Tropical Storm Polo will impact the U.S. after slamming Mexico. See its path.

The effects of former Hurricane Polo , now a tropical storm, are expected to bring rain and flooding to the southwestern United States after the powerful storm travels across Mexico, the National Hurricane Center said Tuesday.
Polo was downgraded from a hurricane to a tropical storm Tuesday afternoon local time. As the storm's path continues inland, more than 30 million people from Arizona to Iowa could be at risk for flash floods. Heavy rain has already flooded some roads in southern New Mexico, trapping drivers in cars until the waters receded.
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