Bone Dry

If you find you feel a bit parched today, it's because it is bone dry out.  Dewpoints on top of Mount Baldy last night dropped to below zero and bottomed out at about -14ºF.


The morning sounding from KSLC shows a large dewpoint depression (i.e., the difference between the temperature and the dew point) throughout the troposphere.  The precipitable water, a measure of how much water you would have if you condensed out all the water vapor in the atmospheric column, is only 0.17 inches.

Source: NOAA/NWS/SPC
That's dry, but Reno is even drier.  How about a precipitable water of 0.03".


That's parched.

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