Geomagnetic storm

GEOMAGNETIC STORM PREDICTED (G1-CLASS): Earth's crossing of the heliospheric current sheet on Nov. 6th sets the stage for even more action on Nov. 7th. That's when a high-speed solar wind stream is expected to reach our planet. Its source is a large northern hole in the sun's atmosphere:

This is a "coronal hole"--a region where the sun's magnetic field peels back and allows solar wind to escape. NOAA forecasters say there is a 45% chance of G1-class geomagnetic storms on Nov. 7th when the emerging wind reaches Earth. There is a similar chance of storms on Nov. 8th.
This is going to be a high-latitude event. Arctic sky watchers will almost certainly see auroras mixed with moonlight on Nov. 7th and 8th. Faint auroras may be seen as well from the northernmost tier of US states--e.g., Maine, the northern tip of Michigan, and Washington. Free: Aurora Alerts.

Realtime Aurora Photo Gallery

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