Here is the latest rainfall map for the past 7 days ending early this morning. The bulk of the heavy precip fell across parts of the corn belt. (click for larger version if you want).
In the previous posts I discussed the change to wetter and cooler weather starting the first week of July. It still appears that this will be the case. Today (Wednesday) should be the hottest day of the period (although briefly we may see more heat Monday). Go back and review those last few posts if you haven't already.
The Wednesday afternoon satellite image showed several features of interest. The first is the upper level high (ridge) that was parked over the 4 corners. It is responsible, in part, to the heat in the plains (but especially to the Pacific Northwest). This ridge is being beaten down by increasing flow aloft and upper level systems that are rounding the top and headed southeast. The first feature over south central Canada (labeled #1 on the map below) will bring a decent front into the central plains Thursday and Friday. It will bring cooler weather and pretty sizable area of rainfall. The second feature (labeled #2 on the map below) will bring a brief one day warmup either Sunday or Monday but once it turns southeast the cooling trend may start in earnest. It will also bring another round of precipitation. In addition, there may be smaller areas of thunderstorms in between the systems, especially across eastern Colorado.
In the meantime, here is the Weather Prediction Center's outlook for rainfall through July 7.
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