Weather Forecasting

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What is the Weather Forecast Meaning?

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Weather forecasting is the use of science and technology to forecast atmospheric conditions for a certain place and period. For centuries, people have tried to forecast the weather informally, and officially since the nineteenth century. Weather forecasting, which used to be done by hand and was focused mostly on variations in barometric pressure, existing weather patterns, and sky state or cloud cover, is now done using computer-based models that account for a variety of atmospheric variables. Weather predictions are created by gathering objective data about the actual condition of the atmosphere at a certain location and using meteorology to predict how the weather will behave in the future. Human feedback is also required to choose the best possible forecast model on which to base the forecast. Weather forecasting is a part of the economy; for example, the United States spent $5.1 billion on weather forecasting in 2009, with gains expected to be six times that amount. Since we know the weather forecast meaning, let us take a look at the importance of weather forecasting pdf and the different methods used to forecast.

Importance of Weather Forecasting

There are various uses of weather forecasting in day-to-day life, it can be as simple as deciding whether to take an umbrella with you on your work or to deciding your outfit. Following are some of the places where weather forecasting plays a major role:

  1. Seasons and nature play a major role in agriculture and farming. When it comes to the farming of various fruits, vegetables, and pulses, the temperature is extremely important. Farmers didn't have a better understanding of weather forecasts before, so they had to rely on estimates to do their jobs. They do, however, sometimes suffer losses as a result of inaccurate weather forecasts. Farmers will now get all of their forecasts on their smartphones, thanks to advances in technology and the use of unique weather forecasting mechanisms. Of course, education in this area is critical, but the majority of the farmer community at this point understands the fundamentals, making it simple for them to use the features.

  2. It aids food grain transportation and storage.

  3. It aids in the handling of cultural operations such as harrowing, hoeing, etc.

  4. It aids in the implementation of livestock protection initiatives.

Types of Weather Forecasting

  • Short Range Forecasting: This forecasting will last 1-2 days.

  • Medium Range Forecasting: This kind of forecasting lasts 3-4 days to 2 weeks.

  • Long Range Forecasts: This forecasting is for times longer than four weeks.

Methods Used to Find the Weather Forecasting

  1. Synoptic Method:  A systematic study of recent weather forecasts from a wide area is used in this method of weather forecasting. Present weather conditions are linked to comparable scenarios in the past, and predictions are based on the premise that the current scenario would behave similarly to the analogous situation in the past.

  2. Statistical Method: Regression equations or other advanced relationships are formed between various weather elements and the subsequent climate in this method of weather forecasting. Predictions or weather criteria are usually chosen based on a potential physical interaction with the predictants.

  3. Numerical Weather Prediction Techniques: Numerical weather prediction definition states that it forecasts weather using statistical models of the atmosphere and oceans dependent on current weather conditions. The action of the atmosphere is expressed in this system by a series of equations based on physical laws governing airflow, air pressure, and other data. The method has been shown to be optimal for medium-term forecasts.

Weather Forecasting Process

A weather forecast is made up of three steps: observation and analysis, extrapolation to determine the state of the atmosphere in the future, and estimation of specific variables. One method of qualitative extrapolation is to conclude the weather features will continue to travel in the same direction as they have been.

Observation and analysis

1) While data-access policies differ by country, all of these reports are sent to regional and global centres through the World Meteorological Organization's (WMO) Global Telecommunications System (GTS).

2) The data is then compiled, redistributed in the GTS, and used in various numerical forecasting models. Typically, these numerical models begin with data collected between the hours of 0000 and 1200 UTC (7 A.M. and 7 P.M. Eastern Standard Time, respectively).

3) To aid the forecaster, the data is printed, mapped, and graphed in several ways. Furthermore, some "initialization" routines slightly change the data when it enters a prediction model only for that model.


1) The degree of approximation to the equations varies greatly between models. Since more computing time is taken to do the work, the more precise the approximation, the more expensive the model is to use.

2) In the United States, forecast-model research is centralized at the National Centers for Environmental Prediction (NCEP) of the National Weather Service in Suitland, Maryland. There, a cutting-edge supercomputer is tasked with operating four primary models. Two of the styles are concerned with North America and its environs. The other two versions surround the entire globe in a standardized manner. Each domain has a basic model that is intended for fast computation as an early update even though machine problems occur. For each domain, the other model is more comprehensive, giving a better solution at a higher cost.


1) When a forecaster sets out to estimate a particular variable, such as the minimum temperature on a given night in the city where he or she is based, he or she has access to a wealth of observed and model-generated evidence. However, none of the data can be used to make a concrete prediction.

2) In the current scenario, the forecaster must also apply knowledge of average climatic conditions, local microclimate fluctuations, and standard model behaviour. The NWS has made significant efforts to express this kind of additional data using statistical regression equations. The coefficients in these equations differ depending on the geographical area and season.


People have attempted to predict the weather for centuries. The Babylonians used cloud formations and astrology to forecast conditions in 650 BCE. Aristotle's Meteorologica, written about 350 BCE, identified weather patterns. Theophrastus also compiled the Book of Signs, a book on weather forecasts. Weather prediction lore in China dates back to at least 300 BCE, around the same period as ancient Indian astronomy developed weather-prediction methods. Observed cycles of events, also known as pattern recognition, is used in ancient weather forecasting methods. It has been noted, for example, that if the sunset was especially red, the next day was usually sunny. This knowledge was passed down over the years, resulting in weather lore. However, not all of these forecasts are accurate, and many of them have been proved to be unreliable after being subjected to stringent statistical research.

Did You Know?

  1. A cricket's chirps can be used to determine the temperature.

  2. -89.2°C was the coldest temperature ever officially reported.

  3. A "BUST" is a term for getting the forecast wrong.

FAQ (Frequently Asked Questions)

1. What's the Difference Between a Forecast and a Weather Report?

Ans: Weather refers to the condition of the atmosphere, such as how hot or cold it is, how warm or dry it is, how quiet or stormy it is, and how sunny or gloomy it is. The troposphere, which is just below the stratosphere, is where the majority of environmental events on Earth take place whereas, weather forecasting is the use of science and technology to determine atmospheric conditions for a given place and period.

2. Is it Possible to Predict the Weather Precisely?

Ans: A seven-day forecast can correctly predict the weather about 80% of the time, and a five-day forecast can predict the weather about 90% of the time. A 10-day-or longer-forecast, on the other hand, is just about half of the time right. Meteorologists render predictions using computer algorithms such as weather models. Since we can't gather data from the future, forecasts must rely on projections and expectations to forecast the weather. Since the atmosphere is constantly evolving, those forecasts become less accurate as one moves forward into the future.