Forecasts say up to three glancing CME impacts could trigger G1 and possible G2 geomagnetic storms through May 20, boosting aurora chances across parts of the northern U.S.

Northern lights may be visible in several US states tonight as 3 CMEs race toward Earth

Source: space
Source Link: https://www.space.com/stargazing/auroras/northern-lights-may-be-visible-in-several-us-states-may-18-20-as-3-cmes-race-toward-earth