ACROSS
4. The flashes of light that are produced in the sky during a storm →  Lightning
5. A small, soft piece of frozen water that falls from the sky as snow →
Snowflake
6. A long period of time during which there is very little or no rain →
Drought
7. A severe snowstorm that goes on for a long time →
Blizzard
8. An extremely large, powerful, and destructive storm with very strong winds that occurs especially in the western part of the Atlantic Ocean →
Hurricane


DOWN
1. Covered with clouds, covered with clouds → Cloudage
2. A stream of liquid in the form of very small drops, a fine spray → Mist
3. A storm with a large amount of falling snow → Snowstorm
7. A gentle wind → Breeze