norm macdonald, the former snl star s long, private health battle announcer: this is nbc nightly news with lester holt. good evening, everyone as a hurricane, it was short-lived, but now tropical storm nicholas is still delivering a dangerous punch along the gulf coast tonight, water and lots of it 5 million people living under flash flood alerts, rain amounts as high as 20 inches possible as the storm makes a brutally slow crawl across parts of texas and louisiana after its landfall not far from houston early today with 75-mile-an-hour sustained winds. in this very active tropical season, nicholas the 14th named storm, the 8th to make a u.s. landfall, knocking out power to hundreds of thousands of homes and businesses morgan chesky is in the storm zone for us tonight with late details. reporter: tonight, nicholas on a gulf coast course crash first slamming