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Weather Underground also established a forum, weather forecasting competition, blog and Facebook page to provide a platform for weather enthusiasts around the globe. Since the establishment of the website, it has attracted over 100 million views worldwide, becoming the most popular weather-related website beside Hong Kong Observatory.
A weather map, also known as synoptic weather chart, displays various meteorological features across a particular area at a particular point in time and has various symbols which all have specific meanings. [1] Such maps have been in use since the mid-19th century and are used for research and weather forecasting purposes.
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The representation is made on a temperature-relative humidity, instead of a standard psychrometric chart. The comfort zone in blue represents the 90% of acceptability, which means the conditions between -0.5 and +0.5 PMV, or PPD < 10%.
A prognostic chart is a map displaying the likely weather forecast for a future time. Such charts generated by atmospheric models as output from numerical weather prediction and contain a variety of information such as temperature , wind , precipitation and weather fronts .
After an hour, JPEGView stops, the weather maps are deleted a new set of maps are downloaded. JPEGView starts again and the new maps are displayed. The specific computers used in the weather map display system are two Macintosh IIvx computers built in 1992, a Macintosh LC III from 1993, a Macintosh Centris 610 from 1994 and two Power Macintosh ...
Think of it as 12 rows, one for each month, with left column for average low temperature, middle column for average high temperature and right column for precipitation. maxprecip= Supply highest monthly precipitation number if the blue precipitation bars pop out of the chart (happens if any of the monthly numbers is greater than about 750 mm ...