What drove Auckland's deluge?

- La Niña (northerly low, blocking high)
- Precipitable water values above the 90th percentile
- Saturation through the atmospheric column
- Low level jet, convergence & convection
- Marine heatwave

All on the backdrop of a warming climate. pic.twitter.com/e4dziDQPoN

— Ben Noll (@BenNollWeather) January 27, 2023