Across 3. sharp change in pressure moving through the air (2 Words) 5. heavy rain, possibly hail, lightning, and thunder 6. second stage of a thunderstorm, clouds turn grey, rain starts, updraft and downdraft are present 10. a windstorm, also a rapidly rotating vortex of air 15. a loud rumbling or crashing noise following lightning; expansion of rapidly heating air 16. subatomic particle with a negative charge 17. Rating system used to decide how severe/damaging a tornado is (3 Words)

Down 1. sudden giving off of energy 2. US government agency that provides weather forecasts and severe storm warnings (3 Words) 3. the acoustic wave heard in a thunderstorm, caused by the discharge of electricity in lightning (2 Words) 4. subatomic particle with a positive charge 7. moving unsteadily or violently 8. a stair shaped column of charges that zig zags its way to the ground in a thunderstorm (2 Words) 9. third stage of a thunderstorm, updraft weakens, rain lessens and dies out 11. geographic region of the United States where tornados are most likely to occur (2 Words) 12. first stage of a thunderstorm, warm air rises, building fluffy clouds 13. natural electrical discharge from cloud to ground, accompanied by a bright flash 14. funnel like shape of the cloud of wind formed in a tornado