Solar Cycle 24 August Sunspot and Solar Flux data continues to paint a picture of a much less active Sun when compared against the previous Cycle 23.
First, David Hathaway’s September edition of his sunspot predictions. Hathaway has a mid, high and low range chart with the actual data slightly below the mid-range forecast. The Hathaway midrange predicts a maximum monthly high of about 70 Sunspots in early 2013. Cycle 23 experienced a maximum monthly high of about 120 in 2001.
NOAA sunspot prediction chart has only a single line which predicts a maximum monthly of about 90 sunspots. It is shown below:
Solar flux through August appears to be trending below the NOAA prediction for Cycle 24. The NOAA Cycle 24 solar flux prediction is for a peak of 140 in 2013. This contrasts with the Cycle 23 maximum of about 195 in 2002. See the NOAA chart below: