"The depths of the earth are the Lord's arsenal, whence were drawn weapons to be employed in the destruction of the old world. Waters gushing from the earth united with the waters from heaven to accomplish the work of desolation. Since the Flood, fire as well as water has been God's agent to destroy very wicked cities. These judgments are sent that those who lightly regard God's law and trample upon His authority may be led to tremble before His power and to confess His just sovereignty. As men have beheld burning mountains pouring forth fire and flames and torrents of melted ore, drying up rivers, overwhelming populous cities, and everywhere spreading ruin and desolation, the stoutest heart has been filled with terror and infidels and blasphemers have been constrained to acknowledge the infinite power of God. PP 109.1"
"In the six hundredth year of Noah’s life, in the second month, the seventeenth day of the month, the same day were all the fountains of the great deep broken up, and the windows of heaven were opened."
The EGW passage directly refers to the 'fountains of the great deep' being broken up, which is a key element of the Genesis flood narrative described in Genesis 7:11.
"Said the prophets of old, referring to scenes like these: “Oh that Thou wouldest rend the heavens, that Thou wouldest come down, that the mountains might flow down at Thy presence, as when the melting fire burneth, the fire causeth the waters to boil, to make Thy name known to Thine adversaries, that the nations may tremble at Thy presence! When Thou didst terrible things which we looked not for, Thou camest down, the mountains flowed down at Thy presence.” Isaiah 64:1-3 . “The Lord hath His way in the whirlwind and in the storm, and the clouds are the dust of His feet. He rebuketh the sea, and maketh it dry, and drieth up all the rivers.” Nahum 1:3, 4 . PP 109.2"
"Oh that thou wouldest rend the heavens, that thou wouldest come down, that the mountains might flow down at thy presence,"
EGW directly quotes Isaiah 64:1 to describe God's power and presence.
"Oh that thou wouldest rend the heavens, that thou wouldest come down, that the mountains might flow down at thy presence, As when the melting fire burneth, the fire causeth the waters to boil, to make thy name known to thine adversaries, that the nations may tremble at thy presence! When thou didst terrible things which we looked not for, thou camest down, the mountains flowed down at thy presence."
Ellen White directly references Isaiah 64:1-3 in this passage.
"The Lord is slow to anger, and great in power, and will not at all acquit the wicked: the Lord hath his way in the whirlwind and in the storm, and the clouds are the dust of his feet."
EGW directly quotes Nahum 1:3.