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A flood advisory is in effect for the Twin Ports and the Interstate 35 corridor until 9 a.m., as heavy rain that started overnight continues this morning. The advisory includes southern St. Louis, northwestern Douglas, Carlton, Pine and southeastern Aitkin counties. Cities included in the advisory include Duluth, Superior, Proctor, Hermantown, Cloquet, Moose Lake, Wrenshall, Esko, Barnum, Hinckley, Cromwell and Floodwood.
A flash flood watch remains in effect for much of the Northland, including the Twin Ports, through 6 a.m. Tuesday as showers and storms are expected to bring very heavy rain to parts of the region. "Moisture will continue to lift northward as the night wears on, resulting in the development of locally heavy rainfall across much of the area. Rainfall in the flash flood watch area is expected to be in the 2 to 4 inch range, with locally heavier amounts of up to 5 inches also possible," the National Weather Service reported Monday evening.
A frost advisory is in effect for much of the Northland, including the Twin Ports area, for the overnight hours as temperatures are forecast to fall into the mid-30s. The National Weather Service has issued the advisory from 1 a.m. to 9 a.m. Saturday for St. Louis, Douglas, Carlton, Lake, Cook, Pine, Bayfield, Ashland, Iron, Sawyer, Washburn and Burnett counties.
Sunshine and southerly winds drove temperatures to record highs in parts of the Northland on Saturday. Ashland recorded a high of 91 degrees, the National Weather Service reported — breaking the previous Sept. 23 record of 90 degrees, set in 1937. The average high temperature for Ashland for this time of year is about 65 degrees. Duluth just missed a record high on Saturday; the high at the airport was 83 degrees, 2 degrees short of the daily record of 85, set in 1891.
Severe thunderstorms have been moving across much of the Northland this morning, bringing large hail and wind gusts in excess of 60 mph, and knocking out power to more than 2,000 homes and businesses. The Duluth International Airport recorded a wind gust of 61 mph as the storms rolled through the Twin Ports just after 7 a.m., and continued up the North Shore. A weather spotter near Finlayson reported quarter-size hail at 6:15 a.m. Another spotter near Sarona in Washburn County reported 2-inch hail at about 7:30 a.m.
Strong thunderstorms rolled across the Northland early Wednesday, prompting several severe weather warnings and providing an unplanned early wake-up call for many residents. The storms brought pea-sized hail and wind gusts to 45 mph - along with a lot of thunder and lightning - as they moved through the Duluth and Superior areas at about 3:30 a.m. Nickel-size hail was reported by a weather spotter near Willow River, the National Weather Service said.
Thunderstorms are possible overnight tonight in the Northland, with some strong storms possible -- especially west of the Twin Ports. The National Weather Service reports that damaging winds, hail and heavy rain are possible with the storms as they move in from the west late tonight into Wednesday morning. The best chance for strong storms will be from the Brainerd Lakes region north to International Falls. The storms are expected to gradually weaken as they move east toward the Twin Ports, the Arrowhead and Northwestern Wisconsin.
The National Weather Service has issued a frost advisory for most of the Northland, including the Twin Ports, for the overnight hours, as temperatures may drop into the low 30s in some locations. The advisory is in effect for St. Louis, Carlton, Douglas, Lake, Cook, Itasca, Koochiching, northern Aitkin, Bayfield, Washburn, Sawyer, Ashland and Iron counties from midnight to 8 a.m. Saturday.
The National Weather Service has issued a frost advisory for parts of the Northland for the overnight hours, as temperatures may drop to near freezing in some locations. The advisory is in effect for Cook, Lake, Ashland and Iron counties from 1 a.m. to 8 a.m. Friday. Sensitive outdoor plants may be killed if not protected, as temperatures tumble into the mid-30s. The best chance for frost will be in the higher terrain away from Lake Superior.
The National Weather Service reports that thunderstorms moving across the Northland this afternoon may produce hail. "Any of the storms will be capable of producing small hail, along with gusty winds this afternoon. While most of the hail will be in the dime- to nickel-size range, some storms could produce even larger hail," the Weather Service reported. A storm dropped pea-sized hail in Rice Lake as of 1:20 p.m.