Finally, some sunspot activity to report -- and not one of those phantom spots that appear one day and vanish the next. Sunspot group 1024 first emerged a week ago on July 3 with a daily sunspot number of 17 and the magnetic signature of a new Solar Cycle 24 spot. Over the next few days, it grew more rapidly and became larger than any sunspot group in the past two years. Today, July 10, it should pass over the Sun's western limb and disappear. Sunspot numbers for July 2-8 were 0, 17, 24, 26, 23, 21 and 18 with a mean of 18.4. The 10.7 cm flux was 66.5, 67.3, 71, 71.6, 68.9, 71.3 and 70.8 with a mean of 69.6. The estimated planetary A indices were 3, 5, 3, 6, 4, 5 and 6 with a mean of 4.6. The estimated mid-latitude A indices were 2, 3, 2, 4, 3, 3 and 3 with a mean of 2.9.
More...
More...