"John Hall" wrote in message
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In article
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Lawrence13 writes:
Isn't a lot of the reason for lack of fog due to cleaner air. Even
Chuck Berry knew that when he sang ' No Particulate Place to Go'

In urban areas, certainly. But even in rural areas there seems to have
been a reduction, though not so great as in big conurbations.

We still get plenty of hill fog John with visibilities less than 10 metres.

Will
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