Region 2864, circled here on the sun, could set the stage for more aurora displays on Earth and perhaps a full-fledged geomagnetic storm. When these energized particles interact with the outer reaches of our atmosphere, the aurora borealis (the Northern Lights) and the aurora australis (the Southern Lights) can result. When this happens, the Sun can send streams of energized particles out in all directions. The Sun is the primary cause of “space weather.” At times, the Sun can be thought of as going through a “stormy” period where its surface is more active than normal. If the storm is stronger than expected, the aurora could be visible further south if the storm materializes weaker than expected, the aurora may only be visible in Canada and portions of Alaska in North America.Ĭhart showing NOAA Space Weather Scales for Geomagnetic Storms. While there are fears that a future blast from the sun will disrupt electricity, communication, and internet lines for weeks, this event does not seem to have that type of potential with it.Īt this time, the SWPC believes aurora may be seen as low as New York to Wisconsin to Washington state. Satellite orientation irregularities may occur and increased drag on low-Earth orbit satellites is possible the International Space Station (ISS) could also be impacted. HF (high frequency) radio propagation can fade at higher latitudes,” the SWPC cautions. High-latitude power systems may experience voltage alarms. “Induced currents – power grid fluctuations can occur. The Geomagnetic Storm Watch was issued due to coronal hole high speed stream (CH HSS) effects, although glancing influence from a coronal mass ejection (CME) that left the sun on March 20 could also impact Earth late on March 23.Īccording to the SWPC, this geomagnetic storm could create a few hazards.
#SUN CORONA DENSITY FREE#
Aurora, also known as “Northern Lights”, may also be visible in night skies free of light pollution much more south than they usually appear.
The SWPC also believes G1 / Minor geomagnetic storm conditions will occur on Thursday, March 23, and Saturday, March 25 around the primary impact.Īccording to the SWPC, while the area of primary impact will be poleward of 55 degrees geomagnetic latitude, there can be a variety of impacts to people and systems on Earth and just above it in spacecraft. Impacts from a geomagnetic storm are expected to strike Earth on Thursday and Friday, prompting NOAA’s Space Weather Prediction Center (SWPC) to issue a G2 Geomagnetic Storm Watch for a predicted moderate storm on Friday. An image of the sun captured by the GOES-16 weather satellite shows a coronal hole (black area).
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