Water vapor satellite imagery from 8:30 PM CDT this evening. Source, http://weather.cod.edu/forecast/
Low pressure (Red L on the map) and the upper level trough will both move off to the east by Sunday morning.
Tonight's low temperature forecast.
Sunday's high temperature forecast.
Rainfall reports for August 19-20, 2016
Note: Rainfall totals listed below are through around 7 PM August 20.
Phillips, WI: 1.05"
Grand Marais, MN: 0.85"
Clam Lake, WI: 0.83"
Ashland, WI: 0.77"
Washburn, WI: 0.65"
Kabetogama, MN: 0.59"
Hayward, WI: 0.56"
Cass Lake, MN: 0.55"
Aitkin, MN: 0.53"
Grand Portage, MN: 0.45"
Effie, MN: 0.42"
Isabella, MN: 0.39"
Barnes, WI: 0.36"
Moose Lake, MN: 0.35"
McGregor, MN: 0.33"
Longville, MN: 0.31"
Walker, MN: 0.25"
Cook, MN: 0.17"
Ely, MN: 0.16"
Orr, MN: 0.15"
Minong, WI: 0.12"
Littlefork, MN: 0.09"
Hinckley, MN: 0.08"
Siren, WI: 0.08"
Saginaw, MN: 0.07"
Cloquet, MN: 0.07"
Chisholm-Hibbing, MN (Airport) 0.06"
International Falls, MN: 0.04"
Duluth, MN (Airport) 0.01"
Superior, WI (Airport) 0.01"
Weather Summary for NE Minnesota and NW Wisconsin
Date: August 20, 2016
A strong area of low pressure averaging 996mb was over eastern Upper Michigan as of 8 PM this evening while a potent upper level trough with widespread 30-60 meter 500mb 12-hour height falls passes through the Upper Midwest and Great Lakes. Well most of the Northland did pick up at least some light rain today with heavier rain at times in parts of northwest Wisconsin especially along an Ashland-Hayward line and points east, but there were also some heavier showers that developed today in parts of northeast and east central Minnesota. Note: The Duluth and Superior area saw little if any rain today, not real sure why that happened but I think most people weren't upset that the Twin Ports saw little if any rain today.
Highs today were generally in the 60s with a few locations around 70 degrees. Winds were out of the north at 10 to 20 mph and sky conditions were generally mostly cloudy through the day.
Forecast Discussion for NE Minnesota and NW Wisconsin
...Short Term Forecast...
Tonight (August 20)
Strong area of low pressure will to the Ontario-Quebec Province line by daybreak with high pressure over the northern Plains and an upper level trough slowly exiting to the east through the night. Mostly cloudy to partly cloudy skies will be found over the area tonight with rain and showers persisting over the Arrowhead of Minnesota down through parts of northwest Wisconsin while any lingering showers elsewhere in the Northland dissipate by late evening. Low temperatures will be in the 40s and 50s with a north wind at 10 to 20 mph with gusts up to around 30 mph especially around Lake Superior.
Sunday (August 21)
High pressure moves into the Upper Midwest to end the weekend. Partly to mostly cloudy skies will be found over the area with highs on Sunday in the 60s to lower 70s with lows Sunday night in the 40s and 50s. Winds out of the north or northwest at 10 to 20 mph tomorrow will shift to the southwest tomorrow night.
Monday and Tuesday (August 22-23)
Warming up as south winds increase ahead of an area of low pressure, warm front and cold front which will move slowly east out of the northern Plains. Could be a few showers in extreme northern Minnesota on Monday otherwise it looks mainly dry across the Northland for Monday and Tuesday.
High temperatures Monday and Tuesday should warm into the 80s in northeast Minnesota and northwest Wisconsin with lows in the 50s and 60s. It will also be turning a little more humid once again with dew points climbing into the 50s to lower 60s on Monday and into the 60s to around 70 degrees on Tuesday.
Forecast for Duluth and Superior
.Tonight... Breezy. Partly to mostly cloudy. Low 48 to 53, a little warmer closer to Lake Superior. Wind north to northwest at 15 to 25 mph.
.Sunday... Partly to mostly sunny. High 66 to 71. Wind northwest at 10 to 20 mph.
Normal temperatures for Sunday
Sunrise Sunday: 6:15 AM CDT
Sunset Sunday: 8:08 PM CDT