"Steven P. McNicoll" wrote in news:fD0ab.6502
:

What's the difference?

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.

--
John Godwin
Silicon Rallye Inc.