Rio de Janeiro Hit by Massive Storm Surge

Apr 10, 2010; 6:39 PM ET
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Play video Sou'Wester Adds to Problems in Rio. Raychel Harvey-Jones explains.

One week after Rio De Janeiro suffered from torrential rains and deadly mudslides, the Brazilian city was dealt extreme waves and a massive storm surge.

A storm surge is an unusual rise in sea level on the coast due to a low pressure weather system and accompanying high winds.

An extra-tropical cyclone, or a storm that forms outside the tropics, formed along the coast of Rio and caused the storm surge. The features of this storm are similar to the Nor'easter that occurs along the East Coast of the U.S.

"Extra-tropical cyclones are common in the South Atlantic," said Alexandre Aguair of METSUL Meteorological Center in Brazil. "But they usually form along the coast of Argentina and in the Plata region."

Sometimes, storm surges affect the southern coast of Brazil but if the cyclone is very deep, the surge may reach the Southeast region.

"As this system developed much more to the North than usual, the surge didn't have an impact in the South, but it was a direct hit for Sao Paulo and mainly Rio," Aguair said.

Height (ft) of waves along Brazil's coast. April 4, 2010.

AccuWeather.com meteorologists forecast the next few days for the city between the sea and the mountains to be better than last week, but with a few rain showers.

By AccuWeather.com's Victoria Atkinson

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A large, horrific tornado struck the city of Joplin, Mo., last year on this date. The twister cut a deadly path across the south side of the city, leaving over 159 dead and at least 1,150 injured. The Joplin tornado currently ranks as the 7th deadliest tornado in U.S. history.

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