Severe thunderstorms rumbled through our area not once, but twice today bringing heavy rainfall that lead to flash flooding and damaging winds up to 70 mph that knocked down trees. At one point, nearly 20,000 RPU customers were without power. Towns spanning Dodge, Olmsted, Wabasha, and Winona Counties all received heavy rainfall and were under a flash flood warning earlier in the day. We received 4.5″ of rain at KTTC as of late afternoon and one view reported 6″ of rain in Mantorville. The good news is that the heat wave is officially over but we’ll have to wait until Sunday before dry conditions return to our area.
Tonight, a few showers and thunderstorms will linger until midnight with clouds decreasing afterwards. Overnight lows will be near 60 degrees with a light north wind at 3-8 mph. Given the recent rain and little wind, may need to watch out for the potential of patchy fog to develop.
Dry skies arrive into the region Sunday with highs in the mid to upper 70s and comfortable dew points in the 50s; essentially a pleasant way to end the weekend. Canadian high pressure takes control of the upper Midwest on Monday, allowing the quiet and tranquil weather pattern to persist into the upcoming work week. Afternoon highs will be in the mid 70s with mainly sunny skies.
Temperatures remain seasonable throughout the week in the upper 70s to lower 80s as sunshine continues through the midweek. Conditions remain dry through Thursday until out next chance for showers and thunderstorms arrives Friday with a slight chance for precipitation in the afternoon. As of now, conditions look dry and sunny for the start of the weekend on Saturday with highs in the upper 70s.