AuroraWatchers

Tracking Northern Lights…

Alerts, monitoring and tips for catching the aurora — from the same team as Noorderlichtjagers.

Live from the catalog

CME summary

Which cloud to watch, the Kp those arrivals may drive, and density maps of storms still in transit.

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Watch this CME

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Kp prediction Kp from the HUXt solar-wind speed at Earth in 3-hour UT slots for the next 3 days (and recent hits). Solid bars use NASA WSA-ENLIL Kp90 when a matching CME run arrives; hatched bars are speed-only from HUXt streams and CMEs. Each slot carries the ambient Parker spiral, or a Lundquist CME flux rope while a cone is over Earth (cycle-25 Hale handedness and tilt, assumed; the most southward Bz in the slot). The wind speed includes the radial magnetic force of that field, capped so it cannot dominate the flow. Speed Kp is still (V−330)/80.

On the way to Earth

NASA’s latest WSA-ENLIL density map, next to our daily HUXt run of the current cones.

NASA density map DONKI

Horizontal field Lofoten and Veluwe on one chart, each as change from its own 24-hour mean, so a wiggle of the same size is the same number of nT. Full magnetometer

Full CME overview How the detector works How HUXt works Veluwe magnetometer noorderlichtjagers.nl