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  2. Probability of precipitation - Wikipedia

    en.wikipedia.org/wiki/Probability_of_precipitation

    The Weather Channel's definition may include precipitation amounts below 0.01 inch (0.254 mm) and includes the chance of precipitation 3 hours before or after the forecast period. This latter change was described as less objective and more consumer-centric. [5] The Weather Channel has an observed wet bias – the probability of precipitation is ...

  3. Quantitative precipitation forecast - Wikipedia

    en.wikipedia.org/wiki/Quantitative_precipitation...

    Within the United States, the Hydrometeorological Prediction Center, [20] River Forecast Centers, [1] and local forecast offices within the National Weather Service create precipitation forecasts for up to five days in the future, [21] forecasting amounts equal to or greater than 0.01 inches (0.25 mm). Starting in the mid-to-late 1990s, QPFs ...

  4. Life-threatening flash flooding, historic rainfall possible ...

    www.aol.com/news/life-threatening-flash-flooding...

    Extreme southern California (including San Diego metro area) is forecast to pick up 1 to 3 inches of rain, with locally higher amounts up to 5 inches.

  5. Probabilistic forecasting - Wikipedia

    en.wikipedia.org/wiki/Probabilistic_forecasting

    Probabilistic forecasting summarizes what is known about, or opinions about, future events. In contrast to single-valued forecasts (such as forecasting that the maximum temperature at a given site on a given day will be 23 degrees Celsius, or that the result in a given football match will be a no-score draw), probabilistic forecasts assign a probability to each of a number of different ...

  6. Rain, wind and snow in the forecast for Northern California ...

    www.aol.com/rain-wind-snow-forecast-northern...

    Here’s the weather forecast for Northern California, as of Monday morning: TUESDAY The first wave of precipitation will mainly hit the northern valley, with the highest amounts concentrated in ...

  7. Rain enters California forecast again: What to expect - AOL

    www.aol.com/news/rain-enters-california-forecast...

    The week starts off with mild weather but the chances for rain and mountain snow increase as the weekend approaches, according to the National Weather Service. Rain enters California forecast ...

  8. Weather forecasting - Wikipedia

    en.wikipedia.org/wiki/Weather_forecasting

    It remains a useful method of observing rainfall over data voids such as oceans, [78] as well as the forecasting of precipitation amounts and distribution in the future. A similar technique is used in medium range forecasting, which is known as teleconnections, when systems in other locations are used to help pin down the location of another ...

  9. Rain enters Southern California forecast: Here's when - AOL

    www.aol.com/news/rain-enters-southern-california...

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