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  2. Prognostic chart - Wikipedia

    en.wikipedia.org/wiki/Prognostic_chart

    Low-level prognostic charts used by aviators show the forecast between the Earth's surface and 24,000 feet (7,300 m) above sea level over the next two days. They show areas where visual flight rules are in effect, instrument flight rules are in effect, the height of the freezing level, the location of weather features, and areas of moderate to ...

  3. Get the Moses Lake, WA local weather forecast by the hour and the next 10 days. ... USA TODAY 8 hours ago Saturday snow forecast is just the start: Welcome to a 'parade' of winter weather.

  4. SIGWX - Wikipedia

    en.wikipedia.org/wiki/SIGWX

    Charts are typically being issued every six hours (0, 6, 12, 18 UTC). The SIGWX charts only show the forecast for the specific hour, however it is common place for parameters such as the JetStream, CAT & CB to be interpreted +/- 3 hours of the chart validity time. . Prognoses are typically prepared for two ranges of heights: SWH - High Level ...

  5. List of Storm Prediction Center high risk days - Wikipedia

    en.wikipedia.org/wiki/List_of_Storm_Prediction...

    A high risk severe weather event is the greatest threat level issued by the Storm Prediction Center (SPC) for convective weather events in the United States. On the scale from one to five, a high risk is a level five; thus, high risks are issued only when forecasters at the SPC are confident of a major severe weather outbreak.

  6. Aviation Weather Center - Wikipedia

    en.wikipedia.org/wiki/Aviation_Weather_Center

    AWC forecasts, in text and chart, conditions over all of the continental United States from the surface to over 20 km altitude (Aviation Area forecast). [1] These include freezing level, icing, wind and turbulence levels, cloudy areas and thunderstorms at various altitudes.

  7. Rapid Refresh (weather prediction) - Wikipedia

    en.wikipedia.org/wiki/Rapid_Refresh_(weather...

    The model is designed to provide short-range hourly weather forecasts for North America. The Rapid Refresh was officially made operational on 1 May 2012, replacing the Rapid Update Cycle (RUC). The model also serves as the boundary conditions for the higher-resolution High Resolution Rapid Refresh ( HRRR ) model, that uses a 3 km (1.9 mi) grid ...

  8. World Area Forecast Center - Wikipedia

    en.wikipedia.org/wiki/World_Area_Forecast_Center

    A World Area Forecast Centre (WAFC) is a meteorological centre that provides real-time meteorological information broadcasts for aviation purposes. These broadcasts are supervised by International Civil Aviation Organization (ICAO) in order to fulfill requirements of the ICAO Annex 3 covering meteorological information which is necessary for ...

  9. Weather forecasting - Wikipedia

    en.wikipedia.org/wiki/Weather_forecasting

    The simplest method of forecasting the weather, persistence, relies upon today's conditions to forecast tomorrow's. This can be valid when the weather achieves a steady state, such as during the summer season in the tropics. This method strongly depends upon the presence of a stagnant weather pattern.