Over the last 2 days (11/13-14) we had quite a bit of wind in Tucson. These are probably the same winds that plagued California and spread wildfires over the weekend. The winds drove the humidity way down and the temperature followed. Note the large pressure spike (it went just off the scale on Monday). This gradient must have drug the winds along with it, I suppose.
I’m curious about the luminosity spike (both visual and IR) yesterday, because it wasn’t noticeably brighter than the previous few days. Will be watching to see if this is a trend. One hypothesis is that the wind knocked down some leaves from the mulberry tree that protects my porch (and therefore, the weather data collection rig).