Avoiding a Storm!

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Across
  1. 4. common storm
  2. 7. ontop/it; hint:rebus
  3. 8. a basement
  4. 10. crashing noise heard after a lightning flash
  5. 11. storm cloud
Down
  1. 1. seek _______!
  2. 2. cover your _____!
  3. 3. a powerful storm found over water
  4. 5. balls of ice that fall from storm clouds
  5. 6. a funnel cloud
  6. 9. electrical storm