🔍 Key Concepts
• Tropical waves in the Northern Hemisphere and which way they normally move across the Atlantic
• The general trade wind direction between the equator and about 30°N
• The difference between ‘nearby’, ‘farther away’, and ‘same position’ over a 12‑hour period at typical wave speeds
💭 Think About
• If a tropical wave is east of you, and the trades are blowing from east to west, how will its position relative to you change over time?
• In 12 hours, would you expect a slow‑moving tropical feature to cover a noticeable distance, or stay almost fixed?
• Think about whether the wave will move closer to your longitude, farther away, or pass to the other side of you.
✅ Before You Answer
• Confirm the typical direction of movement of tropical waves in the Northern Hemisphere Atlantic (with the trades).
• Estimate a reasonable travel distance in 12 hours if the wave moves at, say, 10–20 knots.
• Decide whether, after moving, the wave would be still east of you, directly over you, or to your west.