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they're not
They're not.
Environment Canada issues new weather forecasts every four hours normally. If there is an unusual weather event coming such as hurricanes then the weather forecasts are updated more frequently.
The best place to find weather forecasts world wide is to check on weather or weather channel websites. They often have hourly and even two week forecasts that might be useful to you.
Meteorologists track the movement of storms, clouds, winds, and other variables, so the forecasts are based on their observations. Weather forecasts are often very accurate, but sometimes there might be an unexpected change in one of the variables, causing a mistaken prediction.
Constantly. Most (nearly all) airports have a weather computer available for pilots to use. These are provided for free and have up to the minute conditions, forecasts and satellite images. Additionally, the FAA provides a free 800-number pilots can call to receive weather briefings.
it is more accurate because it gets a better reading.
A Chief Meteorologist is a senior-level meteorologist who leads a team of meteorologists in a weather forecasting department. They are responsible for analyzing weather patterns, making predictions, and providing weather forecasts to the public through various platforms such as television, radio, or online. They often have extensive experience and knowledge in meteorology and are seen as the face of the weather department.
As with all weather forecasts, there is always some uncertainty in severe weather outlooks. In the case of the storms that occurred in late May 2016, conditions favored supercells with strong rotation more than was expected. Forecasts are based heavily on computerized models, which are imperfect but are often tweaked and improved.
Probability is often used to develop projections, forecasts and budgets.
By the old man and women were often consulted in major decisions.
weather often changes everyday