Close to Live Wind Map of Lower 48
The map is from Hint.fm and is, as some have suggested, "mesmorizing."
Surface wind data from the National Digital Forecast Database. (For those of you chasing top wind speed, note that maximum speed may occur over lakes or just offshore.)
These are 1-hour forecasts, downloaded once per hour. So what you're seeing is close to live data. We'd be interested in displaying data for the entire earth; if you know of a source of detailed live wind data for the entire globe, please let us know.
This is the collaboration site of Fernanda Viégas and Martin Wattenberg. We invent new ways for people to think and talk about data.