A biblical hint to the ice age?

can this be? if we assume a young earth why would moses moseh tell pharoe "the worst hailstorm that has ever fallen on Egypt, from the day it was founded" in exodus 9:17, if he believed young earth he would simply say: the worst. these added words hint he knew about worse hail and the ice age? so this will be the worst "since it was founded"? can this be a biblical hint to the ice age here?

A biblical hint to the ice age?
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