There's nothing to suggest these are part of the tribulation. While weather and natural phenomenon will be part of the tribulation i believe it is more revolving around humanity's choices. The world is clearly moving in that direction, but we haven't quite arrived yet.
People seem to enjoy turning natural events into spiritual ones, despite there being no biblical evidence to support it. We had the blood moons. All sorts of gloom and doom predictions. Nothing happened. Such behavior has been going on long before you, or even i, were born. It's a wonderful tool of satan, to have ever spiritual nutjob spouting 'the end is near' whenever there is a catastrophic even, or even an unusual one. Makes us look less and less credible, so that when it is Real no one will listen.
But the truth is worse events have taken place in history. They were not indicators of anything spiritual.