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Everyday skies · genus

Stratus

The sky pulls up a blanket

Spot it

A low, comparatively featureless grey layer.

How it forms

Moist air becomes saturated in a shallow, stable layer.

Read the sky

It can bring drizzle; a grey sky does not always mean heavy rain.

Where to look

Look in cool, moist lowlands and coastal air.

Little sky facts

  • Reveal fact 1

    Stratus spreads into a layer rather than separate heaps.

  • Reveal fact 2

    Its base can look surprisingly uniform.

  • Reveal fact 3

    It can produce drizzle.

  • Reveal fact 4

    Thin stratus may let the Sun’s outline show through.

Try this

Find a break in the blanket and draw its shape.

Draw your own cloud ↗

Read a little deeper

WMO International Cloud Atlas

Met Office · formation and weather

Conditions described here are places to look, not a global frequency ranking. Use local weather forecasts and warnings for decisions. Never look directly at the Sun.

Next sky story: Stratocumulus →