That’s according to the National Oceanic Atmospheric Administration, which said pilots reported radio interference across the United States between noon and 2PM ET on December 14th. The current solar cycle is stronger than expected, making disruptions like this more likely, but the NOAA forecasts an October 2024 peak, a year earlier than originally predicted. Anyway, here’s a NASA GIF of the eruption.
Heliophysicst here. This is not true. The flare that hit Earth on December 14th was an X-2.6 flare. While this is a large flare and the largest of the current solar maximum, it is nowhere near the largest ever recorded. The largest was on November 4th, 2003 (referred to as part of the Halloween storms), which was so strong it actually saturated the detectors. It was measured at an X-28, which is more than two orders of magnitude larger than Thursdays, but was estimated to be much larger than that.
Thank you! Do we have an estimate of what the Carrington Event might have been? Obviously they didn’t have the same detectors in 1859.
Good question! Scientists have estimated the solar flare that occurred prior to the Carrington event might have at around an X-45 (Elvidge et al, 2018). I believe that this was the first flare ever recorded, but as you mentioned, we obviously we didn’t have modern detectors back then for measurement.
Hey I have a solar flare/CME question that I have always wanted to know. What is the largest flare possible? And what would happen if the earth caught the full force of it? I have read about the Carrington Event and I assume that it would be worse than that.
How close would the flare come to earth? As in the light/plasmas emissions. Opposed to the partial emissions or is that a dumb distinction.
Thank you.
The theoretical limit for a solar flare is very high. These are called super flares. However, they are exceptionally rare and tend to occur in younger, larger stars than our sun. That said, it isn’t impossible for one to occur, and if a massive flare were to occur, the flare wouldn’t be the worst part. Simply put, a solar flare is magnetic energy being launched from the surface of the sun in the form of photons or particles of light. While this would create radio blackouts, satellite drag, and phenomenal aurora, it wouldn’t have a significant impact on Earth’s surface (except for the satellite issues). The real danger is the coronal mass ejection that would follow. A coronal mass ejection is protons, neutrons, alpha particles, and electrons being launched at insane speeds off the Sun’s surface. Because these particles are charged, they can impact our electric grid. And in an extreme case could, in theory, destroy it through massive electrical ground level enhancements. These enhancements would primary occur at higher latitudes because the charged particles would follow Earth’s magnetic field lines toward the poles, but could easily disrupt electric grids northward/southward of 30 degrees. That would mean most of Europe, America, much of Asia, Australia, half of South America and Africa all without power. Obvious chaos would ensue. The good news is governments are aware of this risk and have begun taking preventive mechanisms to prevent such a catastrophic failure. The other piece of good news is this type of event is very rare. The likelihood of it happening in anyone’s given lifetime is extremely low.
Thank you so much.
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I recall the Halloween ones. I was out with my brother and friends walking around on a spooky wooded sled hill out in rural Michigan and we had full on red auroras. Very uncommon to see them at all in that region, and when we did they were faint green or white at best.