One of the most notable characteristics of this weeks weather besides the warmer temperatures has been the amount of moisture that has advected up here. At Wednesday's reporting time of 6:00 a.m., the dew point temperature was at 45°, this was up from Tuesday's reading of 9°! This morning's (Friday) reading was 54°, so you can really feel the humidity start to permeate the air...which is going to cause our weather this weekend, hence the topic of this post.
Below is a picture from NWS STL that shows the position of the cold front as it passes through the area late Saturday night. There should be a couple waves of moisture pass through the area, one preceeding the fropa during the late evening hours, and the other after the front has passed through around midday Sunday. The threat for severe weather mainly persists for Saturday night, although it is mainly focused on North and Northwest Missouri at this time.
It looks like this system is poised to dump a good amount of moisture on the northern part of Missouri up into the great lakes area. Here is the 1-3 day QPF:
And the 5 day shows another system impacting the southern part of Missouri. At the time, it seems that we are sandwiched between systems and won't get the brunt of the heavy rain.