High flood threat for Denver area Thursday, Friday

DENVER — A Flood Watch covers the entire Denver area Thursday, with the potential for an additional 2 to 3 inches of rain through Friday evening.

A relatively unusual long-duration rain event could drop totals of 3 or even 4 inches of rainfall in parts of the Denver area, a significant amount of rain. 

For context, Denver averages only about 14 or 15 inches of precipitation (rain and melted snow equivalent) in a full calendar year.

Steady, heavy rain will continue across northeast Colorado through at…