Then I say hi, like a spider to a fly.
CLOSED: Almost as big as a 50 cent piece
From the shape of the web, I think it is one of the spiders classified as "Orb Weavers".
I haven't been able to come up with an exact match yet. It does look like some of the pictures I've found called "Garden Orb Weavers".
This was at Sunset Beach SP 14 miles south of Santa Cruz.
Egads! I'll be suffering from the willies for days from THAT pic!
That looks like the one in eje's link but, according to that link your spider is way out of its range. :-|
I've seen these guys all up and down the coast. They usually come out into the web at night so nothing can pick them off.