Summer's last hurrah? Raingauges (and basements) overflowed across parts of the metro this week. The north suburb trailheads were the hardest hit with 6"-8" of rain. The newly constructed Lake Rebecca trail received 4.15" of rain prior to hosting the Big Woods Classic this weekend. Most impressive was the two-day rain total of 10.16" in Waseca. Sopping wet singletrack seemed to be the theme this summer. Hopefully the rain faucet slows now that it's autumn.
Rain by the Numbers
Soil moisture remains well above normal across Minnesota. Windier conditions will develop over the weekend but expecting trails to remain tacky for quite some time.
The saturated singletrack gets another good downpour late Saturday. Thunderstorm motion, however, will be faster preventing widespread flooding but an additional inch is likely in many areas.
By early next week it will look and feel like fall. Lingering lighter showers on Monday and Tuesday are expected as the upper level low slowly drifts over northern Minnesota.
Soil Temperature Monitoring
The Minnesota Department of Agriculture is encouraging farmers to check soil temperature and delay autumn application of fertilizers until soil temperature stays below 50˚F". “Waiting until soil temperature stays below 50˚F before applying anhydrous ammonia and urea increases the availability of nitrogen to next season’s crop and decreases the amount of nitrate that could potentially leach into groundwater.” says Bruce Montgomery, manager of the MDA Fertilizer Management Section. Microbe activity in the soil slows down with temperatures below 50°F slowing the conversion of nitrogen fertilizer to nitrates therefore decreasing the probability of nitrates seeping in the water supply.
Soil temperatures typically stay below 50°F in southern Minnesota by the end of October. Across the state 48 stations measure soil moisture at a six inch depth with the data updated every 15 minutes.
Summer brings warm afternoons perfect for biking, but the summer heat and humidity can also spark thunderstorms and severe weather. Be prepared for any type of adverse weather headed your way with Aeris Pulse.
NWS Twin Cities Weather Story