Before I go on, I'd like to make clear that I'm no meteorology expert, so if someone who has an expertise in the field can fill me in, that would be greatly appreciated.
I was watching The Weather Channel yesterday to get an idea of what the forecast was going to be for this weekend. Then I saw something which I couldn't really understand why they show it. They said the weather is going to be sunny during the day (but with a 20% chance of precipation), and clear at night (with a 10% chance of precipitation). Why is there a chance of precipitation when they know the weather is going to be sunny and/or clear? Doesn't it make more sense of having a chance of precipitation when it's partly/mostly cloudy, since clouds are the objects which carry moisture which drops down to Earth's surface?
From what past experience I have of watching weather reports, they are never 100% accurate, so them saying "it's going to be sunny" as well as "there is a 20% chance of precipitation", is that just so they can be right either way? I mean, come on. We all know that having completely clear skies can't cause any sort of precipitation (and it doesn't take a meteorologist to come up with that conclusion).
Like I said, if you are a meteorology expert, and can help me understand why they do this, please do!
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