• A 5-day weather forecast today is as reliable as a 2-day forecast was 20 years ago.
  • The most accurate weather forecasts are made by advanced computers, with analysis and interpretation added by meteorologists.
  • Once a forecast is made, it is broadcast by satellites to more than 1,000 sites around the world.
  • Numerical weather prediction calculates what will happen over time at various altitudes for a grid of evenly spaced locations.
  • Using the results calculated by the model, the program projects weather further into the future.
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