Yes, climate change is pretty terrible and the future looks gloomy. Also, I agree that everyone should do some planning and preparation for a disaster.
However, I'm not sure exactly what you're getting at here. Yes, it's terrifying that this particular metric is off the chart. However, what does it actually portend for people reading this post ? In Australia for example El Nino is a period of reduced rainfall. Not drought, just reduced rainfall. Yes sea surface temperatures are correlated with hurricanes but El Nino is an anomaly of sea surface temps in a very specific area of the pacific ocean.
Shit is fucked, but posting a vaguely scary graph and telling people to fill their bath tubs is more likely to build apathy and readiness atrophy than inspire people to build communities.