https://www.solarham.net/AR 3256 produced an X1.2 solar flare at 02:33 UTC early this morning (Mar 29). Coronagraph imagery shows a small coronal mass ejection (CME) leaving the blast site, but so far appears to be off the Sun-Earth line. Other than the brief radio blackout during the flare itself, no major impacts should be expected.
We have now had more of the major X-class solar flares in three months than in the past several years combined. Well more, in fact. Solar peak is here, and this is going to be a big one. Navigation has been disrupted at least once and more likely twice in the past month or so.
The daily notch shown on the NOAA chart is due to the equinox, and some kind of blockage in the data stream for X-ray solar emission which occurs around these two parts of the year. It's not the apocalypse, just bad data. Today's notch blocked part of the data for the usual type of slow decline in emission that we would expect after a major flare.
Various forms of glow in the sky can be expected, though for most you'll have to have a clear night in a relatively unpopulated area to see them. It's not just the aurora. In the past decade or so, much has been written on a number of other moving-charge phenomena that cause glowing in the sky. Off the top of my head, I can think of the equatorial ring current, red sprites (caused by thunderstorms), blue jets (ditto), and a couple more with strange names and stranger causes.