India, April 17 -- Attention skygazers! A powerful geomagnetic storm watch for today (April 16) has been placed by the National Oceanic and Atmospheric Administration (NOAA). Rated as a G3, it is expected to bring vibrant northern lights across several US states and Canada.

The NOAA initially placed a G3 watch for April 16 on Tuesday after a coronal mass ejection (CME) from the sun on April 13. However, the government agency said in a post shared on X Wednesday that the watch for the "strong" geomagnetic storm will now stay in place through April 17 as a CME continues to pass over Earth.

The agency forecasts the Kp index, a measure of geomagnetic activity, to peak at 5.33 over the next 24 hours, per Space.com. This heightened activity i...