The chart at right shows the temperature (red line) and relative humidity (green line) at our home for the past week. You can see a three-day period with low relative humidity, starting just before midnight on the 4th and ending around 5 pm on the 7th. That's one signature of a Santa Ana condition; the other is the wind speed and direction. This time, for whatever reason, the winds never really picked up to high speeds, and only intermittently shifted direction.
Yesterday (the 8th) afternoon the humidity increased dramatically while the temperature decreased, and this morning it felt downright chilly this morning (to the heat-acclimated amongst us; you residents of northern climates can stop laughing now). A welcome break, indeed.
Unfortunately our one-week forecast says it will be hot again by the end of the coming week, well into the 90s...
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