The actress, who plays April Scott on the show, explained that the cast and crew have already filmed the natural disaster storyline, which is expected to air on screen later this year.
"I didn't have a big role in the storm sequence, which I was grateful for because it was full-on," Fish told TV Week.
"The few scenes that I did have, we had a huge wind machine and a rain machine - and it looks amazing."
She continued: "I can't wait for the audience to see it. Filming it, you did feel like you were inside a storm."
Home and Away's series producer Cameron Welsh previously confirmed plans for a big disaster storyline in an interview with Digital Spy.
Speaking last month, he commented: "The biggest stunt/disaster storyline that we have ever undertaken is in the final stages of post-production. It's coming very soon…"
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