GEOMAGNETIC STORM WATCH (G2): NOAA forecasters say that G1 (minor) to G2-class (moderate) geomagnetic storms are possible on Sept. 4th when a stream of solar wind is expected to hit Earth’s magnetic field. The gaseous material is flowing from a large hole in the sun’s atmosphere:
This is a “coronal hole,” a place where the sun’s magnetic field opens up and allows solar wind to escape from the sun’s corona. It looks dark because glowing-hot plasma that should be there is gone. It’s on its way to Earth.
If the geomagnetic storm materializes as predicted, auroras could be visible in the USA as far south as Idaho and New York (geomagnetic latitude 50 degrees).
Ydun Ritz (2022-09-03)