Primer Impacto
The show is well known in Latin America for its tabloid format, and a focus on crime and sensationalistic reporting (including heavy use of caught-on-tape footage and airing of graphic imagery with little to no editing to fit broadcast standards), as well as entertainment news and human-interest stories; however, it also provides a general rundown of the day's headlines, as well as national weather and sports segments.
The program is broadcast live Monday through Friday at 5:00 p.m. Eastern and Pacific Time; weekend editions of the program (under the title Primer Impacto: Fin de Semana; "First Impact: Weekend Edition") were produced from March 2, 1994 until September 2011, when budget cuts at Univision forced the cancellation of its Saturday and Sunday editions (following an aborted attempt to restructure it as a weekday-only broadcast amid budget reductions imposed in 2009).
A condensed half-hour late edition of the program, Primer Impacto Extra, aired from January 1998 to September 20, 2019, as a lead-in for the network's 11:30 p.m. ET/PT newscast, Noticiero Univision: Edicion Nocturna; on September 23, 2019, Extra was replaced in the 11:00 p.m. slot by a rebroadcast of the early-evening edition of Noticiero Univision and Sabor de Mañana ("Taste of Tomorrow"), a five-minute filler segment—slotted between both broadcasts of the network's flagship news program—that previews Univision's news and entertainment/lifestyle shows for the next day.
Jackie Guerrido is the show's main weather forecaster, and also acts as the main fill-in presenter; both WLTV chief meteorologist Eduardo Rodríguez and Univision meteorologist Paola Elorza substitute for Guerrido in the event the latter is assigned to substitute as co-anchor or is absent.
By this time, Peimbert left Univision, and was replaced by María Celeste Arrarás joining Dellanos as co-host.
Arrarás had already substituted for Dellanos on Noticias y Más during a brief period while anchoring Noticiero Univision: Fin de Semana, and she was eventually rehired to co-host the show after being called by the producers.
The show also added then-husband-and-wife Fernando del Rincón and Carmen Dominicci as co-anchors of a new late edition, Primer Impacto Extra.
