Heavy rains spreading across Minnesota Monday afternoon raised the chances of overnight flash flooding.
The National Weather Service has expanded a flash flood watch, which now includes the Twin Cities area.
The watch runs from 6 p.m. through 6 a.m. in an area that cuts diagonally through the state from Sioux Falls through St. Cloud and Duluth to Grand Marais.
Forecasters say the watch area could get another 2 or 3 inches of rain overnight. So be very careful if you're traveling overnight, especially if you're near a stream or in an urban area with lousy drainage.
A creek in western Minnesota had already reached flood stage after the rains of Sunday night and Monday morning.
The Weather Service has a flood warning out for the area near 12 Mile Creek in Traverse County. It applies to rural areas but no towns.
Rain may continue Tuesday morning, but forecasters expect skies to clear up later in the day and Wednesday is looking mostly sunny.
If you can't see the pavement, turn back
The driving rule that safety officials emphasize most when floods are possible: if a road is covered with water, don't drive on it.
You can't be sure how deep the water is – plus the pavement under it could be broken or washed away. And the water is often moving faster than it seems.