Published on Nov 19, 2018
A minor stream of solar wind is brushing against Earth's magnetic field today, Nov. 19th, but so far it is doing little to cause geomagnetic activity. Another similar stream is following behind it and could arrive on Nov. 22nd. Either stream could spark Arctic auroras before Thanksgiving http://spaceweather.com/ A SUNSPOT FROM THE NEXT SOLAR CYCLE: Over the weekend, a small sunspot materialized, then, hours later, vanished again. Such an occurrence is hardly unusual during solar minimum when sunspots are naturally small and short-lived. However, this ephemeral sunspot was noteworthy because its magnetic field was reversed. Sunspot AR2727 is a member of decaying Solar Cycle 24. Compare its magnetic polarity to that of the other, unnumbered sunspot. They are opposite. According to Hale's Law, this means they are from different solar cycles. The brief weekend sunspot appears to be a harbinger of Solar Cycle 25. This marks the second such region in the northern hemisphere in as many weeks. A very small spot that formed on November 9th also had the correct Cycle 25 configuration. Solar cycles always mix together at their boundaries. Ephemeral sunspots from Sunspot 25 have already been reported on April 8, 2018 and August 29, 2018. Now add Nov. 17, 2018 to list. The slow transition between Solar Cycle 24 and Solar Cycle 25 appears to be underway. http://spaceweather.com/ http://www.solarham.net/ https://sdo.gsfc.nasa.gov/ HALE'S SUNSPOT POLARITY LAW https://www2.hao.ucar.edu/Education/S...