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If the radar animation of the last hours shows local thunderstorms or precipitation cells forming and disappearing in an irregular manner, then the forecast is not vey accurate. High Resolution Version National Radar Sites Static Image Loop. The forecast works very well when weather fronts or large organized precipitation structures are moving regularly, without disappearing or being created. Real weather is more complex than just the displacement of existing precipitation cells. Longer forecasts are not possible, as new precipitation cells are developing or existing ones are disappearing within a short time. See the latest Montana Doppler radar weather map including areas of rain, snow and ice. This so called precipitation nowcast is the most accurate precipitation forecast possible but the forecast horizon is limited to about an hour. The rain/snow forecast is computed by estimating the movement of precipitation cells observed by radar and extrapolating this movement into the future. United States: How accurate is the radar based forecast? Moreover, some countries do not operate a weather radar network, and in those countries satellite data is used to estimate rainfall, which is less accurate than a realtime weather radar. Note that lightning is not shown on the forecast, as it cannot be predicted. Light blue indicates drizzle, blue a medium intensity, and red and yellow indicate very strong precipitation, usually associated with thunderstorms.Ĭurrent lightning strikes are marked with small orange dots on the map (Europe only). The different colours indicate the intensity of rainfall or snowfall. weather type forecasting. The radar map is updated every 5 minutes with a new radar observation. Study with Quizlet and memorize flashcards containing terms like The forecasting of weather by a computer is known as a. Please consult your device documentation for instructions.The weather radar ( United States) shows where it is currently raining or snowing. On mobile devices, you can save the bookmark as an easy-access icon similar to other apps. Reports include rain, snow, ice, and severe weather, as well as other significant information from storm spotters. Custom plots of Local Storm Reports across the Contiguous United States. For example, if you select "Weather for a location," then select a location, the bookmark will return to your location on your next visit. Plots of GEFS probabilistic forecast of precipitation, temperature, and sea-level pressure exceeding various thresholds. See the latest Washington Doppler radar weather map including areas of rain, snow and ice. See the latest Illinois Doppler radar weather map including areas of rain, snow and ice. You may bookmark the URL to return later to the same view with the selected settings. Interstate I-95 is the primary north-south corridor of the East Coast of the United States. This 1,908 mile long highway runs from Maine to Florida, and is the primary north-south corridor on the East Coast. The URL will automatically update as you select the view and settings. If youre planning a road trip along the East Coast of the United States, chances are good that youll be spending some time on Interstate I-95. This view is similar to a radar application on a phone that provides radar, current weather, alerts and the forecast for a location. This view combines radar station products into a single layer called a mosaic and storm based alerts. This view provides specific radar products for a selected radar station and storm based alerts. This site is organized into views that provide relevant radar products and weather information for a common task or goal.