I've seen CCD in both CA operations and out-of-state operations in  CA.
 
I have also seen it in northern CA, but there its been  mainly in migratory 
operations.  Not much report from N.  California from non-migratory folks.  
(Note, when I say migratory, I mean  that bees are moved long distances, 
some are out-of-state operations coming to  CA, others are CA based, but go 
out of state for honey crops.
 
HOWEVER, I have mainly seen CCD in areas where bees are stockpiled for  
almonds.  
 
Purely anecdotal, with some knowledge of where the IIV and Nosema thrive -  
I strongly recommend that beekeepers STAY  out of the wet, damp locations,  
areas with frequent ground fog.  Not always possible, but majority of  
apiaries that had problems last year were in cool, wet areas.  I almost  always 
found early morning fog, or frequent drizzle.
 
Jerry
 

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