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by numpad0
555 days ago
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PWS is tower based broadcast. Everyone within range of a tower gets the alert. Data source is supposed to be local government weather authority, I think USGS and NOAA in US. Or the Meteorological Agency in Japan. You can do a location-based two way warning system and there are such services, but it's going to be laggy and won't scale to 100M+ simultaneous subscribers. One-way broadcast scales to the planet if wanted. |
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