first alert weather 21 hours ago NBC6 First Alert forecast – Sept. 19, 2024 evening Meteorologist Steve MacLaughlin has the latest forecast Thursday, Sept. 19, 2024. US & World Videos 2:53 NBC6 First Alert Forecast – Sept. 20, 2024 – Morning 3:05 NBC6 First Alert Forecast – Sept. 19, 2024 – Morning 0:52 NBC6 First Alert forecast – Sept. 18, 2024 evening 3:08 NBC6 First Alert Forecast – Sept. 18, 2024 – Morning 0:54 NBC6 First Alert forecast – Sept. 17, 2024 evening