Flooded roads and subway stations — the latest on the rain and wind from Elsa causing a mess of the morning and adding to those flooding problems. Kathy Park and WNBC’s Janice Huff have everything you need to know to plan your weekend. Plus, as Pfizer says it’s developing a third dose booster shot, the White House continues to stress vaccine efficacy while some states push back on federal vaccination efforts. Craig Melvin and Sheinelle Jones learn more from NBC News’ medical contributor Dr. Vin Gupta. Gabe Gutierrez has the latest on the growing number of suspects arrested in connection with Haitian President’s assassination. And, Tom Llamas is in Tokyo with the latest on the state of the Olympics.