I created this new SFX. It replaces the bclosed.mp3 and the bopen.mp3 effects in the Audio folder to a new one that resembles a National Weather Service alert.
(Before you install backup these 2 files bopen.mp3 and bclosed.mp3 in your "Rockstar Games/Vice Ctiy/Audio" folder.)
Just copy and Paste the 2 mp3 files from the rar file to "c:/Program Files/Rockstar Games/Vice Ctiy/Audio" When asked "Do you want to replace the file(s) bclosed.mp3 and bopen.mp3" Click replace.
Then Start your game. To hear the warnings you need to start a new game. You will hear it shortly after you start the new game. The 2nd warning is part of the way through the game after you unlock the bridges.
Please comment and rate.