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xts ,

lol didn’t parts of California flood last year/earlier this year? Why even bother calling them “10-year floods” when we can expect them annually or even more frequently

pan_troglodytes ,

the water table down there could use a few more “10 year” floods.

foggy ,

We’re going to have to stop calling these floods out for how infrequent they "used* to be.

That’s like saying something is on sale for 10% off all the time. It’s not on sale, it’s just the price.

Vermont has had 2 “100 year flood” events in the last 15 years.

MrNesser ,

I vote they be called hyperactive water events

Ejh3k ,

I could get behind excessive water events.

WhatAmLemmy ,

Grade them like earthquakes or hurricanes, based on the amount of energy &/or water released.

antlion ,
@antlion@lemmy.dbzer0.com avatar

That’s the way it’s going but it will take some time before it’s mainstream.

usgs.gov/…/atmospheric-river-rating-system-chart

cw3e.ucsd.edu/arscale/

antlion ,
@antlion@lemmy.dbzer0.com avatar

A 100 year flood just means a 1% chance, or, in the 99th percentile of intensity.

Say we had a coin toss, that’s the 2-year storm. You could easily get 2 or three of those in a row.

But you’re correct that the climate is changing, and in many cases the statistics are not applicable to the current climate.

Immersive_Matthew ,

So Vancouver surely is even more likely to get hit hard if Seattle is?

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