Look At Those Diurnal Curves!

My previous post highlighted the non-typical diurnal curve that occurred here in GFK on the 15th, with temperatures generally rising from midnight to midnight.

As alluded to in the previous post, the opposite trend occurred on the 16th, with temperatures generally falling from midnight to midnight. Here is a look at the temperatures for 1/16:

For comparison, here is a comparison of January 15-16, 2013 observed temperatures versus the typical observed January temperatures over a two-day span:

As you can see, the temperature trend was fairly normal through the daylight hours on the 15th (albeit above average temperatures). Then the observed diurnal curve increased as opposed to decreased, before eventually crashing following passage of the cold front. Cold air advection continued through the day on the 16th, allowing for a fairly continuous drop in temperatures before leveling off during evening. Although this is kind of basic information, it is neat to see a graphical comparison of how westerly winds induced from a warm front can cause nocturnal maximum temperatures here; and how cold air advection of great enough magnitude can overcome the "typical" daily rise in temperatures caused by daylight.