I might flip my eggs and bacon over the campfire out here in the Victorian scrub, but while I am doing this, something geophysically more dramatic could occur; a polar shift:
  http://www.shtfplan.com/headline-news/earths-poles-show-signs-of-flipping-widespread-grid-failures-imminent_01312018 
  http://www.dailymail.co.uk/sciencetech/article-5334421/Earths-magnetic-poles-signs-FLIP.html 
  https://undark.org/article/books-alanna-mitchell-spinning-magnet/ 
  https://www.amazon.com/Spinning-Magnet-Electromagnetic-Created-World/dp/110198516X

“Scientists from the University of Colorado in Boulder are sounding the alarm that the Earth’s magnetic poles are showing signs of reversing.  Although the pole reversal, in and of itself, isn’t unprecedented, the solar winds that would take out the power grid and make parts of the globe uninhabitable could cause widespread disasters. The Earth has a fierce molten core that generates a magnetic field capable of defending our planet against devastating solar winds. 

This magnetic field is vital to life on Earth and has weakened by 15 percent over the last 200 years. This protective field acts as a shield against harmful solar radiation and extends thousands of miles into space and its magnetism affects everything from global communication to power grids. Historically, Earth’s North and South magnetic poles have flipped every 200,000 or 300,000 years. However, the last flip was about 780,000 years ago, meaning our planet is well overdue.

The latest satellite data, from the European Space Agency’s Swarm trio which monitors the Earth’s magnetic field, suggest a pole flip may be imminent. The satellites allow researchers to study changes building at the Earth’s core, where the magnetic field is generated. Their observations suggest molten iron and nickel are draining the energy out of the Earth’s core near where the magnetic field is generated. While scientists aren’t sure why exactly this happens, they describe it as a “restless activity” that suggests the magnetic field is preparing to flip.

The signs of the Earth’s poles reversing are also apparent to Daniel Baker, who says this would devastate the power grid. If a switch happens, we would likely be exposed to solar winds capable of punching holes into the ozone layer. In a new report, Baker, who is the director of the Laboratory for Atmospheric and Space Physics at the University of Colorado in Boulder, claims if this reversal happens, it is likely to render some areas of the planet “uninhabitable” by knocking out power grids.”

     Well, that has just got to be bad. I look around me here in the dry scrub and wonder how I will survive without power. Wait, I don’t have any, going to bed with the night, and rising with the sun.
But, I am a bit worried about leaking nukes up north:
  http://www.shtfplan.com/headline-news/concrete-nuclear-dome-is-leaking-radioactive-waste-into-the-ocean_02012018 

“The nuclear waste dome on Runit Island northeast of Australia is leaking. The site is pouring nuclear radioactive waste from 43 tests directly into the ocean. Between 1948 and 1958, the Enewetak Atoll was used by the US government to test 30 megatons of nuclear weapons, which is the equivalent to 2,000 Hiroshima blasts. More than 8,000 people later worked hard to clean up that island, shifting 110,000 cubic yards of radioactive debris into a 30-foot-deep crater, which was later sealed in a concrete dome to prevent contamination. Paul Griego, who took part in the cleanup and blames the radiation for a host of health problems, said the dome was never fit for the purpose of containing radioactive waste. Although the dome is 16 inches thick, and 350 feet across, Griego says it’s nothing more than a “gigantic radioactive toilet.”

“We were given an impossible task – cleaning up the radioactive fallout from 43 nuclear bombs. When I first arrived, the dome’s blast crater was open to the ocean – it continued to be full of sea water even after it was sealed off from the ocean. During my 10-hour work day, I witnessed the water level in the crater rise and lower as the tide came in and out,” says Griego. The dome is now weathered by decades of exposure to winds and rain, and the radioactive material inside. It’s feared that rising seas and storms could see all the radioactive material pour into the ocean.

“No attempt was made to drain the crater or line it before the radioactive waste was dumped into it. The coral that created the island is porous and the shock from numerous nuclear weapon tests had also fractured the coral,” Griego said. “From the first day forward, the water has flowed out of the lagoon with the tide, creating a gigantic radioactive toilet that is flushed about twice each day into the Pacific Ocean.”

     With all of the radioactivity pouring into the Pacific from various leaking nuke sites, we can expect our tins of fish to glow in the dark, which just might solve the first problem of the collapse of the grid due to polar switching. I love being an optimist.

     A bit of a tangent, but this may be relevant in the future:
  http://www.survivopedia.com/survival-defense-when-guns-are-not-allowed/