The Green Living Guy

I wonder who did the forecast seeing this storm coming!  For a spectacular wide angle photograph. It’s of a huge storm cloud showing off its awesome might. All as I see it looming over the ocean. For a portion of the beach can be seen here. This was a ‘super cell’ storm cloud. It was also located off the coast of Queensland, Australia. This image was taken by petesphotography. It is also available through Getty Images.

Forecast this storm in Australia

Forecasters of the weather, most interestingly are often seen in a negative light.

I mean how precise are their forecasts. Yet, what is the process behind them?

Weather forecasts can be incredibly useful. Especiallywhen planning activities and travel. They can provide valuable insight and help us make informed decisions. Despite their usefulness, however, it is important to remember that forecasts are often unreliable and can change suddenly due to the ever-changing weather patterns. To ensure you are up-to-date with the latest developments.  For that it is essential to stay informed and be prepared for potential changes.

I have a deep dislike for my weather app. Disappointment when it predicted rain. So I missed a sunny day? Unacceptable! Being caught unprepared is not good. That’s because it was supposed to be warm. However, it was chilly instead? Those people need to be held accountable!

Since the 1860s, a great deal of progress has been made in weather forecasting. This began with Robert FitzRoy. For he was a former captain of the HMS Beagle. For he attempted to forecast storms. All by transmitting weather data. I mean between two locations in the UK. Nevertheless, it can still feel as if we are trying to make predictions. I mean through seemingly unscientific means. That’s such as reading tea leaves. I mean or the phases of the moon.

The last few years have seemingly been worse than in the past.

However, the Bureau of Meteorology stated that their 2020-21 forecast accuracy improved by 2%.

So what could be causing this discrepancy?


There is still a general assumption that weather forecasts are inaccurate.

James Renwick, a New Zealand weather and also a climate researcher. For he stated that examining how forecasts have improved. I mean over time. For it is an exciting question to ponder. He continued, explaining that the one-day forecasts are almost always accurate. In addition, two-day forecasts are almost as reliable.

It is still common for people to think that weather forecasts are always inaccurate.


Many conspiracy theories and ideas exist. Especially in support of this idea. One that the weather forecast is not as accurate as it used to be. That’s ranging from COVID to earthquakes to climate change. It could be something you heard from a friend. I mean of a friend. But after testing these theories with Renwick and BoM, wow. For it appears that the issue might be less about global issues. Because it’s more about what is going on in people’s minds.

Renwick declared this notion is off. For the notion of the weather becoming increasingly unpredictable is not correct.

It could be that unanticipated extremes are more frequent. Also they are difficult to accurately predict. Yet the fundamental patterns remain consistent. I mean just as they have been for thousands of years. Moreover and they will continue to remain constant. Especially in the next millennium.

The weather outlook for the future seems less optimistic. All due to current events. For that’s such as COVID-19. In addition, earthquakes and also climate change.

An astonishing amount of time and money are necessary. Especially to create the figures and signs. All seen on our weather applications.

Gathering data about current weather is the first step. All for forecasters. All which is collected from weather stations. As well as ships and aircrafts. Moreover and a great number of satellites. For it is important that this information is precise. All so as to ensure the accuracy of their predictions.

Next Steps after Data Obtained

After the updated meteorological information is obtained work begins. For it is fed into dedicated weather models. All to forecast what will take place in the near future. While this is most commonly done on powerful computers. Yet the mathematics that is used is the same. For it’s mainly based on the principles of fluid mechanics.

More on Renwick

Renwick, who commenced in meteorology, claims that the air and sea are merely two liquids on Earth. He adds that Newton’s theories can be utilized. All to understand how they move and transform.

In order to generate a forecast, the weather models progress. That’s through intervals of time that are small. This begins with the current weather. Moreover and then extrapolates what the weather may be like in 10 seconds. Once that 10-second projection is made, the model takes the data. For then it repeats the same process. All until it has a prediction. One that extends into the future.


As data moves further away from the present, the chances for errors to develop increase. This phenomenon is referred to as the butterfly effect. In order to counter this unpredictability, models are run multiple times. That’s with slightly varied “starting states”. This helps to reduce any uncertainty that may arise.

