ISOTACHS

I chose this map to illustrate isotachs just because it is terribly obnoxious but does get the message across! The blue lines filled in with bright shades of green and yellow are connecting points of equal wind speed. They are using contours and color to represent the third variable and it certainly shows up on the black background. I did have to take a second look to see what the map was since the states are outlined in a very pale orange color and the white isobars look like they are on top of the other layers. It is interesting how both sets of contour lines follow a similar pattern starting in the north and making a sweep south and back up. This is a pretty neat comparison of the two variables together on a map dated October, 1996.

Link to website source:
http://www.atmos.washington.edu/~mcmurdie/oct96/oct96_labs.html