The governor of Georgia declared a state of emergency in two counties on Sunday after heavy rains hit the northwest of the state, causing flash flooding that flooded homes and roads.

The big picture: The National Weather Service issued flood watches and warnings for parts of Georgia through Monday due to the storm.

Because of "severe flooding," Georgia Gov. Brian Kemp declared a state of emergency in Chattooga and Floyd counties.

A flash flood emergency was declared for Summerville, where the Trion Fire Department said it responded to several calls due to flooding, calling

conditions in a statement Sunday "extremely dangerous to drive in." Meanwhile, the city of Summerville issued a boil water advisory for all residents.  

The National Weather Service said that Summerville, Trion, Lyerly, Menlo, Berryton, James H. Floyd State Park, Cloudland, and Chattoogaville are likely to be hit by flash floods.

What they mean: The NWS said in a statement, "This is a very dangerous and life-threatening situation." "Don't try to go anywhere unless you have to leave because of flooding or an evacuation order."

Studies show climate change is increasing the likelihood and intensity of heavy rainfall that can lead to flooding.

On Sunday, a floatplane headed for Seattle with nine adults and one child on board crashed in Mutiny Bay, west of Whidbey Island, in Washington state.  

The latest: The U.S. Coast Guard tweeted that the search would continue throughout the night for nine people still unaccounted for after confirming

earlier that crews had recovered one body at the scene of the Puget Sound crash.

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