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Sunspot update: More evidence of an upcoming weak maximum

On July 4th NOAA updated its monthly graph tracking the monthly activity of sunspots on the Sun’s visible hemisphere. Below is that updated graph, annotated by me to show the past and new solar cycle predictions.

June 2020 sunspot activity

The graph above has been modified to show the predictions of the solar science community for both the previous and upcoming solar maximums. The green curves show the community’s two original predictions from April 2007 for the previous maximum, with half the scientists predicting a very strong maximum and half predicting a weak one. The blue curve is their revised May 2009 prediction. The red curve is the new prediction, first posted by NOAA in April 2020.

June saw an uptick of activity since my last update, though that activity remains quite low. We saw two sunspots during the month, both with polarities that link them to the next maximum and thus providing evidence that we will have a maximum in about five or six years. The first of those sunspots was also one of the strongest new cycle sunspots yet seen, and lasted for almost two weeks before it rotated off the visible face of the sun.

The ratio of next cycle sunspots vs sunspots from the past maximum has also been shifting. More and more, the new sunspots belong to the next cycle and less to the last. The ramp up to the next maximum is definitely beginning, though to call it a “ramp up” at this point is a big exaggeration. Sunspot activity remains low, though the last few months have seen some activity, unlike the seven months of nothing seen during the second half of last year.

The upcoming prediction for the next maximum calls for it to be very weak. Interestingly, the activity in June surpassed that prediction. This does not mean that the prediction will be wrong, only that June was more active when compared to the smooth prediction curve. As the cycle unfolds the monthly numbers will fluctuate up and down, as they did last cycle. The question will be whether their overall numbers will match closely with the prediction. In the past cycle actual sunspot activity was consistently below all predictions. It is too soon to say how well the new prediction is doing.


Conscious Choice cover

Now available in hardback and paperback as well as ebook!


From the press release: In this ground-breaking new history of early America, historian Robert Zimmerman not only exposes the lie behind The New York Times 1619 Project that falsely claims slavery is central to the history of the United States, he also provides profound lessons about the nature of human societies, lessons important for Americans today as well as for all future settlers on Mars and elsewhere in space.

Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space, is a riveting page-turning story that documents how slavery slowly became pervasive in the southern British colonies of North America, colonies founded by a people and culture that not only did not allow slavery but in every way were hostile to the practice.  
Conscious Choice does more however. In telling the tragic history of the Virginia colony and the rise of slavery there, Zimmerman lays out the proper path for creating healthy societies in places like the Moon and Mars.


“Zimmerman’s ground-breaking history provides every future generation the basic framework for establishing new societies on other worlds. We would be wise to heed what he says.” —Robert Zubrin, founder of founder of the Mars Society.


All editions are available at Amazon, Barnes & Noble, and all book vendors, with the ebook priced at $5.99 before discount. The ebook can also be purchased direct from my ebook publisher, ebookit, in which case you don't support the big tech companies and I get a bigger cut much sooner.


Autographed printed copies are also available at discount directly from me (hardback $24.95; paperback $14.95; Shipping cost for either: $5.00). Just email me at zimmerman @ nasw dot org.


  • Phill O

    Now, NOAA would say there were sunspots visible 50% of the time. Lying with statistics, IMO. Total sunspot numbers as presented by Bob here, is the best manner of data presentation.

  • Nightfall

    Note, there is no scientific evidence so far that sunspots effect climate. If sunspots effected climate, we would see an 11 year annual effect, when sunspots always decline, and always have. We do not.

    The only time anyone can point to sunspots and climate is during the “little ice age”. During that time, there was periods of low sunspot activity that lasted for many decades. Thus, even if sunspots effect climate, it takes decades, many decades, to do so. The rest of Earths history, there have been longish periods with few sunspots, and no noticeable effect on Earth’s climate.

  • Phill O

    To put the record straight, we have about 400 years of data for sunspots :

    The early data is sporadic and are noted in red. More continuous data is in blue. The link (what ever it may be) is scientific. We have no real data which explains the link. There is a link between the “greeness” of the grass and umbrellas found on buses in England. Current observations may show what the relationship is between the sunspots and climate. Yes, for this to affect climate, it by definition is over decades not an 11 year cycle.

    There have been some who try to relate sunspots before there were observations, but these require assumptions, which tend to have problems. Give me empirical data over models anytime!

  • Phill O

    Here is a new tool by NOAA

    Interesting that they have eliminated data from the grand minimum known as the Maunder Minimum!

  • Phill O

    Also note how the scale is changed each time one looks at a particular data set.

  • Phill O: Um, this is the graph I link to and use every month. I wrote about it extensively earlier this year when they introduced it.

  • Phill O

    When I went on, the scale changed for every time I clicked on an era. If it were all on one scale, it might be much easier to see trends. As it is represented, I get the idea that they do not want people to draw their own conclusions. Might explain why you were fooled for a brief time.

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