Disturbing weather could mean "the end" depending on how far into the greenhouse effect we are. If we have set off a runaway greenhouse effect then the end is in sight. The planet will turn violent and heat up enough to kill us all. Earth will get so hot that water will be able to escape the atmosphere and instead of water it will rain sulfer. My astronomy prof last year was talking about this, the theory is earth will slowly adapt an atmosphere like venus, thus we die.
