This is an interesting visualization, but a bit confusing too. The daily temperature record map only shows the # of days since the last temp record was broken,

This is an interesting visualization, but a bit confusing too. The daily temperature record map only shows the # of days since the last temp record was broken, so it is sort of a snapshot and doesn't depict any trend. I'd like to see each location marked for the number of temperature records broken in the past N years instead. The all-time temperature record map is more informative, but even that would be helped by some kind of a slider or animation that lets you see the records evolve over time. The Pacific Northwest heat wave from last year is pretty clearly visible though.