The first angel sounded: And hail and fire followed, mingled with blood, and they were thrown to the earth. And a third of the trees were burned up, and all green grass was burned up. (Rev 8:7 NKJ)
“Behold, tomorrow about this time I will cause very heavy hail to rain down, such as has not been in Egypt since its founding until now. “Therefore send now and gather your livestock and all that you have in the field, for the hail shall come down on every man and every animal which is found in the field and is not brought home; and they shall die.”‘” (Exo 9:18-19 NKJ)
`Thus says the LORD: “By this you shall know that I am the LORD. Behold, I will strike the waters which are in the river with the rod that is in my hand, and they shall be turned to blood. (Exo 7:17 NKJ)
The first trumpet blows and the angels are loosed on the earth. Judgement, yes, but also redemption. John’s readers would have recognized the two elements of hail and blood from the Exodus narrative. The devouring of pasture land by fire would have brought fear to the people as it does today, how can this be redemptive? The fact that there was still two-thirds left.
Today we attribute natural disasters to climate or the environment, but perhaps God is trying to get people attention.