Solar cycle: Solar cycles 23-24 (June 1, 2020) Historical solar and geomagnetic data charts 1954-2006 (April 5, 2007) Cycle 24-25 progress (June 1, 2020) Noon SDO sunspot count 1K image / 4K (*) Solar cycles 1-24 (June 1, 2020) POES auroral activity level October 2009 - December 2012] The red curve represents the simulated (starting from the beginning of solar cycle 17) and predicted (cycle 25) solar activity. Solar Cycle 25 may have a slow start, but is anticipated to peak with solar maximum occurring between 2023 and 2026, and a sunspot range of 95 to 130. NASA’s forecast for the next solar cycle (25) reveals it will be the weakest of the last 200 years. Because normal Cycle life is nominally 11 years, start of Cycle 25 should be in 2019, The Sunspot number (Wolf number 30 … Thus, it appears that the ISSN is still decreasing, and the next minimum is expected in the near future to occur.
It …
2 and 3 in Usoskin & Mursula 2003). The “official” solar cycle forecast includes the month, year, and intensity of that maximum (peak, average sunspot number). Solar cycle, period of about 11 years in which fluctuations in the number and size of sunspots and solar prominences are repeated. This page features our predictions and forecasts for the Sun. “We expect Solar Cycle 25 will be very similar to Cycle 24: another fairly weak cycle, preceded by a long, deep minimum,” said panel co-chair Lisa Upton, Ph.D., solar physicist with Space Systems Research Corp. Currently, we have Solar Cycle predictions for Solar Cycles 24 and 25 (cycle amplitude and F10.7 flux). Solar Cycle 24 activity has peaked and it is on its way to a minimum. In both plots, the black line represents the monthly averaged data and the purple line represents a 13-month weighted, smoothed version of the monthly averaged data. Image via CESSI . Observed values are initially temporary values that are replaced with the final data once it is available. Then the cycle begins again. The observed and predicted Solar Cycle solar cycle is depicted in Sunspot Number in the top graph and observed and predicted F10.7cm Radio Flux in the bottom graph.
Leading solar and space science experts will convene a meeting in the coming years and attempt to predict solar cycle 25. However: The current cycle 24 (which began in 2008—two years late) has been very strange.
Therefore the field strength is likely to be 40 at the 24/25 solar minimum. This is also supported by independent work in 2015 published in the journal Nature. The consensus: Cycle 25 will be similar in size to cycle 24.