Atmosphere Layers
Weather happens in the troposphere — only 12 km thick. Tap any layer to see what flies there.
Cloud Genera
Ten WMO-classified cloud types. Three altitude bands; cumulonimbus spans them all.
Fronts & Pressure Systems
A front is the boundary between two air masses. Cold fronts are aggressive — they wedge under warm air, throwing it up sharply.
Low pressure (cyclone)
Air converges and rises. Northern hemisphere: rotates counter-clockwise. Brings clouds, precipitation, unsettled weather.
High pressure (anticyclone)
Air diverges and sinks. Northern hemisphere: rotates clockwise. Brings clear skies, calm winds, often sunny weather.
Storm Anatomy
Three deep dives — pick one.
Forecast Sandbox
Read the synoptic charts and predict pressure, wind, clouds and precipitation.
Atmospheric Optics
Where light from the sun meets the right atmosphere, you see geometry.
Drill
Cloud ID, fronts, pressure systems, atmosphere layers.
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Daily Challenge
Eight questions. Same set for every user; new at midnight local time.
Today's set
Question 1 / 8