Geomagnetic Update

The CME from yesterday’s solar flare struck at about 01:00HST, not as strongly as predicted. Right now there is a geomagnetic storm going on, but only at a moderate intensity, Kp=5. It takes something with a Kp>10 before aurora become a likelihood at low latitudes. Expect some nice photos from the folks up north as they get to enjoy the show.

The sunspot responsible for the flare, AR1429, is still there, pointed directly at our Earth. It harbors the energy for more X class flares, stay tuned!

Sun at 304nm
The Sun at 30.4nm (extreme ultraviolet) on 8Mar2012 showing the large sunspot group AR1429 (upper center), image credit NASA/SDO

Author: Andrew

An electrical engineer, amateur astronomer, and diver, living and working on the island of Hawaiʻi.

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