CME activity today
Friday, Sep 25, 2026 · data updated · refreshes every 15 minutes
3 CMEs launched from the Sun in the past 48 hours, none currently Earth-directed with a pending arrival. Geomagnetic conditions are calm: Kp 3.7, below storm level.
425 km/s
Solar wind speed at L1
Kp 3.7
Geomagnetic activity
+0.1 nT
IMF Bz (southward = storm fuel)
124
Sunspot number
NOAA flare odds today: 25% chance of an M-class flare, 1% chance of X-class.
1CMEs launched in the past 48 hours
| Launched | Speed | Source region | Earth impact |
|---|---|---|---|
| Sep 24, 14:45 UT ↗ | 493 km/s (slow) | S35W70 | not Earth-directed |
| Sep 24, 09:23 UT ↗ | 618 km/s (common) | — | not Earth-directed |
| Sep 24, 02:53 UT ↗ | 500 km/s (common) | N03W32 | 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.
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.