Leslie R. Lemon (January 19, 1947 – May 29, 2020) was an American meteorologist bridging research and forecasting with expertise in weather radar, particularly regarding severe convective storms.

Lemon was, along with Charles A. Doswell III, a seminal contributor to the modern conception of the supercell convective storm which was first identified by Keith Browning,[1] and he developed the Lemon technique to estimate updraft strength and thunderstorm organization (in highly sheared environments) also as a continuation of Browning's work.

Lemon embarked on graduate school studies but it was during the Vietnam era so he wasn't able to continue, and he instead joined the NOAA Commissioned Corps.

[5] He later taught widely on the subjects of radar and severe convective storms throughout the United States and internationally, leaving the public sector to work at various companies.

He was also an expert storm damage surveyor and surveyed the first documented tornado in Romania while doing radar work there.