Big Ridge

Here's a plot of 500 mb heights at Fairbanks and the morning inversion strength since the big ridge aloft built in. The inversion strength is simply the warmest temperature in the boundary layer minus the surface temperature. This is a simple but useful way to quantify the inversion strength. This morning's 11.8C is the strongest of the event so far. On the ground, lows range from the lower 20s (Salcha River RAWS) to the lower 50s (most automated sites above 2000' MSL)