The much-anticipated winter storm is heading into South Dakota with light rain and rainy mix. Most of what we’ve seen so far has been light as the air gets closure to saturation. As this happens, we’ll also cool things down. It still seems like the change-over to snow in the east will happen after midnight, likely between 1:00-4:00 a.m.
We still have a Winter Storm Warning posted for the far northeast corner, in areas like Sisseton. This is partially terrain influenced and the storm track is just heading in that direction.
Much of West River is included in a High Wind Watch through tomorrow evening. We have sustained winds forecasted at 25-45 mph and gusts could peak at 65 mph. The snow itself won’t be as big of an issue, and some might not even get any in the west. Wind looks to be a bigger weather factor.
Sioux Falls is now included in a Winter Weather Advisory. Even with that, the best moisture is pushing to the east and we’ve tweaked the snowfall forecast to reflect that.
This wave of moisture could lay down some decent snowfall along the Minnesota border before sunrise BUT don’t expect the system to be done by tomorrow’s morning commute. Lighter ice accumulation is also possible, with most picking up less than 0.1”. Much drier air will arrive into south-central South Dakota tomorrow and that dry core will take away some better moisture totals.
Sioux Falls is in line for 1-3” of snowfall by the end on Tuesday morning. Though we still have a better shot of total moisture than many others, warm air will stay a factor. We are in meteorological spring and this is fairly typical.
Later in the workweek we will warm back up before another cool front drops us back down. We’re tracking a slight chance of rain & snow next Saturday into Sunday for points in the far west and far east.
Have a great week and stay warm!
-Ben
