Forecaster delivers ominous warning of 1-in-1,000-year flood coming
"1-in-1,000-year" is metaphor, for the simple reason that records of such things probably only go as far back as 200-300 years.
One of the facts Warmistas and other Chicken Littles try to keep deep in the dark is that actual temperature records only date back 3 or 4 centuries (to when Gabriel Fahrenheit invented a reasonably accurate thermometer), and something close to well distributed worldwide temperature records may only go back a century or even half century. There is a similar time limitation for weather records. Tree rings and such are, at best, imprecise and multivocal proxies.