Letter Re: Sunspot 11476 Update
Hi James, At about 12:30 UTC this morning Sunspot 11476 flared at the M4.7 level thereafter remaining at an elevated emission state. As of just a few minutes ago it re-flared, peaking to M1.8. Last night’s read at Solen.info gave the area as 1100 SM and noted significant complexity at at least two points within the spot. This morning’s HMIB from NASA’s Solar Dynamics Observatory (SDO) platform has in the leading spot a section in which very high positive and negative magnetic gradients are immediately adjacent to each other with strong intermixing occurring. This is almost always a sign that …