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Across 4. A severe storm developing over tropical oceans with strong winds of more than 120 km/hr 6. Calm center of a tropical cyclone that develops when central winds reach at least 120 kph 9. A high pressure center with a clockwise flow of air in the northern hemisphere 10. The sound caused by rapid expansion of air along an electrical strike 11. Violent, damaging thunderstorms wind that's concentrated in a local area 12. Band where the strongest winds in a hurricane are concentrated, surrounding the eye (2 Words)

Down 1. A spiral motion of fluid within a limited area, especially a whirling mass of water or air 2. Usually brief, heavy storm that consists of rain, strong winds, lightning, thunder 3. Powerful, self- sustaining thunderstorm characterized by intense, rotating updrafts 5. A low pressure center with a counterclockwise flow of air in the northern hemisphere 7. When hurricane force winds drive a wall of ocean water, causing a great of damage (2 Words) 8. A cyclonic circulation interior to a convective storm causing strong winds downward