Why raindrops rarely exceed a few millimeters in diameter
In short: While we often imagine massive boulders of water falling from the sky, physics imposes a strict ceiling on how large a raindrop can actually become.
Precipitation typically starts as minuscule cloud particles with a diameter under 0.1 mm. As they fall and collide, they grow into larger drops associated with heavy rainfall. However, researchers generally believe that collisions among drops and surface instabilities impose a natural size limit of about 6 mm.
Exceptions to this rule are rare but documented; for instance, drops as large as 8 mm have been reported in shallow warm showers in Hawaii. Because radar reflectivity is roughly proportional to the square of a drop's volume, meteorologists must account for these varying sizes to estimate total rainfall accurately.
Opens the Intellect+ feed with this card first. Swipe up for the next one.
Sources
- Summary by Intellect · source: What is the Largest Raindrop Possible?
- Also: How big can a raindrop get? | NASA Global Precipitation Measurement Mission
To cite this card, link to https://intellectplus.co.uk/app/ideas-what-is-the-largest-raindrop-possible.
How we source, check and correct cards: Editorial standards.
General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.
Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?
