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  2. List of regional snowfall index category 5 winter storms

    en.wikipedia.org/wiki/List_of_Regional_Snowfall...

    Out of the over 500 historical storms assessed since 1900, only 26 storms have been given a category 5 ranking. The highest ranking storm on the list is the Great Blizzard of 1978, which scored a value of 39.07. The most recent storm to receive a category 5 ranking is the January 2016 United States blizzard, which scored a value of 20.14. The ...

  3. Convergence zone - Wikipedia

    en.wikipedia.org/wiki/Convergence_zone

    A convergence zone in meteorology is a region in the atmosphere where two prevailing flows meet and interact, usually resulting in distinctive weather conditions. [1] This causes a mass accumulation that eventually leads to a vertical movement and to the formation of clouds and precipitation . [ 1 ]

  4. Weather forecasting - Wikipedia

    en.wikipedia.org/wiki/Weather_forecasting

    Ancient weather forecasting methods usually relied on observed patterns of events, also termed pattern recognition. For example, it was observed that if the sunset was particularly red, the following day often brought fair weather. This experience accumulated over the generations to produce weather lore.

  5. Regional snowfall index - Wikipedia

    en.wikipedia.org/wiki/Regional_Snowfall_Index

    The regional snowfall index (RSI) is a scale used by NOAA to assess the societal impact of winter storms in the eastern two-thirds of the United States and classify them into one of six categories. The system was first implemented in 2014, and is a replacement for the Northeast Snowfall Impact Scale (NESIS) system which the National Climatic ...

  6. 10M under winter weather alerts across Northeast and Midwest ...

    www.aol.com/10m-under-winter-weather-alerts...

    Around 10 million people are under winter weather alerts Monday in the Great Lakes and Northeast regions, where some residents may be waking up to a White Christmas.

  7. Meteorology - Wikipedia

    en.wikipedia.org/wiki/Meteorology

    Meteorology is a branch of the atmospheric sciences (which include atmospheric chemistry and physics) with a major focus on weather forecasting.The study of meteorology dates back millennia, though significant progress in meteorology did not begin until the 18th century.

  8. A potent winter storm is expected to bring a significant swath of wintry weather across the central and eastern U.S. this weekend and into early next week. AccuWeather 4 hours ago

  9. Numerical weather prediction - Wikipedia

    en.wikipedia.org/wiki/Numerical_weather_prediction

    Weather reconnaissance aircraft, such as this WP-3D Orion, provide data that is then used in numerical weather forecasts.. The atmosphere is a fluid.As such, the idea of numerical weather prediction is to sample the state of the fluid at a given time and use the equations of fluid dynamics and thermodynamics to estimate the state of the fluid at some time in the future.