Solar Flare Human Impact Calculator

Estimate how a solar flare and related geomagnetic storm could affect technology, infrastructure, and everyday life based on flare strength and Earth exposure.

Higher flare classes usually mean stronger space weather effects.
Example: X5 means class X with magnitude 5.
Coronal mass ejections often drive the largest geomagnetic impacts.
A direct Earth-facing event is usually much more disruptive.
Better shielding and preparedness reduce human impact.
Higher latitudes often experience stronger geomagnetic effects.
How we calculate

We combine flare class, flare magnitude, CME strength, Earth-facing angle, infrastructure resilience, and latitude exposure into a 0–100 impact score. Stronger solar activity raises the risk of radio blackouts, satellite disruption, navigation errors, and power-grid stress.