Sun Spot activity has been pretty mild as of late, however this cool event just happened today. It does not really increase the chances of strong magnetic storms, however, things can happen quickly like this that can generate magnetic storms impacting GNSS signals.
Space Weather News for August 20, 2013
SUNDIVING COMET AND CME: A small comet plunged into the sun this morning. Just before it arrived, the sun expelled a magnificent full-halo CME. Did the comet survive? Find out what happened at http://spaceweather.com.
CHANCE OF STORMS: There is a slight chance of polar geomagnetic storms on Aug. 20-21 when Earth is expected to pass through the wake of a CME that left the sun a few days ago. Geomagnetic storm alerts are available from http://spaceweathertext.com (text) and http://spaceweatherphone.com (voice).