Joe Fischer wrote:
On Thu, 21 Sep 2006 20:48:19 GMT, "daestrom"
wrote:


No, I don't think so. I was pointing out that dewpoint is a much better
measure of the amount of moisture in the air than RH.


Aren't they related?


After all, in the
winter time around here when it's 20F, the weather report often says
humidity is above 75%. Of course that's the RH at the prevailing
temperature (20F) and not very meaningful. You have to do a lot of
calculations or use a chart to figure out what that would be if heated up to
70F. But compare the dewpoint (about 15F) with a desired dewpoint of 45F
and it's easy to tell that the air is really 'dry'.


I think the weather man here shows dew points when
there is storm danger.



Actually, my local weather posts dew point 24x7

Right now (4:00am ) in Houston TX, using data from a TV station with
studios about 3 miles away,

Temp is 81F
DewPoint is 75F

Pretty high RH, eh??