Quiet storm is a radio format and a "super genre" of contemporary R&B, jazz fusion and pop music that is characterized by understated, mellow dynamics, slow tempos, and relaxed rhythms. It was pioneered in the mid-1970s by Melvin Lindsey, while he was an intern at the Washington, D.C. radio station WHUR-FM. The format was named after the title song on Smokey Robinson's 1975 album A Quiet Storm.
The listening audience of quiet storm was mainly "upscale urban" African Americans. The term quiet storm became a blanket term for mellow or soulful slow jams and smooth jazz of the sort played by radio programs influenced by Melvin Lindsey's format.
Melvin Lindsey, a student at Howard University, with his classmate Jack Shuler, began as disc jockeys for WHUR in June 1976, performing as stand-ins for an absentee employee. Lindsey's on-air voice was silky smooth, and the music selections were initially old, slow romantic songs from black artists of the 1950s, 1960s, and 1970s, a form of easy listening which Lindsey called "beautiful black music" for African Americans. The response from listeners was positive, and WHUR station manager Cathy Hughes soon gave Lindsey and Shuler their own show. The name of the show came from the Smokey Robinson song "Quiet Storm", from his 1975 album A Quiet Storm. The song developed into Lindsey's theme music which introduced his time slot every night. "The Quiet Storm" was four hours of melodically soulful music that provided an intimate, laid-back mood for late-night listening, and that was the key to its tremendous appeal among adult audiences. The format was an immediate success, becoming so popular that within a few years, virtually every station in the U.S. with a core black, urban listenership adopted a similar format for its graveyard slot.
In the San Francisco Bay Area, KBLX-FM expanded the night-time concept into a 24-hour quiet storm format in 1979. In the New York tri-state late night market, Vaughn Harper deejayed the quiet storm graveyard program for WBLS-FM which he developed with co-host Champaine in mid-1983. In 1993, Harper took ill and Champaine continued the program as Quiet Storm II. Following in the footsteps of KBLX, Lawrence Tanter of KUTE in Greater Los Angeles changed his station to an all-day quiet storm format from January 1984 until September 1987, playing "a hybrid that incorporates pop, jazz, fusion, international, and urban music". Addressing the misconception that quiet storm was only for blacks, Tanter said his listenership was 40% black, 40% white, and 20% other races.WLNR-FM in Chicago also changed in August 1985 to a 24-hour quiet storm program called "The Soft Touch", featuring more instrumental music and even straight-ahead jazz, a mix which sales manager Gregory Brown described as "not so laid-back" as other quiet storm shows. A notable feature of WLNR was that the four regular deejays were women.
Because of the popularity of his show, Lindsey saw his annual salary increase from $12,000 in 1977 to more than $100,000 in 1985. After signing a million-dollar, five-year contract with rival Washington DC station WKYS, he left WHUR at the end of August 1985, continuing the quiet storm format on WKYS for five years starting in November with a show called "Melvin's Melodies". Part of Lindsey's original style was to mix different decades of music together, for instance playing a Sarah Vaughan ballad in between more modern numbers. Lindsey died of AIDS in 1992 at the age of 36, but the quiet storm format he originated remains a staple in American radio programming. WHUR radio still has a quiet storm show, and many urban, black radio stations still reserve their late-night programming slots for quiet storm music. WHUR operator Howard University has registered "Quiet Storm" as a trademark for "entertainment services, namely, a continuing series of radio programs featuring music".
Quiet storm programming is credited with launching the careers of Luther Vandross and Anita Baker, and with introducing Sade to U.S. audiences. Classic quiet storm recordings include Frankie Beverly and Maze's "Golden Time of Day," Marvin Gaye's "Let's Get It On", the orchestrations of Philadelphia soul, the recordings of Al Green, Gil Scott-Heron, Barry White, and Bill Withers, much of jazz guitarist Wes Montgomery's work during his CTI Records years, and the work of jazz-funk saxophonist Grover Washington, Jr. In 1986, Peabo Bryson released an album entitled Quiet Storm.
Quiet storm was most popular as a programming niche with baby boomers from the mid-1970s to the early 1990s. During this era, it promoted a noticeable shift in the sound of R&B of the time. Quiet Storm songs were in most cases devoid of any significant political commentary and maintained a strict aesthetic and narrative distance from issues relating to black urban life. Quiet Storm appropriates R&B and soul "slow jams" and recontextualizes them into rotations with their peers and predecessors.  People such as Anita Baker, Luther Vandross, and Sade became the faces of R&B without the traditional "grit" and a shift in the focus to sexual activities. Some, such as Mark Anthony Neal, believe that this shift represents a cultural appropriation to make R&B more marketable to white audience. Others argue that it is simply representing the growing affluence of middle-class African Americans.
Music journalist Jason King wrote, "Sensuous and pensive, quiet storm is seductive R&B, marked by jazz flourishes, 'smooth grooves,' and tasteful lyrics about intimate subjects. As disco gave way to the 'urban contemporary' format at the outset of the 1980s, quiet storm expanded beyond radio to emerge as a broad catchall super-genre."
In the 1990s, Canadian adult contemporary station CFQR-FM in Montreal aired a Quiet Storm program featuring new-age music. At least two non-commercial FM stations, the community-based WGDR in Plainfield, Vermont, and its sister station, WGDH in Hardwick, Vermont (both owned by Goddard College), have been broadcasting a weekly, two-hour "Quiet Storm" program since 1998--a 50-50 mix of smooth jazz and soft R&B, presented in "Triple-A" (Album Adult Alternative) style, with a strong emphasis on "B" and "C" album tracks that most commercial stations often ignore.
Most recently, in 2007, Premiere Radio Networks launched a nationally syndicated nightly radio program based upon the quiet storm format, known as The Keith Sweat Hotel. That program, in edited form, broadcasts under the Quiet Storm name (as The Quiet Storm with Keith Sweat) on WBLS in New York City.