Tuesday, Sept. 15 is the likely arrival window for a corotating interaction region ahead of a high-speed solar wind stream, bringing active to minor G1 geomagnetic storm conditions.
The disturbance is tied to a coronal hole now facing Earth from the Sun's northern hemisphere, which is expected to lift solar wind speeds and interplanetary magnetic field strength.
A second coronal hole on the Sun's southern hemisphere appears too far south to significantly affect near-Earth space weather.
Solar flare risk remains low in the next 24 hours, with no noteworthy sunspot regions facing Earth and the last G1 geomagnetic storm recorded on Sept. 8.