are the stations that collect data proprietary? And do different people have different information? Or do they use different type of analysis to come up with a degree or two of difference/different ideas about precipitation.
Edited to add an example:
I use the Wewow app and it lets you choose from different weather services and shows forecasts for each of them. For 11 PM tonight here’s a sample is what’s forecasted (c = degrees celsius, pop= probability of precipitation).
World weather online 10c 75pop
AccuWeather 12c and 48pop
Aerisb13c and 0pop
Thanks!
Editing again to say I’m in Ontario, Canada
In: 3
To put it simply: chaos.
In the sense that weather is really complicated and effectively impossible to actually predict, just estimate. That’s why, for example, you always get a report of the CHANCE it will rain, not a “yes” or “no”.
Even two services working with the same data can come to different conclusions depending on the simulations they run. And the same simulation can give different results if you slightly change the initial data.
Of course it’s possible for a service to be just flat out wrong if they have bad data and crappy simulations, but its difficult to check even that.
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