11/13 – Rob’s “Friday The 13th” Morning Forecast
A reinforcing cold front will push through the area later today. Zero moisture return before the front yesterday means no rainfall. Timing of the boundary should also be late enough to not impact highs today. Thus, have gone a degree or 2 above normal which is where temps have been topping out lately. As dew-points remain low, we should expect another cool night and a less typical 30 degree diurnal range from highs to lows. This trend will persist into Saturday as strong high pressure builds in from the north.
Models are still in good agreement that a more potent upper level disturbance will swing across the Northern Plains and upper MS River Valley Saturday night then through the Great Lakes Sunday. This will send a cold front through the area Sunday. I’m not expecting much more than a trace to less than a tenth of an inch of rain anywhere in the area.
A noticeable drop in temps can be expected with this boundary as high pressure builds in from the north through mid-week which will keep cold air advection persistent. This cooler airmass in place will gradually begin to modify/moderate the second half of the week.