"Tudor Hughes" wrote in message
ups.com...
On Apr 16, 3:12 pm, "Stuart" wrote:
What causes haze, and how is it predicted?

Any solid particles in suspension. This in effect means
either dust or smoke. Water vapour cannot cause haze because it is
invisible.
Sometimes when the sun is seen through a thin high layer of
cloud this is referred to as hazy sunshine but this is incorrect. The
terms "watwery" or "milky" would be better. Met Office presenters
don't know what haze is, or at least are told not to know, just like
footballers with brains find life easier if they pretend they haven't
got them.

Tudor Hughes.

Thanks for that, so to sum up. If the particles in the air are dry then it
is Haze, If it is water then it is mist.

So how do forecasters forecast it ? Take last weekend, the weather models
were such that I would have expected perfect weather for the west highlands,
forecasters such as Geoff Monk warned of Haze, he was correct, lots of blue
sky but always hazey. How did he know, what prompted him to add the haze to
his forecast??