Extrapolations for the future days and weeks may be inaccurate. Also it’s  becoming increasingly distant. I mean from the actual weather conditions that will prevail.

Renwick states that if, after introducing a bit of noise into the initial state and running the model multiple times. For the forecasts start to deviate. Then we hear: “oh dear, the weather is not very predictable”.

Ideally, your app shouldn’t just tell you it is likely to rain on Saturday. Yet instead it informs you that there is a 60% probability of precipitation.

More on Renwick Work

Renwick, who is now involved in climate change research. For he has contributed to the last three Intergovernmental Panel on Climate Change reports. In addition, he has noted that the climate models used for projections and weather models. For they are based on the same foundational principles. Those which extend far beyond the next week.

UK Met Office

The UK Met Office Hadley Centre utilizes the same ‘Unified Model’ for both climate modelling and weather forecasting. Whereas the perfect initial values are crucial for weather forecasting. Because they aren’t as important when dealing with climate modelling. Rather, climate models take into consideration CO2 levels in the air. For the amount of ice, and other lengthy-term elements. All to forecast the climate for decades or centuries.

As BoM and other meteorological sources strive to prove their competence, they have plenty to do. A multitude of data expressing their abilities has been featured on the BoM website.

Bureau Accuracy

The Bureau has set a benchmark of accuracy for itself, using a measure of 2°C difference from the actual temperature, and in 2020-21, its predictions for the maximum and minimum temperature were 89.3% and 80.9% precise respectively.

A graph depicting the accuracy of the Bureau of Meteorology’s next day forecast temperatures from 2016 to 2021 is shown below. The credit for this graph belongs to the Bureau of Meteorology.

The Bureau of Meteorology acknowledges that forecasting precipitation is more challenging than predicting the temperature level since it can be localized to particular areas.

The Bureau of Meteorology (BoM) notes that while temperature and wind tend to be similar across vast regions, the amount of rainfall can be quite different. As such, their forecasts include information about the possibility of rain, as well as a potential range of rainfall levels.

The BoM was unable to predict the chances of rain for the following day with precision, but they did indicate the possible range of rainfall for the next day. A graph for 2020-21 reveals that the Bureau was more accurate than in the past five years. However, the same graph displays that they generally underestimate the amount of rain that actually falls.

When looking beyond the next day’s forecast, there is more potential for uncertainty due to its increased temporal distance.

The graph below, provided by the Bureau of Meteorology, illustrates the range of rainfall forecast accuracy from 2016 to 2021.

Model Forecasts

According to Nate Byrne, the weather presenter from ABC News Breakfast, models of forecasting are excellent when it comes to predicting the weather within 24 and 48 hours. They remain fairly accurate up to 72 hours, but afterward it becomes less reliable.

A 1 km/h mistake in wind speed over a day would lead to that bit of air being located 24 km off from its expected position. Nevertheless, given a period of 7 days, this would give rise to a deviation of hundreds of kilometres.

According to Byrne, the precis forecasts which generally display highs and lows and a picture of rain or sunshine do not give us the complete picture.

Forecasting models are very effective in predicting the future for a period of 24 hours, and they are still reliable to a good extent for up to 48 hours.

Apart from BoM, many meteorological organisations offer a comprehensive forecast that includes weather conditions at specific times during the day, wind speeds, and other data that can help you to better understand what the day’s weather will be like.

According to Byrne, a more detailed forecast for an area might include a sunny morning, followed by clouds increasing throughout the afternoon, culminating in showers of rain and winds shifting to a south-westerly 10 to 15 knots. He notes that for areas where operational accuracy is vital, these predictions are far more comprehensive than a mere precis.

If you inspect the forecast more closely, you’ll catch on. For you will see that it is only predicting rain to start in the evening. Consequently, you can still enjoy your lunchtime barbecue without fear of the rain.

An Accurate Forecast

Getting an accurate forecast requires you to consider which app you are using. It could be assumed that all weather data comes from the same origin. However, the information from a platform such as Google does not originate from the Bureau of Meteorology or any other regional source; it is in fact from The Weather Channel.

Byrne encourages using whatever is available on one’s phone, regardless of if they don’t worry about it.

