A powerful solar storm put on an amazing skyward light show across the globe overnight but has caused what appeared to be only minor disruptions to the electric power grid, communications and satellite positioning systems.

The U.S. National Oceanic and Atmospheric Administration said extreme geomagnetic storm conditions continued Saturday, and there were preliminary reports of power grid irregularities, degradation of high-frequency communications and global positioning systems.

But the Federal Emergency Management Agency said that as of midday Saturday morning, no FEMA region had reported any significant impact from the storms.

NOAA predicted that strong flares will continue through at least Sunday, and a spokeswoman said in an email that the agency’s Space Weather Prediction Center had prepared well for the storm.

On Saturday morning, SpaceX’s Starlink satellite internet service said on its website that service had been degraded and its team was investigating. CEO Elon Musk wrote on X overnight that its satellites were “under a lot of pressure, but holding up so far.”