I noticed that accuweather measures snow differently to rain. Rain is in mm but snow is in cm - that’s mildly infuriating to me.
Isn’t that just standard convention? Rain is always measured in mm, and snow makes no sense to measure in a unit as small as mm, therefore cm.
May be related to that rain is measured by filling up a measuring cylinder standing around. Doesn’t really work with snow as it takes a bit before it packs nicely.
No, as far as I know the convention is to measure by melted height. Although this may be more useful for actually understand how much snow fell. Measured by molten height, the actual snow is about ten times as deep
Edit: I could be wrong, but this is the way that Yr and SMHI measure things
This is how it always is and has been. One mm of rain is roughly equivalent to one cm of snow.
But snow can have wildly different densities. I find it hard to believe that this is true.
https://en.wikipedia.org/wiki/Digit_(unit)
Britain
Main article: English units of measurement
A digit (lat. digitus, “finger”), when used as a unit of length, is usually a sixteenth of a foot or 3/4" (1.905 cm for the international inch).[6] The width of an adult human male finger tip is indeed about 2 centimetres.
Full standardization on decidigits it is!
It’s called science. The weather office in my country measures the precipitation the same way.
At least it’s all metric so it’s only mildly infuriating and not useless
This is normal.

Guess you don’t see snow very often?
No, not often at all. Sounds like I’m mildly ignorant rather than it being mildlyinfuriating
They also like to downgrade whichever paid version of the app you have every couple of years and introduce a new extra-premium-plus-pro tier. Accurate predictions but scammy bullshitters selling it. Weawow can use same prediction models without rewarding bait-and-switch assholes.
I don’t think they actually do any weather forecasting. Last I heard, all the US weather apps are getting forecasts from the National Weather Service (part of the NOAA). I imagine it’s similar in other countries. Which makes the bait-and-switch that much more infuriating.
Agreed all, I think if snow was inches it would edge it beyond mildly infuriating :)
I’d not considered protocol but did calm down quickly when you appreciate that some places can get a large volume of snow so using a larger scale is reasonable.








