Become an expert at spotting clouds—in one week

We previously learned about clouds commonly seen on sunny days. Today we’re learning about the cloud cover present on misty or overcast days.  

In Latin, stratus indicates that something is flattened or spread out. 

In places like California, particularly during late spring and early summer, North Pacific high-pressure weather systems can cause warm air to sink, where it traps cooler air over the ocean. The result is an extensive “marine layer” of stratus clouds that extends inland in the morning and generally dissipates by afternoon. 

Think you’ve learned enough to spot a stratus cloud? Put your new knowledge to the test.  

Want to experience more wonder? National Geographic’s Wonder List features playful prompts and activities that turn everyday moments into wonder-filled discoveries—for families, anywhere, every day.