|Residence||Natick, Massachusetts |
|Alma mater||City College of New York (B.S., Meteorology, 1970)|
New York University (M.S. Meteorology) 
|Occupation||TV news meteorologist|
He began his career as a meteorologist for Universal Weather, Inc. preparing forecasts for aviation and industry. He also taped reports for radio stations in New York and Connecticut as well as teaching at New York University.
Leonard first came to Boston TV in May 1977 at Channel 7, then known as WNAC-TV. For the first few years, he was a staff meteorologist. By the time the station was sold to New England Television and became WNEV-TV in 1982 (the same ownership would rename it again to WHDH in 1990), Leonard became chief meteorologist, the role he would hold there for the next 20 years. During his long tenure at Channel 7, Leonard has been named "Best Meteorologist" by Boston Magazine in 1984, '86, '88, and '92. Leonard was also a meteorologist for radio station WROR-FM in 1980.
He left WHDH-TV in April 2002 and joined WCVB-TV in that same year. After the retirement of then-chief meteorologist Dick Albert in 2009, Leonard was once again promoted to chief meteorologist, this time at WCVB.
In late 2010, he contributed to the book, Extreme New England Weather, with his story of the Northeastern United States blizzard of 1978.
Leonard is an avid outdoorsman and lecturer at Harvard, MIT, and Boston Medical Center. He is a charter member of the National Weather Association. He's been called the dean of Boston meteorologists.
- 1984, 1986, 1988, and 1992 "Best Meteorologist" by Boston Magazine
- 1999 Fellow of the American Meteorological Society 
- 1999 winner of the Award for Outstanding Service by a Broadcast Meteorologist from the American Meteorological Society
- 2003 Silver Circle Award from NATSNE (National Academy of Arts and Sciences New England Chapter) for more than twenty-five years of broadcast excellence
- Two New England Emmy Awards for outstanding achievement in television weathercasting
- "Tracey Moskowitz, Stephen Amdur", The New York Times, October 29, 2010
- "NWA SPONSORS SKYFEST AT THE BLUE HILL OBSERVATORY",NATIONAL WEATHER ASSOCIATION NEWSLETTER, No. 99-4,5 April–May 1999. " ... Harvey Leonard Moskowitz from WHDH-TV7 (another charter NWA member) closed out the program ..."
- "Bio: Harvey Leonard", WCVB-TV
- "Profile: Harvey Leonard WHDH-TV", boston.com
- "Approval of Fellows", Minutes of the meeting of the AMS Council, American Meteorological Society, 30 September and 1 October 1999, Boston, Massachusetts
- on YouTube