On 2017-07-20 19:38:18 +0000, James Wilkinson Sword said:

On Thu, 20 Jul 2017 16:08:28 +0100, NY wrote:

"James Wilkinson Sword" wrote in message
news
What do you believe weather forecasters mean when they say "40% chance of
rain"?

1) It will rain for 40% of the day.
2) There's a 40% chance it will rain at some point.

I googled it and apparently it depends on the forecaster? 1) and 2) are
completely different meanings.

Given that it includes the word "chance" (ie probability) I'd interpret it
as the second meaning: if (hypothetically) you replayed the day many times
(Groundhog Day!) then approx 40% of the occurrences of the day would have
some rain.

Which is of no use to me whatsoever. Pouring with rain all day is
nothing like spitting for half an hour. Yet they don't distinguish
between the two. There should be a measurement where 0% means no rain
at all, and 100% means rain all day.

Actually there shouldn't as there is no possibility of redefining the
meaning of probability to suit the needs of one person.
If you get your forecasts online, then you can get, as I mentioned
previously, an hourly forecast with the probability for each hour. That
already tells you if it is likely to rain all day or just at certain
times. If you want more than that then there are only two
possibilities. One is that you do not understand weather forecasting.
The other is that you are in fact as the troll I just killfiled
suggests. Being of a kindly and generous disposition, I will assume the
first.

Re your disgusting sig. Love is a strong feeling of affection (no more,
no less). The other topic is completely unrelated thereto. HTH.

--
Asha
minnies.opcop.org.uk
nature.opcop.org.uk
pictures.opcop.org.uk