"John Godwin" wrote in message
...

In our area, for example, if LVK reports overcast, there's a very good
chance that all the airports skirting the SF bay are too. On the
otherhand, LVK can report clear and the bay airports may STILL be socked
in.

There are several microclimates here and locals can gauge one area based
on
an other but understand that the prevailing weather may not necessarily be
similar.


That's all very interesting, but what's the difference between assuming the
weather at WAY is similar to the weather at MGW, and saying "WAY is close
enough to MGW for me to be able to make a reasonable estimate of whether I
can get into WAY based on weather in MGW..."?