# What does it mean when it says 30% chance of rain?

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Well, the technical term Meteorologists use for rain chances is Probability of Precipitation, or POP for short. … For example, a 30 percent chance of rain may mean 100 percent confidence that only 30 percent of the forecast area is going to get rain. Days like that, we say isolated showers.

## Is 30% of rain a lot?

The forecast of a 30 percent chance of rain can mean all of the area will get rain if it rains, but the forecaster has only a 30 percent confidence that rain will indeed arrive. It can also mean that scattered rain is a certainty, but it will affect only 30 percent of the area.

## What does 30% mean on the weather app?

30% chance that it might rain that day. Instead, it means there’s a 100% chance it will rain, but said precipitation will only cover 30% of a given area. Cue the pandemonium.

## What does the percentage of rain mean in a forecast?

What Does the Percentage of Rain Mean? According to a viral take on the internet, the percentage of rain doesn’t predict the chances of rain. Instead, it means a certain percentage of the forecasted area will definitely see rain—so if you see a 40% chance, it means 40% of the forecasted area will see rainfall.

## What does it mean when they say 70% chance of rain?

Basically, it means that a certain percentage of the forecast area is expected to get rain. … So, hold onto your umbrellas because after today we have a 70 percent chance of rain for Thursday and a 60 percent chance of rain for Friday.

## Is 40 percent of rain a lot?

According to the National Weather Service, if you see a 40 percent chance of rain, “there is a 40 percent chance that rain will occur at any given point in the area.”

## What does 60% rain mean?

So just what the heck does a “60 percent chance of rain” mean? It means that the weather forecaster has made two estimates, multiplied them together, and come up with a number called the PoP, or Possibility of Precipitation.

## What does the percentage on the weather app mean?

This is the definition most widely used by meteorologists. Another method for calculating the percentage is PoP = C x A—or Probability of Precipitation equals the confidence that it will rain in the forecast zone multiplied by the percentage of the forecast area that will receive rain.

## What does the percentage of the weather mean?

The rain percentage can spark a 100 percent chance of confusion. … It’s a mathematical equation that is used to forecast the coverage of rain. Chance of rain = Confidence X Area. Confidence meaning that forecaster is confident the precipitation will occur somewhere in the forecast area.

## What does rain mean spiritually?

Rain symbolism represents cleansing, calmness, growth and fertility, and even rebirth. It’s also a favorite symbol for moviemakers and literature writers who use rain as a symbol of foreshadowing.

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## How does the percentage of rain work?

The official definition of the probability of precipitation by the National Weather Service is the chance of precipitation (rain, snow, etc.) occurring at any one spot in the area covered by the forecast. … If we’re 50% confident that 100% of the Valley will get rain, then there’s a 50% chance of rainfall.

## What does the percentage of rain mean iPhone?

What does the percentage of rain mean on weather forecasts and the iPhone app? … ‘So 60 per cent means a 60 per cent chance of rain, 40 per cent chance of dry. There are different ways of expressing percentages and in the USA they do use the area one, but generally not here in the UK.

## How do they calculate rain percentage?

If the forecaster is only 50% sure that precipitation will occur, and expects that, if it does occur, it will produce measurable rain over about 80 percent of the area, the PoP (chance of rain) is 40%. ( PoP = . 5 x . … So a 50% chance of rain means that half of your day will get rain.