The successive trumpet blasts by each of the first four angels resulted in great catastrophes on the earth and in the sky.

Revelation 8:6-12

6 The seven angels, each of which had one of the seven trumpets, prepared to blow them. 7 When the first angel blew his trumpet, hail and fire mixed with blood poured down onto the earth. As a result, a third of everything on the surface of the land was burned up {the fire burned up a third of everything on the surface of the land}. A third of the trees were also burned up {It also burned up a third of the trees}, and a third of all the green grass was burned up. 8 When the second angel blew his trumpet, something that was like a huge burning mountain fell into the ocean. As a result, a third of the ocean became red like [MTY] blood, 9 a third of the living creatures in the ocean died, and a third of the ships in the ocean were destroyed. 10 When the third angel blew his trumpet, a huge star, which was burning like a torch, fell from the sky into a third of the rivers and into a third of the springs. 11 The name of the star is Bitterness. As a result, the water in a third of the rivers and springs became bitter, and many people died from drinking the water because it had become bitter. 12 When the fourth angel blew his trumpet, God struck the sun, the moon, and the stars, so that they lost a third of their light. The sun also did not shine during a third of the day, and the moon and stars did not shine during a third of the night.