CME activity today
Tuesday, Aug 11, 2026 · data updated · refreshes every 15 minutes
An Earth-directed CME is inbound: launched Aug 8, 03:23 UT at 574 km/s, estimated to arrive Aug 11, 16:58 UT. Geomagnetic conditions are calm: Kp 0.7, below storm level.
356 km/s
Solar wind speed at L1
Kp 0.7
Geomagnetic activity
+1.4 nT
IMF Bz (southward = storm fuel)
55
Sunspot number
NOAA flare odds today: 0% chance of an M-class flare, 0% chance of X-class.
1CMEs launched in the past 48 hours
| Launched | Speed | Source region | Earth impact |
|---|---|---|---|
| Aug 10, 13:25 UT | 417 km/s (slow) | N14W102 | not Earth-directed |
| Aug 10, 05:24 UT | 264 km/s (slow) | N10W130 | not Earth-directed |
| Aug 10, 01:48 UT | 601 km/s (common) | — | not Earth-directed |
Every CME above is plotted on the live map — open it to watch them move outward in real time, or filter out the slow ones.
⤳ A coronal-hole high-speed stream is forecast to return around Aug 19 (27-day solar rotation), est. ~679 km/s.
2What to do with this
- Watching for aurora? The aurora tonight page turns these numbers into a where-can-I-see-it answer.
- New to CMEs? Start with what a coronal mass ejection actually is.
- Want the alert instead of checking? The tracker has a free mailing list — storm alerts only, no noise.