You are operating on the Illinois River....

You are operating on the Illinois River....

Question 1 of 2707066636ee928f7522a1c519d96

You are operating on the Illinois River. Which time of day would Heat thunderstorms most likely develop?

Question 1 of 27070

Q

You are operating on the Illinois River. Which time of day would Heat thunderstorms most likely develop?

🔍 Key Concepts

• Heat (air mass) thunderstorms usually form from strong surface heating and abundant low-level moisture • They often occur when the day's heating has had time to build up instability in the lower atmosphere • Consider what part of a hot, humid day typically has the strongest rising air currents from the surface

💭 Think About

• During a hot, humid summer day on an inland river, when has the ground and lower atmosphere usually had the most time to warm up? • Compare the typical weather you feel in the morning, around noon, and later in the day on a very warm, muggy day—when do you most often see pop-up thunderstorms form? • Which option mentions conditions that favor strong upward motion of warm, moist air rather than dry, stable air?

✅ Before You Answer

• Be sure the choice you pick includes both warmth and humidity, not dry air • Think about how long the sun needs to heat the land and lower atmosphere before thunderstorms can build • Eliminate any times of day when surface heating has not yet peaked or when the air is more likely to be stable