ABC NEWS ADDS ONE-HOUR LIVE SPECIAL SUNDAY NIGHT TO EXTENSIVE COVERAGE OF HURRICANE IRMA

'Hurricane Irma: Monster Storm, A Special Edition of 20/20' Airs Sunday, September 10, at 7:00 p.m. EDT on The ABC Television Network

ABC News will air a one-hour live special on Sunday night with the latest updates from Florida and provide extensive live coverage this weekend of Hurricane Irma, the largest Atlantic storm in a decade. "Hurricane Irma: Monster Storm, A Special Edition of 20/20" will air from 7:00-8:00p.m. ET with ABC News Chief Anchor George Stephanopoulos and "20/20" Anchor Elizabeth Vargas anchoring live from New York. "World News Tonight" Anchor David Muir will lead coverage from the storm zone. With the hurricane reaching its peak during the evening, the one-hour special will follow the storm's trajectory and broadcast live updates on the impact and damage in Florida.

As previously announced, on Sunday ABC News will air live coverage from 6:00 a.m.-12:00 noon, EDT. Stephanopoulos will lead coverage from ABC News headquarters in New York, and Muir will lead coverage on the ground. Stephanopoulos will anchor a special report to the full network from 6:00-7:00 a.m. EDT; special editions of "Good Morning America" air from 7:00-9:00 a.m., EDT and 10:00-11:00 a.m. EDT; and special editions of "This Week with George Stephanopoulos" will air live 9:00-10:00 a.m. EDT and 11:00 a.m.-12:00 p.m. EDT.

Muir will anchor special editions of "World News Tonight with David Muir" Sunday night and in the aftermath of Hurricane Irma. Chief Meteorologist Ginger Zee will report on the storm's latest developments from New York. "Good Morning America" News Anchor Amy Robach, Senior Meteorologist Rob Marciano, Chief National Correspondent and "World News Tonight" Weekend Anchor Tom Llamas, Senior National Correspondent Matt Gutman and Correspondents Gio Benitez and Victor Oquendo will also report from Florida; Correspondents Steve Osunsami, T.J. Holmes and Eva Pilgrim will track the storm on location as it moves away from Florida.

Correspondent David Kerley will cover travel disruption and FEMA response; Chief Business and Economic Correspondent Rebecca Jarvis will report on the potential economic impact of the storm; and Congressional Correspondent Mary Bruce will cover the federal government's and the administration's response.

ABC News Digital will offer full live coverage and analysis of Hurricane Irma on all ABC News platforms, social sites, OTT and mobile apps, including the latest breaking news, reporter notebooks, vignettes from affected areas and live reports from ABC News correspondents on www.abcnews.com/live.

ABC News Radio Correspondents Jim Ryan and Alex Stone report from Florida. Radio will provide multiple one-minute updates each hour beginning 6:00 a.m. EDT on Saturday. On Sunday live coverage will be anchored by Correspondent Aaron Katersky from 6:00 a.m.-12:00 noon EDT and 7:00-8:00 p.m. EDT, joined by Ryan and Stone, and Correspondent Karen Travers.

ABC NewsOne, the affiliate news service of ABC News, will offer coverage from Correspondents Marci Gonzalez, Stephanie Ramos and Molly Hunter from Florida for more than 200 ABC affiliates and news partners.