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Microsoft's Aurora system offers global 10-day weather and 5-day air pollution (CO 2, NO, NO 2, SO 2, O 3, and particulates) forecasts with claimed accuracy similar to physics-based models, but at orders-of-magnitude lower cost. Aurora was trained on more than a million hours of data from six weather/climate models. [83] [84]
The critical success index, or CSI, divides the overlap between the forecast and observed fields by the combined size of the forecast and observed fields: the goal here is a score of 1. The false alarm rate, or FAR, divides the area of the forecast which does not overlap the observed field by the size of the forecasted area. The goal value in ...
Thunderstorm Forecast (1999–2003) – national forecast map outlining areas of general (orange) and severe (red) thunderstorm activity forecast to occur through the upcoming daypart (updated daily at around 4:00 a.m. and 6:00 p.m. or occasionally 10:00 a.m. ET, with the valid forecast period lasting through mid-morning, midday or midnight of ...
2. Click the weather icon in the top-left corner of the page. 3.Select the Settings icon next to current city name - The Location Settings menu will appear. 4. Select Add New Location. 5. In the City or ZIP code search bar enter the ZIP code or city you wish to track 6. Select the city name to add the location.
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Once per day, NWS meteorologists issue a coded fire weather forecast for specific United States Forest Service observation sites that are then input into the National Fire Danger Rating System (NFDRS). This computer model outputs the daily fire danger that is then conveyed to the public in one of five ratings: low, moderate, high, very high, or ...
An example of a forecast product from the GFS, in this case a 96-hour forecast of 850 mb geopotential height and temperature. The Global Forecast System (GFS) is a global numerical weather prediction system containing a global computer model and variational analysis run by the United States' National Weather Service (NWS).
It has 20 members (plus control) and runs out 16 days, the same range as the American global forecast system. The GEPS runs alongside the GFS ensemble to form the North American Ensemble Forecast System. A regional ensemble prediction system (REPS), covering North America and also having 20 members plus control, runs out 72 hours.