Knowing how and why storms form, and how to stay safe during them, makes storms less frightening. Disaster Alert! Series Interest Level: 3-6 Reading Level: 6.7 ATOS Book Level: 6.7 AR Interest Level: MG AR Points: 1 AR Quiz: 78662EN Lexile Measure: 1050 Lexile Code: NC (Non-Conforming Text) Guided Reading Level: Q.