That means there won't be a lot of push for that back door front, so it will remain in the area into Saturday. Some Relief from the Humidity Today and Tomorrowįor the rest of the week, Minnesota will remain stuck in the north-to-south flow (see Mid-tropospheric water vapor loop from Colorado State satellite slider) between the eastern Dakotas high (clockwise circulation) and the Maine low (counterclockwise circulation). The air quality index has eased mostly to the moderate (yellow) or green (good) ranking in most of Minnesota, but higher concentrations of smoke remain in Wisconsin, brushing southeastern Minnesota (see Minnesota Pollution Control Agency Air Quality Index). We will have to settle for being only on the edge of the much drier air during the mid-week period in central Minnesota, but the air will feel more comfortable. The new air mass to the east of the cold front (see latest NWS WPC North America zoom-in map) has come from northern Quebec, Ontario, and Hudson Bay, so dew points have dropped into the middle 50's in central Minnesota, the lower 50's and even some 40's in eastern Minnesota and Wisconsin, and some 30's in northeastern Minnesota (see greens, blues, and even whites on the UCAR hourly dew point chart). There have been a few sprinkles in northeastern Minnesota during the early morning hours (see latest time on the NWS Aviation Weather Center METAR map).ĭrier and Slightly Cooler Air Working into Eastern and Central MNĪlso seen this morning is the steady progression of drier air from east to west in eastern and central Minnesota. That's also where the afternoon and evening storms developed, moving north to south in the eastern Dakotas with some overnight storms in the western half of Minnesota (set frames to 96 on the College of DuPage north central US radar loop), brushing Willmar, Alexandria, and Fergus Falls in the early morning hours. The front finally edged far enough to our west during the afternoon (set time to 21Z on the NWS Aviation Weather Center METAR map) so that the highs in the upper 80's and lower 90's were off to our west in the eastern Dakotas and western Minnesota. Wednesday, J3 :10 AM Bob Weisman Meteorology Professor Saint Cloud State University Atmospheric and Hydrologic Sciences Department 80's Streak May End Today or TomorrowĬentral Minnesota finally got a few sprinkles yesterday morning from a line of showers that developed behind the back door front yesterday morning (set frames to 200 on the College of DuPage north central US radar loop).
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