The Weather Channel is buying online weather veteran Weather Underground the Daily reports.

Weather Channel says that the buy will allow it to improve its weather forecasts. The company will also make use of the Weather Underground’s popular Wundermap, an interactive weather map and radar that allows users to overlay over a dozen variables.

The Weather Channel will also acquire Weather Underground’s entire staff, along with its San Francisco office, which The Weather Channel will use as regional office of its own.

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