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how likely is an emp attack

An all-out, civilization-ending EMP attack is considered technically possible but strategically very unlikely , while smaller-scale EMP effects (and especially solar storms) are a more realistic concern that governments already factor into planning.

Quick Scoop

1. What an EMP actually is

An EMP (electromagnetic pulse) is a burst of electromagnetic energy that can overload and damage electronics and parts of the power grid.

There are three main kinds people worry about:

  • Nuclear high-altitude EMP (a nuclear weapon detonated high above a region).
  • Non‑nuclear EMP devices (smaller, tactical, shorter-range weapons).
  • Natural “EMP-like” events from the sun (solar storms / coronal mass ejections).

The nightmare scenario you see in fiction is usually the high‑altitude nuclear type that wipes out power and electronics across a huge area.

2. How likely is a man-made EMP attack?

Experts generally rate the probability as low but consequences as high.

Key reasons the likelihood is low:

  • Deterrence and retaliation
    • A large nuclear EMP over a major country would be treated like a nuclear attack, inviting massive retaliation (mutually assured destruction still applies).
* That makes it an extremely risky move for any state actor; they might gain a short-term advantage but almost certainly lose everything afterward.
  • Who could actually do it?
    • Nations such as Russia and China have the tech to launch an EMP-capable nuclear weapon; there are also concerns about Iran and North Korea working on related capabilities.
* But those same states know that using such a weapon against the U.S. or other nuclear powers would likely trigger overwhelming response, so it stays in the “deterrent” and “theoretical threat” category rather than something they’re eager to use.
  • Terror groups and rogue actors
    • They generally lack the combination of long‑range missiles, nuclear weapons, and precise detonation capability needed for a large high‑altitude EMP.
    • Smaller, localized non‑nuclear devices are technically possible but far less dramatic than the “continent-wide blackout” version.

Because of all that, analysts often land on: possible, but not a top‑tier, imminent threat compared with conventional attacks, cyberattacks, or standard nuclear strikes.

3. Natural EMP-like threats (solar storms)

Here’s the twist: a severe solar storm is widely considered more likely than a deliberate EMP attack.

  • Solar coronal mass ejections (CMEs) can induce powerful currents in long power lines and damage transformers and satellites, similar to the “slow” component of a nuclear EMP.
  • Historic examples:
    • The 1859 Carrington Event caused telegraph systems to fail and sparks from equipment.
    • In 2022, a solar event destroyed 38 newly launched Starlink satellites.

Modern grids are more complex and potentially more vulnerable, so space weather is a serious, ongoing concern in engineering and planning.

4. How prepared are governments and militaries?

Governments and militaries don’t treat EMP as science fiction; they treat it as low‑probability, high‑impact risk.

  • United States
    • There’s an Executive Order (13865) directing federal agencies to understand EMP and geomagnetic disturbance (GMD) effects and improve resilience of infrastructure.
* The Department of Homeland Security and other agencies work with utilities and industry on protective measures and response planning.

* Military systems: many strategic assets are hardened to varying degrees, and testing has focused on missiles, command-and-control, and other critical systems.

* A 2016 Government Accountability Office report found gaps, including no comprehensive, department-wide EMP policy and limited testing beyond strategic assets, but it pushed DoD to take the issue more systematically.
  • Bottom line for the military
    • An EMP could disrupt satellites, radios, drones, and unprotected electronics.
* But it is **unlikely to “instantly collapse” the entire U.S. military** , because key systems are hardened, exercises assume degraded environments, and damaged gear can often be repaired or replaced.

5. Why EMP is so popular in forums and YouTube

If you search “how likely is an EMP attack,” you see a lot of dramatic videos and prepping discussions because EMP is a perfect modern apocalypse narrative.

Common themes in forum and prepper circles include:

  • Fear of a single event that “suddenly” ends modern technology and supply chains.
  • Speculation about North Korea, Iran, or “mystery” superweapons.
  • Pushback from more skeptical preppers who argue people over‑focus on EMP instead of more probable disasters like regular blackouts, storms, or economic shocks.

Even some prepping sites that take EMP seriously emphasize that the realistic approach is to treat it as one possible cause of long-term grid failure —not to obsess over science‑fiction-level scenarios.

6. So, how worried should an ordinary person be?

A useful mental model is:

“Focus on what’s plausible and overlapping.”

Whether the cause is an EMP, solar storm, cyberattack, or a plain old storm, the everyday impacts look similar for most people:

  • Power outages (hours to days, in extreme outliers maybe longer).
  • Communication issues.
  • Disrupted services and supply chains.

Instead of trying to prep specifically for a Hollywood EMP, it’s more practical to be ready for any extended outage , for example:

  • Several days of water and shelf-stable food.
  • Some cash on hand, backup light sources, non‑electric cooking options.
  • Copies of important documents and a plan for contacting family if cell networks go down.

These steps help for severe storms, local grid failures, cyber incidents, and also for an EMP scenario, without needing to dive into exotic gear.

Mini TL;DR

  • A massive nuclear EMP attack is technically feasible but strategically very unlikely , because it would count as a nuclear strike and risk catastrophic retaliation.
  • Only a few countries have the capability, and they have strong incentives not to use it against major powers.
  • Severe solar storms are more likely than a deliberate EMP in terms of broad, real-world risk.
  • Governments and militaries do plan for EMP and grid resilience, but experts generally see it as a low‑probability, high‑impact scenario , not a near-certain event.
  • For individuals, it’s more rational to prepare for generic long-term outages than to focus narrowly on “EMP doomsday.”

Information gathered from public forums or data available on the internet and portrayed here.