The Bureau, created for the benefit of Australians, is held accountable for providing the most up-to-date information. In contrast, private companies which offer similar services are not subject to the same requirements.

Although it may feel helpful to know the weather for your wedding a month in advance, it is highly likely that the predictions are inaccurate.

It is important to be aware of any private organizations that create weather forecasts for weeks or months ahead. Even though it may appear to be useful to know what the weather will be like for your wedding day a month from now, it is most likely inaccurate.

According to both Byrne and Renwick, the best way to get the most reliable weather predictions is to rely on your regional state-run meteorological institution.

Renwick states that the meteorological organisations, such as the Bureau of Meteorology (BoM) and New Zealand’s MetService, will do an excellent job.

He adds that there are a number of private companies that provide weather data, although its quality varies from good to not so good.

Ensure the information is obtained from a reliable source. That is a great way to begin.

The amalgamation of these factors might be the cause of my climate complaining. I have a tendency to search for the forthcoming weekend’s prediction on a Monday, then not look at it again near the time, and then be outraged when the weather is not what I imagined it to be before the week had ended.

One could say that we are foretelling the future. It is amazing when one takes a moment to contemplate this concept.

Despite all the improvements in technology and proficiency, Renwick maintains that, “the future of anything is not certain.”

It is true that meteorologists are one of the few occupations that can predict what will take place in the future, often days or even weeks ahead. Even with the challenges they face and the not so pleasant feedback they receive, their predictions are correct almost all the time.

Byrne remarks, “[At BoM] there is a team of people who are devoted and work tirelessly to ensure they carry out the best work possible. It’s fantastic to consider that we are endeavoring to anticipate the future.”

Originally featured in Cosmos, the article Whatever the weather: how do they know? was published and delved into the topic of weather forecasting accuracy.

A depiction of Jacinta Bowler can be seen in the illustration accompanied with this text. She is a contributor to Cosomos Magazine.


The atmospheric conditions of our nation, our planet, are discussed regularly.


The original text suggests that tags are essential elements of a text. Re-phrasing it, one could state that tags are an integral part of a piece of writing.

The Bureau of Meteorology provides regular updates on climate, meteorology, and weather, delivering them on a weekly basis.

If you enjoy the Weekly, you’ll be a fan of COSMOS’ quarterly magazine.

The presence of technology has become pervasive and is now a part of everyday life. It is no longer something we have to go out and seek, but something we constantly encounter in our daily routines. From smartphones to computers to televisions. Because technology has become an integral component of our lives.


Weather forecasting has become increasingly important in recent years. Yet there is a common assumption that weather forecasts are inaccurate. In fact, two-day forecasts are almost as reliable as one-day forecasts. In addition, the 2020-21 forecast accuracy improved by 2%. Now yes, unanticipated extremes can also be difficult to accurately predict. Yet the fundamental patterns remain consistent. The process of forecasting involves gathering data from weather stations, ships, aircrafts and satellites. For it followed by feeding the information into dedicated weather models. This process is based on the principles of fluid mechanics and Newton’s theories. Although global events such as COVID-19, earthquakes and climate change can affect the outlook for the future. Especially the data and mathematics used to create these forecasts are still very reliable.


  1. Rising temperatures, extreme weather events, and changing precipitation patterns are all signs that the climate is changing. [1] The effects of climate change are already being felt in many places around the world. All because scientists are warning that the situation could get worse. Especially if the world does not take action. [2] To better understand the weather, we can use a variety of tools. I mean from satellites to ground-based instruments. [3] For example, the AirBoard is a portable, air powered, keyboard instrument. One that can help us better understand the weather by providing real-time data. [4] Additionally, websites such as provide up-to-date information about the weather and climate. [5] With these tools, we can gain a better understanding of the weather and how it is changing.

Main Article Source: Cosmos Magazine

References: [1] FarWide Introduces a 21st Century Outdoor Search Engine [2] Hohner AirBoard 37 – EURO UNIT [3] ལྡི་ལི་ཕྱག་མཛོད་ལ་འབྲེལ་བ་གནང་ཡུལ། – Gyuto Monastery
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