The Fitzroy Storm Glass is a sealed glass container filled with a liquid which responds to changes in the weather, allowing the observer to forecast the possibility of storms, snow, wind, rain or clear skies.
This specific mixture was developed by Admiral Robert FitzRoy and was used on his voyage with Charles Darwin on the HMS Beagle.
In 1859, violent storms struck the British Isles. In response, the British Crown distributed storm glasses, then known as Fitzroy's Storm Barometers to many small fishing communities around the British Isles that were to be consulted by ships at port before setting sail.
This functional and eye-catching device is not only a great way to predict the weather, but a piece of history anyone would be proud to have in their home. This amazing weather forecasting device is perfect for the budding meteorologist!
- If the liquid in the glass is clear, the weather will be bright and clear.
- If the liquid is cloudy, the weather will be cloudy as well, perhaps with precipitation.
- If there are small dots in the liquid, humid or foggy weather can be expected.
- A cloudy glass with small stars indicates thunderstorms.
- If the liquid contains small stars on sunny winter days, then snow is coming.
- If there are large flakes throughout the liquid, it will be overcast in temperate seasons or snowy in the winter.
- If there are crystals at the bottom, this indicates frost.
- If there are threads near the top, it will be windy.