Everyone thinks the Iran threat ended with this week’s peace deal, but a signature doesn’t move nearly half a ton of near weapons-grade uranium still buried in Iranian tunnels. Pair that with a solar storm that could do the same damage on its own, and the window to get serious about EMP preparedness is closing fast.
The good news is that none of this has to catch you flat-footed. Six months is enough time to cover every major vulnerability – if you start now and work through the list methodically.
Understand What You’re Actually Preparing For
Before you spend a dollar or move a single item into a Faraday cage, get the threat picture right. There are three realistic EMP scenarios worth preparing for: a nuclear EMP detonated high above the US, a non-nuclear EMP weapon (NNEMP) deployed against a specific target, and a geomagnetic storm triggered by a solar flare.
- The nuclear scenario is the most catastrophic. A single warhead detonated at altitude could bathe the entire continental US in an electromagnetic pulse powerful enough to fry unprotected electronics from coast to coast.
- NNEMP weapons are tactical – they affect a much smaller radius, usually just a few hundred feet – so your risk depends heavily on what’s near you. If you live within range of an airbase, a power plant, or a major military communications hub, pay attention to that.
- The solar threat is less talked about but just as real. The 1859 Carrington Event is the historical benchmark – a solar storm so powerful that telegraph wires caught fire and the aurora was visible from Cuba. A repeat today would be devastating on a scale most people aren’t willing to imagine.
Keep an eye on the NOAA Space Weather Prediction Center. It’s free, it’s accurate, and a warning of a major solar event could give you hours to act – which might be all you need.
Lock Down Your Electronics Before the Pulse
The defining characteristic of an EMP is that it destroys electronics. Microchips, circuit boards, and anything with digital components are vulnerable. The protection solution is a Faraday cage – a conductive enclosure that blocks the pulse from reaching what’s inside.
But, trust me, you don’t need to spend a lot of money on this. A metal trash can with a tight-fitting lid, lined with cardboard, works, but also an ammo can or a properly sealed steel filing cabinet.
What matters is that the enclosure is fully sealed and that your devices aren’t touching the metal walls directly.
What goes in the cage? Ham radio and handheld VHF radios are your highest priority. Your phone is worth protecting even though cell networks will likely be down for weeks or longer. Tablets, laptops, spare rechargeable batteries, a portable solar charger, and even your spare car keys should all be in there. Your car’s ECU is a vulnerability too – older vehicles with carbureted engines and minimal electronics will outlast modern computerized ones.
Also, start to stock up on analog backups now. Old AM/FM transistor radios have no microprocessors and will survive a pulse. A hand-crank or battery-powered shortwave radio is worth having and printed maps are a must.
Secure Your Water
Water infrastructure is one of the first things that collapses after an EMP. Municipal water systems depend on electric pumps to maintain pressure. Treatment plants depend on computerized systems to keep the water safe to drink. Both go down. Even if water keeps flowing initially, there’s no guarantee it’s being treated, and you wouldn’t be able to tell.
Plan for three months of water storage – two 55-gallon drums per person is the target. That’s a significant footprint but a completely manageable one if you approach it over six months, buying drums and filling them incrementally. Treat stored water with unscented bleach (8 drops per gallon for clear water) and rotate it every six to twelve months.
Filtration and purification are just as important as raw storage. A quality AWG – such as Smart Water Box or WFS – pulls drinking water directly from the atmosphere, which means you’ll have water at all times. Also, make sure you keep purification tablets on hand as a backup.
Know Your Stockpile’s Weakness
Dried beans need 90 minutes of boiling. Wheat berries need grinding before they’re even a meal. Rice is the quickest thing on the list and it still needs sustained heat for 20 minutes. Run that three times a day for a family and your propane situation starts looking very different from what you planned.
That’s where most stockpiles silently fall apart – not on the shelf, but at the fire. An EMP doesn’t just cut the grid, it cuts every resupply chain behind it. What you have on day one is what you have for the duration.
Not many of us have actually sat down and calculated that number. And when you do, it’s shorter than you thought. The scary part isn’t the math – it’s that the solution has been sitting in plain sight for 200 years, and most preppers still don’t have it. It’s all here.
Keep Your Home Livable in Any Season
In most of the US, even homes with natural gas heat often rely on electric igniters and thermostats.
After an EMP, those systems don’t work. If you haven’t planned for non-electric heat, you’re looking at a genuine survival problem within the first 24 to 48 hours of a winter event.
