Doppler radar tower near Portland, Maine, part of the US-wide Nexrad weather radar system. NOAA has a KML file listing the locations of all the radars in the Nexrad system: www.ncdc.noaa.gov/oa/radar/nexrad.kmz
http://www.ncdc.noaa.gov/nexradinv/index.jsp
Information:
http://www.ncdc.noaa.gov/oa/radar/radarresources.html#WHATIS