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Ranging from Category 1 to Category 5, this rating system classifies hurricanes by sustained wind speed and potential damage.
The rotation of this massive Atlantic ocean current helps steer hurricanes and keeps Western Europe warmer than other regions at similar latitudes.
These puffy, cotton-like formations are the most recognizable fair-weather clouds, often seen on pleasant summer afternoons.
This instrument contains mercury or alcohol in a glass tube and measures how hot or cold the air is.
Named for its resemblance to a horse's tail, this wispy, high-altitude formation is made entirely of ice crystals.
This rotating column of air extends from a thunderstorm to the ground and can cause catastrophic damage in seconds.
This frozen form of precipitation forms in thunderstorm updrafts and can grow larger than golf balls before falling.
The calm center of a hurricane where skies often clear and winds suddenly drop is called this.