“NBC Nightly News” is going to expand to an hour tonight. As we mentioned earlier, Brian Williams will anchor from the Jersey Shore, which is under a mandatory evacuation as Hurricane Irene approaches. NBC News has the resources of the Weather Channel, and is planning to use Bryan Norcross and Jim Cantore in the broadcast as well as seven NBC News correspondents stationed up and down the East Coast.

ABC’s “World News with Diane Sawyer” will include reports from Weather Editor Sam Champion and a team of correspondents. Tonight’s “Nightline” will be all about Irene, with an updated West Coast version. And on Sunday, George Stephanopoulos and Robin Roberts will anchor a special 3-hour edition of “Good Morning America” from Times Square beginning at 7am. “GMA” weekend anchors Dan Harris and Bianna Golodryga also report.

CBS’s Scott Pelley will be in for “Evening News” tonight anchoring from Battery Park City, which is in Zone A of the NYC evacuation zone. He’ll be back Sunday morning for a special 11amET newscast when the storm is expected to be over the Tri-State area. This follows “Sunday Morning” and “Face the Nation” which will also cover the storm.