The program was preceded by Noticias y Más in 1991 with Raul Peimbert and Jackie Nespral anchoring. Nespral left the show later that year and was replaced by Myrka Dellanos. On February 14, 1994, the show was replaced by a new program called Primer Impacto. By this time, Peimbert left Univision, and was replaced by María Celeste Arrarás joining Dellanos as co-host. In 2002, Barbara Bermudo replaced Maria Celeste a couple of months after Maria had her new child and left the network for Telemundo's Al Rojo Vivo. Fernando del Rincón arrived in 2002. Carmen Dominicci also came to the show in 2002. In 2004, after 10 years on the show, Myrka Dellanos left the program. In 2005 Carmen Dominicci left as well, but she came back from time to time as anchor or reporter. In 2006, Satcha Pretto joined the program, and would sometimes fill in for Bermudo or Del Rincon whenever they had the day off. In 2007, Ilia Calderón joined the program to fill in for those who have missed the show. Fernando Del Rincon and Carmen Dominicci were fired from the program and the network in 2008 as a result of allegations made by Dominicci of domestic abuse from Del Rincon. On June 3, 2011 it was announced that Pamela Silva Conde would be joining Primer Impacto, replacing Ilia Calderón who will stay on "Noticiero Univision Edición Nocturna". "Primer Impacto Extra" Weekend Anchor Satcha Pretto left the program to become the new News Anchor for Despierta America. Natalia Cruz replaced Satcha Pretto. In 2017, Michelle Galvan replaced Barbara Bermudo, after she left Univision after 14 years as anchor. Walter Mercado provided the flamboyant astrology predictions for the show. He announced on January 8, 2010 that he and Univision have parted ways after fifteen years. Maria Elena Salinas and Edna Schmidt have both had guests co-hosting duties on the show.
Segments
There are various segments in Primer Impacto, the most important are: news of the U.S. and the world, República Deportiva, movies, weather, horoscope, curiosities and the main story of the day.
Carmen Dominicci - Co-Anchor In 2011, she joined as a co-host and correspondent for the "Al Rojo Vivo" news program and joined the special investigative team of Noticias Telemundo.
Satcha Pretto - Weekend Anchor left the program to become the new News Anchor for Univisions Despierta America.
Myrka Dellanos - Co-Anchor In 2013, she joined as host and contributor for American-based Hispanic network Estrella TV.
Ilia Calderón - stay on "Noticiero Univision Edición Nocturna."