Today event

Today i've a plan to go school (It could be easier to say ' I'm going to school' but if you mean that you usually go to school and it's your daily routine it could be better to say 'Today I go to school'.There are many traffic because of heavy rain . (We use but to link two sentences not really at the begining of a sentence)
Roads are flooded so tommorrow i 'll go. ( We don't usually use 'the' in plural)