Listen forWeather
Why fresh snow makes everything so quiet
When: December to March
The hush after a snowfall is not in your head. Fresh snow is mostly air, and all that trapped space swallows sound instead of bouncing it back the way pavement and frozen ground do.
Why this time of year
It only works while the snow is fresh and dry. Once it packs down, melts and refreezes, the surface goes hard and starts reflecting sound again, so the quiet is a window rather than a season.
How to notice it
- Go out during or just after a snowfall and stand still for a full minute. That is the whole thing.
- Listen for what is MISSING: traffic hum, the far-off road, the neighbour's door.
- Come back to the same spot a few days later after it has packed and refrozen, and hear the noise return.
- Powdery snow gives the strongest effect. Wet, heavy snow much less so.
Try this with kids: Stand outside and count how many sounds you can hear. Try again in a week when the snow is old.
porous just means full of tiny air spaces, which is what makes snow behave like a sponge for sound
Sources
- reconnectwithnature.orgForest preserve district explainer quoting an acoustics professor: snow is porous and porous materials such as fibers and foams absorb sound well; unlike hard surfaces such as pavement, buildings or frozen ground which reflect sound waves, the porous structure of snow traps and scatters them; freshly fallen dry snow absorbs most, while wet or compacted snow reflects more and the effect fades
In the guide for December, January, February, March