NLN Aurora Briefs – January 30, 2015

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The predicted increase in solar wind speed that prompted the ongoing G1 Geomagnetic Storm watch has started. Winds speeds are now around 410km/s. Late on the 29th, a period of higher density and negatively tilted Bz increased the KP to 4.33. As wind speeds continue to increase over the next 24 hours, the magnetosphere will be more reactive to small disturbances, and higher KP values are possible. One note: with higher wind speed, there will be less time between detection at the ACE satellite and resulting Aurora on Earth, be prepared for as little as 45 minutes of warning.

Solar activity is increasing as well. There are currently 4 Beta-gamma Active Regions (ARs 2268, 2271, 2275 and 2277). 2268 and 2271 are growing in complexity and spot count – there could be a delta region soon.

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