During which period is a sea breeze front most suitable for soaring flight?

• A. Morning
• B. Afternoon
• C. Night
• D. Evening

Answer: (B)

The best time to use a sea breeze front for soaring is in the afternoon. As the sun warms the land, the air over the land rises strongly, creating a brisk onshore (sea-to-land) breeze. The leading edge of that onshore flow forms the sea breeze front, where the converging air rises along the front. That convergence line often produces a steady, lift-filled corridor near the coast, and you’ll frequently see cumulus clouds along the front in the afternoon. For a glider, this provides reliable lift and a defined path to follow along the coast.

In the morning the land is just starting to heat, so the sea breeze is weak and lift is less organized. At night the atmosphere becomes stable with little vertical motion, and in the evening the heating fades, weakening the front. So the afternoon offers the strongest, most usable lift from a sea breeze front for soaring.