STORM WARNING: A CME has just hit Earth's magnetic field (Sept. 7th at
~2300 UT). This is the debris from Wednesday's decade-class X9 solar
flare. It arrived earlier than expected, confirming that the solar
storm cloud is both fast and potent. The CME appears to contain strong
south-pointing magnetic fields that typically do a good job of igniting
geomagnetic storms. High-latitude sky watchers should be alert for
auroras in bright moonlight.
Visit Spaceweather.com for updates and more information about this developing event
Above: An outburst of Northern Lights over Tromso, Norway, on Sept. 5th
(photo credit: Tom Arne Moldenaes). Tonight's display should be even
better as Earth passes through the wake of a potent CME. Monitor the
Realtime Aurora Photo Gallery for sightings.