On Tue, 25 Jul 2017 11:55:29 +0100, whisky-dave wrote:

On Thursday, 20 July 2017 20:38:25 UTC+1, James Wilkinson Sword wrote:
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.

How about showers or inteminant showers or heavy downfalls, storms.

Yes, those are more helpful. But "20% chance of rain" means nothing,

There should be a measurement where 0% means no rain at all, and 100% means rain all day.

So what would 50% mean light showers for 50% of the day or heavy rain 50% of the day, and whayt would the other 50% be of the day be like ?

If there's only a % number it should be expressed as a percentage of pouring all day.

--
All I ask is a chance to prove that money can't make me happy.