What does the cryptic crossword clue "It could get you drenched? Could possibly! (10)" mean?

The wordplay uses an anagram. CLOUD (synonym="CLOUD") + BURST (synonym="BURST") = CLOUDBURST The answer is CLOUDBURST.

It could get you drenched? Could possibly! (10)

Guardian Cryptic #29617 | 12 Down | 2025-02-13 flower