2012-03-13

A parting blow?

After giving us days of enjoyment, sunspot 1429 is departing our view and left us with another large flare. As this spot weakens (its magnetic fields are unravelling) it released a large M7.9 flare that resulted in a proton storm around Earth. Now these have no affect on aurora but they can cause some polar flights to divert due to increased radiation levels and cause disruption to high latitude HF radio communications. My solar flare monitor picked up this flare as shown below.

Dave Gradwell

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