Flash flooding that left at least three dead and one missing in Colorado worsened as torrential rain continued to pound the state.
Thousands have been forced to flee to higher ground as rising water toppled buildings, stranded motorists, cut off remote towns and forced the state's largest university to close.
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The young royal says he was reluctant to take on the responsibilities of his title, but loyalty to the Queen helped him "work out a role".
A rather cloudy morning will clear to sunny intervals and showers this afternoon.
Meng Meng and Jiao Qing arrive in their new home after being loaned to Berlin Zoo for 15 years as "diplomatic envoys" from China.