A wood stove is the gold standard – it burns fuel you can source yourself, heats effectively, and can double as a cooking surface. If that’s not feasible in your home, a properly ventilated kerosene heater buys you time while you work out a longer-term solution.
Have enough fuel stockpiled for at least 30 days of heating, more if your winters are harsh.
Insulate aggressively. Heavy curtains or blankets over windows retain an enormous amount of heat. Concentrating your family into one or two rooms rather than heating the whole house stretches your fuel supply. Sleeping bags rated to 20°F or lower, layered bedding, and hot water bottles are low-tech but genuinely effective.
In summer, the calculus is different. Heat is uncomfortable but rarely immediately lethal if you have water and shade. Light-colored roofing and exterior walls reflect heat. Reflective space blankets over south-facing windows work well. Keep everyone hydrated.
Communication Is Gold
After an EMP, whoever can communicate has an advantage that’s hard to overstate. Your cell phone may survive if it’s in a Faraday cage, but the network it depends on won’t be back for weeks, possibly months. That’s the gap most people don’t plan for.
Ham radio is the real answer for long-range communication – with the right antenna, you can reach across states or continents on bands that need no infrastructure to function. A handheld VHF radio covers short-range communication with neighbors or family nearby.
Also, make sure you read this article about 6 Unusual Ways to Communicate After an EMP.
Don’t Let a Power Outage Destroy Your Tools
If your workshop or garage is full of cordless drills, circular saws, and angle grinders, an EMP could render all of it useless.
That’s why it’s better to put your most essential power tools in a Faraday cage. A metal cabinet or a lined ammo can works well for smaller tools and batteries.
Build out your hand tool inventory now. A good set of hand saws, chisels, planes, draw knives, and manual drills costs relatively little at yard sales and estate sales.
They also make exceptional barter items in a long-term grid-down scenario.
Print Everything!
We’ve outsourced our memory to the internet. That’s a serious vulnerability. After an EMP, even if your devices survive, the internet itself could be down for months. Every piece of information you’ve been assuming you can look up needs to exist in physical form before the event, not after.
Build a survival library deliberately. Local and regional road maps, topographic maps of your area, and a printed copy of your most critical contacts and account numbers. Also, make sure you have practical books with plans, DIY projects and recipes, such as No Grid Survival, Bug-In Guide or The Amish Ways. None of this takes more than a few weekends and a modest budget.
One website I came across on a prepper forum changed how I think about EMP prep entirely. Over there you can learn all the risks of EMP and also the exact protocol to follow to save your life, your electronics and your home. Read more on empprotocol.com.
Start the Clock Now
Six months sounds like a long time until you map out everything on this list. Electronics protection, water storage, food systems, heat, tools, paper resources – each category has real costs in time and money.
Work through this checklist one category at a time. Set a monthly budget, even a modest one. Be methodical. The window is open now, but it won’t stay open forever.
Identify your scenario: nuclear EMP, NNEMP, or solar geomagnetic storm
Bookmark NOAA Space Weather Prediction Center — check it regularly
Assess your proximity to military bases, power plants, and major comms hubs
Build a Faraday cage: metal trash can with tight lid, lined with cardboard
Protect ham radio, VHF handhelds, and all spare batteries inside
Store phone, tablet, laptop, and portable solar charger inside
Stock analog backups: AM/FM transistor radio, shortwave
Target two 55-gallon drums per person — 3-month minimum supply
Treat stored water with unscented bleach; rotate every 6–12 months
Acquire an AWG unit (Smart Water Box or WFS)
Keep purification tablets as backup
Audit your stockpile for real cook times — not just calorie counts
Calculate your actual propane runway under daily cooking load
Stock what you can prepare without a functional kitchen
Install a wood stove or ventilated kerosene heater before you need it
Stockpile 30+ days of heating fuel
Add heavy curtains; concentrate family in one or two rooms to stretch fuel
Get sleeping bags rated to 20°F or lower
Get licensed for ham radio — reaches across states with zero infrastructure
Acquire a handheld VHF radio for short-range family and neighbor comms
Store all radios in the Faraday cage until needed
Cage your most essential power tools and batteries before an event, not after
Build out hand tools: saws, chisels, planes, manual drills
Print critical contacts and account numbers — one laminated sheet
Acquire: No Grid Survival, Bug-In Guide, The Amish Ways
Print local, regional, and topographic maps. Assume no internet for months.
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The post The Ultimate EMP Survival Checklist You Need to Build in the Next 6 Months appeared first on Ask a Prepper.
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