Clarke was 84.
Clarke, known also in his post-retirement years for his gardening segments on KYW 1060, was employed at Channel 10 for nearly four decades before retiring at the end of 1997. He also was a radio and television announcer in a number of stops before moving to Philadelphia, including helping to start up a television station in Richmond, VA.
Clarke is most known for being a weather forecaster here in Philadelphia but he also anchored the Sunday evening news during the 1960's and 1970's, as well as covered health and science.
Clarke won an award from the Associated Press for his coverage of Hurricane Agnes in 1972.
Below is a video found on YouTube of Clarke's last on-air forecasts on NBC 10, including most of a tribute video of his time on air. The video is from December 31, 1997.
More information on Clarke's life is available on the Broadcast Pioneers of Philadelphia website.