Here is the general expectation of when greatest impacts from blowing snow will start. Note that there is some uncertainty in these times, which may be off by 1 or 2 hours, due to uncertainty how fast a strong cold front will sweep through the area. Once impacts start, they should last through much of the day Friday, potentially lingering into Friday night and Saturday in some locations like the Red River Valley. Regardless of these uncertainties - if you have travel plans on Friday, pay attention to the forecast as confidence may not increase until as late as Friday morning. Consider alternate travel plans. Prepare for difficult to very difficult travel conditions Friday.