An Easy Rule of ThumbAccording 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.".
Also, what does it mean when it says 40 chance of rain?
When your local forecaster says 40%, they mean for an area, usually for the local forecast or viewing area and for a certain time. Basically what they are saying is that in a forecast that suggests a 40% chance of rain, 40% of the forecast area will receive rainfall during the specific forecast period.
One may also ask, what does 10% chance of rain mean? If there's a 10 percent chance of rain, it means the current conditions yield rainfall one out of every 10 times observed. If it's 20 percent, then you'd see rain two out of every 10 times, and so on.
Beside above, what does 40% chance of rain look like?
If a forecaster is only 50% certain that precipitation will happen over 80 percent of the area, PoP (chance of rain) is 40% (i.e., . 5 x . 8). For our area, I often say there is a 20% chance of rain and that means for any given point on the map.
What does 30 percent chance of rain mean?
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.
Related Question Answers
How accurate is rain forecast?
Indeed, the forecast services are around 80% accurate for the first three days and tail off to just under 70% by day nine, and for all days, the forecasts are better than persistence. If you simply forecast dry conditions every day for all the locations, you would still be correct almost 70% of the time.Will it rain today Yes No?
You can see the chance of precipitation where you are, hour by hour. Using the Is It Going To Rain Today site, simply type in your zip code and you will get a quick answer as to whether it is going to rain or not — based on where you are: Yes – means you have rain coming. No – means you don't have rain coming.What does 100% rain mean?
A 100% chance of rain could mean buckets of rain all day or just a light sprinkle in the afternoon. All you can tell is you are likely to see some sort of precipitation. Likewise, 20% chance of rain means you're unlikely to see any rain at all today, or 20% of the area is going to be drenched.What does 70 percent rain mean?
This afternoon we had a 70 percent chance of rain in Phoenix. By tonight and during the first half of tomorrow, that will move up to 100 percent chance of rain. Basically, it means that a certain percentage of the forecast area is expected to get rain.What is the spiritual meaning of rain?
Symbolic Meaning of Rain. As seeing rain of any sort is significance that the person in question lived every area of his or her life as they should have. You may miss this person but they also miss being physically present with you in the earthly realms, in your day to day life.What does rain mean in a dream?
In most cases dreams about rain are a symbol of sadness or depression. Also, these dreams can mean that it is time to get rid of all negative emotions in your life.How do you know if it will rain?
How to tell if it's going to rain in my area - Clouds appear darker than usual.
- Clouds high in the sky.
- Temperature and humidity.
- Wind.
- Color of the sky.
- The birds are hiding.
- Joint pain.
- Physical indicators.
What does the name Rain mean?
The name Rain means Abundant Blessings From Above and is of American origin. Rain is name that's been used by parents who are considering unisex or non-gendered baby names--baby names that can be used for any gender.How accurate is rain 5 day forecast?
The Short Answer: A seven-day forecast can accurately predict the weather about 80 percent of the time and a five-day forecast can accurately predict the weather approximately 90 percent of the time. However, a 10-day—or longer—forecast is only right about half the time.Is rain a precipitation?
In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls under gravity. The main forms of precipitation include drizzle, rain, sleet, snow, graupel and hail. This process is typically active when freezing rain occurs.What does a 40 chance of snow mean?
A 40 percent chance of snow means the forecaster believes you will experience snow 4 out of every 10 times you hear such a forecast (assuming the forecasts verify perfectly). For example, in a given situation, scattered thunderstorms are expected, but only 40 percent of the area will receive rain.What is weather precipitation percentage?
The "Probability of Precipitation" (PoP) simply describes the probability that the forecast grid/point in question will receive at least 0.01" of rain. So, in this example, there is a 40 percent probability for at least 0.01" of rain at the specific forecast point of interest!What does 80 percent rain mean?
An 80 percent chance of rain (or of any other kind of precipitation) means the weather forecaster believes there will be an eight in ten chance (or 80 chances out of 100) of measurable precipitation (0.01 inch or more) in the area under consideration during the time interval that is specified in the weather forecast (What does a 20% chance of rain mean?
The reality: "When a forecast says there is a 20 percent chance of rain tomorrow it actually means it will rain on 20 percent of the days with exactly the same atmospheric conditions," Joslyn explained. Put another way, on that day there's an 80 percent chance there will be no rain anywhere in the forecast area.What does the percentage of rain mean on iPhone?
The percentage you see refers to the chance of rain for that particular day. In other words, this represents the likelihood it will rain in that area. You can learn more about this in the resource below. About the Weather app and icons on your iPhone and iPod touch.How is the probability of rain calculated?
Divide the total square miles in your city by the square miles in the rain cloud formation. Multiple the number times 100. When the formation comes over the area, this number is the percentage of the area that will have rain or snow. Calculate the probability of precipitation.Does it rain at 15 percent?
Basically it means there are small scattered pockets of rain in the area, and there's a 15% chance that one will rain on you within that hour.Is 20 chance of rain high?
When a meteorologist says that there is a 20 percent chance of rain, that is not a ''cover your rear'' percentage. It usually means that the atmosphere is generally stable but there's just enough of a particular ingredient (i.e. moisture, heat, lift) to squeeze out a shower of a very limited area.How is precipitation measured?
Precipitation is measured by using a rain gauge. A rain gauge is a small tube of glass or plastic with the upper end open. A measuring scale is usually attached to the tube, so that the amount of precipitation can be measured in inches or centimeters. ![\"free](\"//sstatic1.histats.com/0.gif?5052552&101\")
Sarah Duran 
