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Hail vs. Sleet: What's the Difference?

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Read the comparison below, or explore it visually. Create a visual lesson comparing hail and sleet using available credits or plan allowance.

Hail is balls or lumps of layered ice that grow inside thunderstorm clouds, while sleet is small ice pellets formed when raindrops refreeze as they fall through cold air near the ground. Hail often falls in warm seasons from towering storm clouds; sleet is a winter phenomenon. In British usage, sleet instead means a mix of rain and partly melted snow.

At a glance

HailSleet
How it formsIce grows in layers as updrafts recycle itRaindrops or melted snow refreeze while falling
Parent cloudTall thunderstorm (cumulonimbus) cloudsWinter clouds over a layer of cold air
Size5 mm to several centimetres acrossSmall pellets, under 5 mm across
SeasonMostly warm-season thunderstormsWinter, with temperatures near freezing
DamageCan dent cars, smash glass, flatten cropsMakes roads slippery; rarely damages objects

Which should you use?

Hail

Hail is the right term for ice falling from a thunderstorm, such as the spring hailstorms that flatten ripening wheat in Punjab and other parts of north India.

Sleet

Sleet is the right term for small, bouncing ice pellets during a cold winter storm in places like the northern USA, or, in Britain, for a wet rain and snow mix.

Frequently asked questions

Why does hail fall in hot weather?
Hail grows high in a thunderstorm, where temperatures are far below freezing even on a hot day. Strong updrafts keep the stones aloft while supercooled water freezes onto them; once they are too heavy, they fall faster than they can melt.
Why do hailstones have layers?
A hailstone can be carried up and down several times inside the storm. Each pass through different conditions adds a coat of ice, either clear from slowly freezing water or cloudy from quickly frozen droplets with trapped air, building rings like an onion.
What is the difference between sleet and freezing rain?
Both start as rain that falls into cold air near the ground. Sleet freezes into pellets before landing, while freezing rain stays liquid and freezes on contact with cold surfaces, coating roads and power lines in a glaze of ice.