"Keith (Southend)" wrote in message
...
A decade or so ago I would have looked at the forthcoming charts showing
high pressure on the near continent with a slack southerly flow and
almost guaranteed widespread fogs. However, so far the forecasts have
hardly mentioned fog(s). Is this to do with the "cleaner" air we now
live with, compared to the soot producing smogs of yester-year. Wew
hardly get an hour or two of fog in a year now, here at Southend-on-Sea,
yet I can remember days with it, and some days it never cleared at all
through the day.

What has changed?

Keith, you're correct, lowland radiation fog has got much rarer and thinner.
All to do with cleaner air and less condensation nucleii like soot etc.
Hill fog OTOH has probably got more common due to generally warmer and more
moist winters.

Will.
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