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The Sun emits an intense X-class solar flare, triggering radio blackouts on Earth

Updated: Jul 7, 2023

By: April Carson

A colossal sunspot, rapidly expanding on the sun's surface, has unleashed a formidable X-class flare - the utmost potent type of solar flare that our star can generate. This solar storm impacted our planet, causing momentary radio disruptions in certain regions of the U.S. and beyond. However, experts cautioned that the situation could have been far more severe.

Fortunately, the Earth's atmosphere and magnetic field shield us from the bulk of solar flares. These protective layers act as a filter, blocking most of the severe radiation and allowing only a small fraction to reach our planet.

On June 27, a massive dark patch known as AR3354 appeared on the surface of the sun. Within just 48 hours, it expanded to cover an astonishing area of approximately 1.35 billion square miles (3.5 billion square kilometers) — an expanse ten times wider than Earth itself. The rapid emergence of this colossal sunspot alarmed space weather scientists, who feared the potential for a series of hazardous solar storms that could have far-reaching consequences.

Once it reached its full size, the sunspot unleashed a significant M-class flare on June 29. However, it remained tranquil until July 2, when it emitted an X-class flare directly targeting our planet. This outburst caused a surge in solar radiation that triggered radio blackouts and disruptions to GPS and shortwave radio communications.

Fortunately, the X-class flare was not as powerful as it could have been. Scientists believe that had the event occurred a couple of weeks earlier, when AR3354 was at its most expansive, it would have been much more damaging.

Earth was bombarded by intense radiation from a massive X-class flare, causing the magnetic field to interact with the upper atmosphere and transform the gas molecules into dense plasma. Consequently, radio signals were disrupted, leading to blackouts in the western United States and parts of the eastern Pacific Ocean, as reported by the National Oceanic and Atmospheric Administration (NOAA).

The disruption lasted for approximately 30 minutes, but the situation could have been far more severe. Initially, researchers suspected that the flare had the potential to launch a coronal mass ejection (CME) — a powerful cloud of magnetized plasma. If a CME of this magnitude were to impact Earth, it would undoubtedly result in significant disturbances to our planet's magnetic field, commonly known as a geomagnetic storm.

The potential consequences were dire—a massive radio blackout that could have engulfed up to half of the planet, wreaking havoc on satellites in orbit and disrupting power infrastructure on the Earth's surface. However, fortune was on our side, as no coronal mass ejection was unleashed.

A3354 has not reduced in size yet and may still have the capacity to produce additional M-class and X-class flares in the upcoming days. These flares have the potential to release coronal mass ejections (CMEs) towards Earth. Space weather scientists are continuing to monitor the situation closely and will provide updates as they become available.

In light of this event, it is important to remember that while the sun's activity can cause significant disruptions here on Earth, its energy also provides us with life-sustaining warmth and illumination. We owe much of our planet's habitability to the star we orbit. Without it, life on Earth would be impossible.

Sunspots grow in size and frequency as the sun approaches its solar maximum, the peak of its approximately 11-year cycle. This highly active phase also brings about a surge in the occurrence and intensity of solar flares.

The present solar cycle commenced in December 2019, with predictions from scientists indicating a less impressive peak in 2025 compared to previous solar cycles. However, recent reports from Live Science suggest that the impending solar maximum may arrive earlier than anticipated, boasting a more robust climax. This latest solar flare serves as a compelling indication that the solar peak is rapidly approaching.

A3354, the largest sunspot region to emerge this year and the second-largest of this solar cycle, is captivating in its magnitude. Surprisingly, the total number of sunspots is increasing at a faster pace than anticipated. Over the past 28 months, there have consistently been more of these enigmatic dark patches on the sun than even the most knowledgeable experts had predicted, as per NOAA.

The X-class flare that impacted Earth is the ninth occurrence of its kind this year. Remarkably, this number matches the combined total of X-class flares in both 2021 and 2022. In January, a surprising X-class flare erupted from a concealed sunspot on the sun's far side, narrowly avoiding Earth. Then, in February, another X-class flare emerged alongside a plasma shockwave appropriately called a "solar tsunami," striking our planet and causing radio blackouts.

The sun is known for its erratic and unpredictable behavior, and this latest X-class flare serves as a vivid reminder of the space weather events that are capable of impacting our planet. We must be prepared for similar events in the future, and rely on researchers to monitor the situation closely.

As the sun continues to intensify and approach its solar maximum, the frequency of solar flares is likely to swell. One can never predict precisely when a substantial flare will unleash powerful radiation towards Earth or what kind of effects it will have on our planet's magnetic field. Space weather scientists must remain vigilant in order to adequately prepare us for potential future events.

This event reminds us of the immense power of our sun and its influence on our planet. It is essential to stay informed about space weather through reputable sources and keep an eye out for any warnings that NOAA might issue, as large solar flares such as this one can have a profound impact on life here on Earth.

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April Carson is the daughter of Billy Carson. She received her bachelor's degree in Social Sciences from Jacksonville University, where she was also on the Women's Basketball team. She now has a successful clothing company that specializes in organic baby clothes and other items. Take a look at their most popular fall fashions on

To read more of April's blogs, check out her website! She publishes new blogs on a daily basis, including the most helpful mommy advice and baby care tips! Follow on IG @bossbabymav



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