His family says he died of cardiac arrest earlier Wednesday.
Many of you, our viewers, know Bob from his many years reporting but mostly as a weatherman here on Action news.
Bob Buchanan retired in the mid 1990's.
His family says he loved what he did and it was a joy for him to be able to do it for so many years.
Since his retirement, Bob has had open heart surgery, he suffered a stroke a few months ago in November, and was recently diagnosed with lymphoma.
But, again, he died of cardiac arrest earlier today.
Bob and his wife Lay-ko raised 5 children and they have 8 grandchildren.
We'll have more on his passing Thursday, on Action News.
Again, Bob Buchanan, dead at age 73.