Miami English

The Miami accent is an evolving American English regional accent, or sociolect-in-formation, spoken in South Florida, particularly in Miami-Dade county, originating from central Miami. The Miami accent is most prevalent in younger, Hispanic, locally-born South Floridians who live in greater Miami and Miami Beach. This ethnolect is a native variety of English.

The Miami accent developed amongst second- or third-generation Miamians, particularly young adults whose first language was English, but were bilingual. Since World War II, Miami's population has grown rapidly every decade, due in part to the post-war baby boom. In 1950, the US Census stated that Dade County's population was 495,084. Beginning with rapid international immigration and the Cuban exodus of the late 1950s, Miami's population has drastically grown every decade since then. Many of these immigrants began to inhabit the urban industrial area around Downtown Miami. By 1970, the US Census stated that Dade County's population was 1,267,792. By 2000, the population reached 2,253,362. Growing up in Miami's urban center, second-, third-, and fourth-generation Miamians of the immigration wave of the 1960s and 1970s, developed the Miami accent. It is now the customary dialect of many citizens in the Miami metropolitan area.

The Miami accent is a native dialect of English, not learner English or interlanguage. It is possible to differentiate this variety from an interlanguage spoken by second-language speakers in that the Miami accent does not generally display the following features: there is no addition of /ɛ/ before initial consonant clusters with /s/, speakers do not confuse of /dʒ/ with /j/, (e.g., Yale with jail), and /r/ and /rr/ are pronounced as alveolar approximant [ɹ] instead of alveolar tap [ɾ] or alveolar trill [r] in Spanish.

...
Wikipedia