In accordance with the Forum Rules please search before posting as this has been requested before. Details for how best to search this forum are covered in this sticky note at the top of this forum. A simple search for the word "flood" would have found the link below.
FLOOD in South Hemisphere countries are as important as SNOW in Northern Hemisphere countries. It would be great to have specific alert for "small", "moderate" and "blocked/headvy" levels of flood due heavy rain.