tropical storm Rosa soddened the southwest on Tuesday, where some 10 million people were still at risk of being flooded.

The Phoenix area experienced heavy rain on Tuesday morning, resulting in flooded roads and headaches during daily commutes.

The storm destroyed heavy rain in northwestern Mexico on Monday, killing at least one victim. Mexican media reported that a woman had been washed away by floodwater and drowned in the town of Caborca, Sonora, on the Sea of ​​Cortez.

By early Tuesday morning, the center of what was left of Rosa was about 300 miles southwest of Phoenix. With winds of about 30 mph, the system was no longer tracked by the National Hurricane Center.

Still, heavy rains will continue to overwhelm the southwest over the next two days, with half a foot possible in the mountains of Arizona. This amount of rain "could produce flash floods that are life-threatening," said the hurricane center. "Debris flows and dangerous landslides are also possible in mountainous terrain."

From Arizona to Utah, residents filled sandbags in anticipation of heavy rainfall and potential flooding.

In southern Arizona, Monday's heavy rains flooded the streets of Yuma and caused blackouts in parts of the city. At least six Tucson roads were closed due to flooding caused by overflowing washes.

More: Tropical Storm Rosa reminds Arizona of its history of breathtaking flash floods

More: Tropical Storm Rosa Threatens 12 Million People in Southwest Floods

Forecasts predict heavy rains in surveillance areas, including Las Vegas, Phoenix, and Salt Lake City, with possible flooding in canyons with slits and regular dry-cleaning.

Meteorologists at the Phoenix National Weather Service said central and northern Arizona were likely to be hit by the heaviest rains.

The metropolitan area of ​​Phoenix, where temperatures were above 100 degrees just days ago, had already cooled to the 80s Monday thanks to Rosa.

There is good news with the heavy rains: much of Rosa's rainfall will target an extreme to exceptional drought zone in the Four Corners area, according to AccuWeather. Precipitation should be sufficient to significantly reduce the severity of the drought in most of this region. The rain will likely help fill the lakes and reservoirs in the area.

Meanwhile, Hurricane Sergio continued to roar away from the land in the Pacific Ocean. Sergio had winds of 100 km / h and was centered about 300 km south-southwest of the southern tip of the Baja California peninsula in Mexico, the hurricane center said. The storm was moving west at 13 mph. It poses no threat to the land areas.

In the Atlantic, Tropical Storm Leslie also continues to run harmlessly about 1,100 miles east of the outer shores of North Carolina. It will not affect the land either.

Closer to home, the hurricane center was also monitoring weather disturbances in the southwestern Caribbean Sea. It has a 20% chance of becoming a depression or a storm in the next five days.

Contributor: The Associated Press, Republic of Arizona

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