Rjukan Weather Forecast (2024)

FAQs

What is the most accurate weather predictor? ›

Powered by proprietary GRAF technology (Global High-Resolution Atmospheric Forecasting), The Weather Company is The World's Most Accurate Forecaster¹ and a trusted weather partner for people and businesses everywhere.

Around 650 B.C., the Babylonians tried to predict short-term weather changes based on the appearance of clouds and optical phenomena such as haloes. By 300 B.C., Chinese astronomers had developed a calendar that divided the year into 24 festivals, each festival associated with a different type of weather.

If the goose honks high, fair weather; if the goose honks low, foul weather. Birds flying low, expect rain and a blow. If the lark flies high, expect fair weather. If the rooster crows on going to bed, you may rise with a watery head.

The study analyzed 120 million forecasts from over 1,000 locations globally over a four-year period ending December 31, 2018, and AccuWeather was found to be the clear winner as the most accurate provider of weather forecasts in temperature, precipitation and wind speed– a clean sweep of all categories -- for a 1-5 ...

Polar orbiting satellites provide the information most useful for long-term weather forecasting. These satellites use instruments to measure energy, called radiation, emitted by the Earth and atmosphere. This information is incorporated into weather models, which in turn leads to more accurate weather forecasts.

AccuWeather is recognized for its weather accuracy leadership in a new global report from ForecastWatch, a leading third-party weather forecast monitoring and assessment company.

To extend those records, paleoclimatologists look for clues in Earth's natural environmental records. Clues about the past climate are buried in sediments at the bottom of the oceans and lakes, locked away in coral reefs, frozen in glaciers and ice caps, and preserved in the rings of trees.

While on any given year the first day of the first month could be up to 20 days off from the vernal equinox, on average the length of a year was very well approximated by the Metonic cycle; the computed average length is within 30 minutes of the true solar year length.

Ancient Egyptian seasons were based around the rise and fall of the Nile - flooding, growing time in the fertile soil left behind the floods, and low water time when they took in the harvest. They also used a measuring device known as a Nilometer to get a better idea of what each year would bring.

Mackerel sky, mackerel sky, never long wet, never long dry. If three nights dewless there be, 'twill rain, you're sure to see. If a heavy dew soon dries, expect fine weather; if it lingers on the grass, expect rain in 24 hours.

What are some old wives' tales about weather? ›

“If a cold August follows a hot July, It foretells a winter hard and dry.” “For every fog in August, There will be a snowfall in winter.” “If the first week in August is unusually warm, The coming Winter will be snowy and long.” “A warm October, A cold February.”

"A rainbow in the east will be followed by a fine morrow, in the west by a wet day." - Weather Proverb.

In the United States, the best way to get accurate weather information is from the National Weather Service. Go to National Weather Service website. Many other countries also have their own weather services like Environment Canada in Canada. Their website is Weather Information.

The accuracy of weather predictions tends to decrease as the forecast period extends. The success rate for one-day forecasts is about 96-98%. It drops to about 90% for three-day forecasts. The more days in advance the forecast, the more likely it is that the weather will change.

As sophisticated as our climate models are, there are too many variables at play over time. No matter how advanced science gets, we'll always reach a wall on forecasting the weather into the future—and that threshold, on average, is two weeks.

NWP is widely recognized as the most accurate method for weather forecasting, utilizing complex mathematical algorithms to simulate atmospheric behavior.

Global models with worldwide weather forecasts

These models are all generally fairly accurate in predicting large scale patterns/features, but all will become less accurate through time. The ECMWF is generally considered to be the most accurate global model, with the US's GFS slightly behind.