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Flash flood watch until Saturday morning

MARSHALL — Much of southwest Minnesota is again in a flash flood watch until Saturday morning according to the National Weather Service based in Sioux Falls, South Dakota.

The area covers much of the region in a triangle from Lake Andes, South Dakota to Marshall and south to Sioux city, Iowa, with the heaviest of rainfall predicted in the Pipestone area of just over 2 inches, as can be seen on the NWS map.

“The Marshall area is expected to see 1-1/3 to 1-1/2 inches of rain today,” Meteorologist Brad Adams said Thursday. “Marshall is in the northern fringe of the affected area.”

While showers and thunderstorms were predicted before 7 a.m., some of the storms could produce heavy rain, all of which could contribute to a flash flood, he said.

Today should be mostly cloudy, with a high near 80. South wind around 5 mph becoming east in the afternoon and a 60 percent chance of precipitation. New rainfall amounts between a 10th and quarter of an inch, except higher amounts possible in thunderstorms, the NWS predicts.

Tonight, a chance of showers and thunderstorms, mainly after 1 a.m. Saturday. Some of the storms could produce heavy rain. It is expected to be mostly cloudy tonight, with a low around 67. The east wind may be around 5 mph becoming north after midnight. There’s a 30 percent chance of precipitation tonight, the weather service said.

Saturday, there’s a slight chance of showers and thunderstorms, Adams said. Partly sunny, with a high near 84. East northeast wind around 5 mph with a 20 percent chance of precipitation.

Saturday night is expected to be partly cloudy, with a low around 69, NWS said.

For Sunday, a chance of showers and thunderstorms is predicted for after 1 p.m. It should be partly sunny, with a high near 84 with a 30 percent chance of precipitation, NWS said.

Sunday night should be mostly cloudy, with a low around 62. Monday is expected to be back to mostly sunny, with a high near 81, the weather service said.

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