Solar wind pushed geomagnetic indicators higher last week (on February 1-2), and average planetary A index rose from 7 (for the seven days ending January 30) to 11.6 on January 31 through February 6.
When geomagnetic conditions are active, we usually see higher indices at high latitudes. Alaska’s college A index (measured at a magnetometer near Fairbanks) was 40 on February 1, indicating disturb...
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When geomagnetic conditions are active, we usually see higher indices at high latitudes. Alaska’s college A index (measured at a magnetometer near Fairbanks) was 40 on February 1, indicating disturb...
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