Space Calculators
CME Arrival Time Calculator
Estimate a coronal mass ejection's transit time from the Sun to Earth, based on its launch speed and the real distance of 1 astronomical unit.
☄️ Interplanetary CME Arrival Time Calculator
Calculate estimated solar plasma shockwave travel timelines from the Sun's corona to Earth's magnetosphere boundary.
300 km/s (quiet filament eruption)3,500 km/s (extreme Carrington-class)
Estimated Transit: 1d 17h 33m
(41.6 total hours)
🟡 Risk Profile: Moderate/Severe
Strong magnetospheric compression expected. Global Kp indices could spike to Kp 6-8. Wide radio blackouts possible.
This is a hypothetical calculator based on the speed you set above — not a live tracker of an actual, currently in-progress CME. For real, current solar activity, see our live CME tracker.