Geomagnetic Storm May 2024 Time. Historically, g4 storms are common during a solar cycle, but g5, or extreme geomagnetic storms such the one that occurred on may 10, are incredibly rare, dahl. The disturbance storm time (dst) index is a measure of geomagnetic activity used to assess the severity of geomagnetic storms.

Noaa encourages viewers to watch from a high vantage point, like a hill, while the optimal time to see the aurora borealis is between 10 p.m. Noaa space weather forecasters have observed at least seven coronal mass ejections (cmes) from the sun, with impacts expected to arrive on earth as early as midday friday, may 10, and persist.