“What if the Earth’s magnetic field flips tomorrow?”
If you read about the sun flipping every cycle, it is not a “flip” per se. It first loses it’s dipolar field strength, goes into chaos, (that’s when the coronal mass ejections peak) and then reorganizes in a reverse polarity.
The earth does the same thing in a polar shift. It is the reason for all the earthquakes and volcanic activity during the reversal. If you want to read a real interesting article, read the NASA one I linked above that shows the field reversal patterns found on both sides of the Mid-Atlantic Ridge. The current bandwidth is greater than normal which suggests we are past due for a change. They used magnetometers from ships, measuring the polarity of the iron ore deposits in the ocean floor. They found that when the molten lava flowed, the deposits aligned with the polarity at that time, and when the lava solidified, it locked the pattern. By measuring the widths of the bands of each polarity field and contrasting it with the rate of movement of the plates, they could tell approximately how many years between polarity reversals.
Same with the onset of the next ice age.
I am somewhat prepared for calamity and working on better preparations (Be Prepared - words to live by as it turns out).
My progeny are well launched and at least knowledgeable about bad things that can happen (even if not well prepared). Working against the current forces of gov't, I work to be as self sufficient as possible and am always learning new skilz.