The upper-air sounding taken late yesterday (release time around 4:00 pm MST) looks very strange in the skew-T plot above (from SPC). Very low temperatures and dewpoint at surface (62 and -3 F) are too cold and obviously in error. Readings at the airport at 4:00 pm were 92 and 18 F. Something went awry somehow, and whatever quality control procedures there are missed the very bad data.
Shown below are the actual sounding data and the skew-T plot from Univ. of Wyoming. After all the very hot weather this month, 62 F at 4:00 pm yesterday would have been very welcome.
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