Hello group

Does anyone have a link to any websites that would give me weather forecast
for the next 21 days for various locations in the UK please? I know NOTHING
about weather forecasting, so I'm just loooking for a site that will give me
expected sunshine, temperature, and rainfall.

TIA

L

"work hard" wrote in message
...
Hello group

Does anyone have a link to any websites that would give me weather
forecast
for the next 21 days for various locations in the UK please? I know
NOTHING
about weather forecasting, so I'm just loooking for a site that will give
me
expected sunshine, temperature, and rainfall.

If anyone on this group or elsewhere could make forecasts that far ahead,
then he would be a multi-millionaire by now.

Six to seven days is generally accepted as being the maximum limit with
little better than very broad ideas for the following few days.

Jack

"Jack Harrison" wrote in message
...

"work hard" wrote in message
...
Hello group

Does anyone have a link to any websites that would give me weather
forecast
for the next 21 days for various locations in the UK please? I know
NOTHING
about weather forecasting, so I'm just looking for a site that will give
me
expected sunshine, temperature, and rainfall.

If anyone on this group or elsewhere could make forecasts that far ahead,
then he would be a multi-millionaire by now.

Six to seven days is generally accepted as being the maximum limit with
little better than very broad ideas for the following few days.

Jack

There is a general principle of persistence, where the weather tomorrow is
much like the weather today. So I'll predict that until the end of the month
it will be sunshine and showers with below average temperature, just as it
has been this week. On the other hand he could try my rival Roeder's
site if some one would post it :-)

Cheers, Alastair.

"Alastair McDonald" k

There is a general principle of persistence, where the weather tomorrow is
much like the weather today.

On that basis, so today is much like Tuesday then?

Totally different and I for one have no truck with the "persistence theory".

All that can be said is that there will be some weather in the next 21 days.

Jack

"Jack Harrison" wrote in message


If anyone on this group or elsewhere could make forecasts that far ahead,
then he would be a multi-millionaire by now.

Don't be silly.


--
Posted via Mailgate.ORG Server - http://www.Mailgate.ORG

"Michael Mcneil" wrote in message
news:49cafedbd80556167d47d54f67bb7640.45219@mygate .mailgate.org...
"Jack Harrison" wrote in message


If anyone on this group or elsewhere could make forecasts that far ahead,
then he would be a multi-millionaire by now.

Don't be silly.

A 3 week forecast as good as we can currently do 3 days?

Oh I think he would, assuming he went private and didn't work
selflessly for the greater good in the Met Office

Col
--
Bolton, Lancashire.
160m asl.
http://www.reddwarfer.btinternet.co.uk

"Jack Harrison" wrote in message
...
If anyone on this group or elsewhere could make forecasts that far ahead,
then he would be a multi-millionaire by now.


As I'm too busy rustling up some longe range forecasts, I've asked my deputy
butler to post this reply from my luxury yacht which is currently moored off
the coast of Barbados! :-)

Victor

"Chef!" wrote in message
...
Now I am confused. I sometimes refer to www.metcheck.com. Their 7-day
forecast predicts rainfall to the nearest mm, windspeed to +/- 1 mph,
pressure to the nearest mb, cloud cover to +/-1%.

Does that mean that they are reporting figures to a spurious degree of
accuracy or are their predictions really that accurate for the weather 7
days from now?


Over egging the cake slightly?

Victor

Jack Harrison wrote:
"work hard" wrote in message
...
Hello group

Does anyone have a link to any websites that would give me weather
forecast for the next 21 days for various locations in the UK
please? I know NOTHING about weather forecasting, so I'm just
loooking for a site that will give me expected sunshine,
temperature, and rainfall.

If anyone on this group or elsewhere could make forecasts that far
ahead, then he would be a multi-millionaire by now.

Six to seven days is generally accepted as being the maximum limit
with little better than very broad ideas for the following few days.

Jack

Now I am confused. I sometimes refer to www.metcheck.com. Their 7-day
forecast predicts rainfall to the nearest mm, windspeed to +/- 1 mph,
pressure to the nearest mb, cloud cover to +/-1%.

Does that mean that they are reporting figures to a spurious degree of
accuracy or are their predictions really that accurate for the weather 7
days from now?

Regards
Chef!

"Chef!"

Now I am confused. I sometimes refer to www.metcheck.com. Their 7-day
forecast predicts rainfall to the nearest mm, windspeed to +/- 1 mph,
pressure to the nearest mb, cloud cover to +/-1%.

That particular website has been discussed endlessly in the past.

It is very cleverly put together, neat and presentable (full marks for that)

But it has fooled a lot of people into thinking that because it purports to
be so accurate, then if must be extremely trustworthy. Don't be taken in.
It's a bit like the conversion of units that seems to give an amazing degree
of precision.

For example, a cloud base might be reported as being 3,000 feet - clearly
accurate to no better that +/- 100 feet.
(two significant figures). That is then converted to 914 metres and suddenly
we have an accuracy (?) of one part in 914.
It is a rule of thumb (commonsense actually) that you cannot get more
precision in an answer than the level of precision that was put into the
calculation

Look around your supermarket and you will see conversions from a round
number of eg pounds into an amazingly precise number of grams. I drive my
wife mad (also a science graduate) by forever pointing this out:
"Yes I know, you have said that all before many times. But does it really
matter?" It does to me!

So, don't be fooled into believing that metcheck is capable of such
precision. It's a brave effort, but interpret the output with caution.

Jack