What Weather Forecast Terms Such As “cloudy” Really Mean
If you have ever wondered what is the difference between “partly cloudy” and “mostly sunny,” this video has all the answers.
In this video, Simon Whistler of YouTube Today I Found Out reiterates all the conditions that could be here if you watch the weather forecast on your local news channel. This is largely due to the opaque cloud cover (OCC) set by the National Meteorological Service , or how much of the sky is covered with clouds that you cannot see completely. “Solnechny” means that the OCC is less than 25%, or “pure” if it is less than 5%. Mostly sunny and partly cloudy mean that the OCC is between 26% and 50% and are used interchangeably. “Partly sunny” and “mostly cloudy” usually mean that the TCR is between 51% and 69%, but “mostly cloudy” can also be used for TCR up to 87%. At an OCC of 88% or higher, the sky is considered “cloudy” or “overcast”.
You will also learn about the probability of rainfall (POP) or the probability of rain. For example, terms such as “probability of rain” or “likely” are used to express uncertainty. If you hear those they think it might rain, it might be. It is the same with terms such as “isolated” or “diffuse”, but it is assumed that rain, if it does fall, will not affect the entire area. Whistler also covers terms related to temperature, wind chill, and how humidity affects the Heat Index in a video, so be sure to watch it through.
What is the difference between partly cloudy and variable sun? | Youtube