The first time Brother Branham mentioned earthquakes was around 1935, when he said the time would come when the ocean/sea would weep its way into the desert. In 1958 (and other times), he speaks about the ocean weeping its way into the desert.
Then after the prophecy was given on April 29, 1965, concerning Los Angeles sinking to the bottom of the sea, Brother Branham referred back to this prophecy made in 1935.
In 1951, as Brother Branham spoke to the congregation in the Calvary Temple in Los Angeles, California, he warned that judgment was approaching and that it probably would strike right there first.
In 1954, as he preached in the Lane Tech High School in Chicago, Illinois, he warned that when a person spurns the God’s mercy, the only thing that is left is judgment. Then later in the sermon, he spoke about the Puget Sound area having experienced "tidal waves."
In April 1957, Brother Branham and his wife were in an earthquake in California. He again gave a warning.
In May 1962, Brother Branham again warned America.
In 1964, Brother Branham was hunting at Sunset/Klondyke, the whirlwind descended three times, and the Lord told him: “Judgment---Striking---West Coast.” 

California earthquake prophecy

A matter of days after this, on Good Friday, March 28, 1964, an earthquake hit Prince William Sound, Alaska. The earthquake had a 9.2 moment magnitude, and the duration was about 4 minutes. It was felt over a large area of Alaska and in parts of western Yukon Territory and British Columbia, Canada. To date, this is the largest earthquake to hit North America and it is the second largest quake recorded by the USGS.