Minor to moderate geomagnetic storms are possible beginning Aug. 17th
GEOMAGNETIC STORM WATCH (UPDATED): Minor to moderate geomagnetic storms are possible midday (UT) on Aug. 17th when a CME is expected to sideswipe Earth's magnetic field. The storm cloud was launched earlier today by a "dark plasma explosion" around sunspot AR3076, described below. A high-speed stream of solar wind arriving on the heels of the CME could extend geomagnetic storming through Aug. 18th.
DARK PLASMA EXPLOSION ON THE SUN: Yesterday, the sun hurled a plume of dark plasma into space following a dramatic explosion around sunspot AR3076. NASA's Solar Dynamics Observatory recorded the blast, which began on Aug. 14th around 1130 UT.
Traveling faster than 600 km/s (1.3 million mph), the plume tore through the sun's outer atmosphere, creating a coronal mass ejection (CME). Newly updated images from the Solar and Heliospheric Observatory (SOHO) confirm that the CME has an Earth-directed component. It could sideswipe Earth's magnetic field on Aug. 17th, producing minor to moderate geomagnetic storms.
https://spaceweather.com/archive.php?view=1&day=14&month=08&year=2022
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