Miami Beach A California advisory firm has developed an index surveying 761 cities' and 3,143 counties' exposure to  sea level rise,  water stress,  heat stress,  cyclones and  extreme rainfall based on analysis of changes between current and future conditions.  (Photo: Shutterstock)

(Bloomberg) – The picturesque Florida cities of Miami Beach and Sarasota carry high investment-grade credit ratings and are popular travel destinations. They're also two of the most exposed U.S. cities to climate change in the country, according to a new analysis by advisory firm Four Twenty Seven.

Most exposed places to climate change

The Berkeley, California-based firm has developed an index surveying 761 cities' and 3,143 counties' exposure to sea level rise, water stress, heat stress, cyclones and extreme rainfall based on analysis of changes between current and future conditions. It found that communities in Florida are the most susceptible to climate change risks, with Miami Beach being the most exposed city and Manatee County being the most-exposed county.

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