LEARN / THE RISKS
Think in systems. Prepare at home.
Space weather can affect the infrastructure we rely on. Its local effects depend on the event, the equipment, and the response.
Electric Grid
Geomagnetically induced currents can stress transformers and disrupt power. Severity and restoration time depend on the storm, grid design and damage; no single duration or cost applies to every event.
GPS & Satellites
Geomagnetic storms can disrupt GPS and increase drag on low-Earth-orbit satellites. Effects vary with the storm, orbit and system resilience; satellite loss is not inevitable.
Communications
Space weather can disrupt HF radio, satellite links and GPS. Cell and internet continuity also depends on power, backup systems and network resilience.
Water & Fuel
Power outages can disrupt pumping, payment systems and refrigeration. Impacts depend on local infrastructure and backup power; keep safe water and shelf-stable food.
FROM HISTORY, WITH CONTEXT
Three events worth understanding.
1859 — The Carrington Event
A benchmark historical geomagnetic storm that disrupted telegraph systems and produced unusually widespread aurora.
Québec blackout, 1989
On March 13, 1989, a geomagnetic storm triggered a major Hydro-Québec blackout affecting about six million people. Restoration took more than nine hours. Hydro-Québec’s account.
G5 — Gannon Storm, 2024
A G5 storm disrupted satellite navigation used in precision agriculture. Economic loss figures are modeled estimates, not a single confirmed total. Read the Gannon Storm guide and its source notes.
IF CONDITIONS CHANGE
A practical sequence.
Forecast: prepare early
Use official space-weather and emergency information to top off supplies, review your plan, and check backup power and communications.
Warning: follow official guidance
Follow instructions from your utility, emergency managers, and trusted agencies. Follow local officials for any local travel or safety advisories.
During disruption
Expect possible power, communications, and navigation disruptions. Follow your utility and local officials; disconnect nonessential appliances during an outage when safe. Do not interrupt essential medical equipment without its prescribed backup plan.
Restoration varies
Recovery depends on the event, local infrastructure and damage. Build supplies gradually and adapt your plan to local guidance and household needs. A two-week planning goal is not a forecast of outage duration or a guarantee that every need will be covered.