Hydrologic Outlook

Heavy Snow and Strong Winds Across the North-Central U.S.; Heavy Rain and Flash Flooding in American Samoa and Puerto Rico

Areas of moderate to heavy snow and gusty to high winds are expected across the Northern Plains, Upper Midwest and Great Lakes into Friday. Several inches of snow accumulation is expected. Heavy rain will bring an isolated flash flood threat to Puerto Rico and flash flooding along with mudslides to American Samoa today. Read More >

...ICE FORMING ON MISSOURI RIVER... Due to the recent cold weather, ice floes are forming on the Missouri River and passing through the Bismarck and Mandan area. As of yet there are no impacts to river stage, however as ice starts to accumulate south of Bismarck and Mandan, rapidly rising water levels are expected. During initial icing over of the Missouri River between Burleigh and Morton counties, water levels can rise between four and seven feet within 24 hours. Given the cold weather in the upcoming days, the Missouri River near Mandan and Bismarck is likely to ice over by late in the week.