How to read the Stormglass

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The following crystal formations indicate the type of weather to be expected:

Closeup of a stormglass showing several ferns, indicating wind
Crystals Weather
Clear liquid Fine
Ferns Wind
Small dots Damp, fog
Large flakes Overcast
Milky appearance Rain
Ferns, stars in motion Thunderstorms
Small clusters at the bottom Frost
Stars on bright winter days Snow

With the Stormglass properly placed, crystals will grow in response to the coming weather. The stronger the coming weather, the longer the delay will be between the crystals forming and the weather appearing. The average length of this delay is around two days.

Initially, it may be easier just to see what grows and then remember the weather that follows. When these crystals appear again, you will have some idea of the type of weather approaching.

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