Solar activity

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Glancing blow CME possible on November 1

A Coronal Mass Ejection (CME) produced by a C4.3 flare at 06:16 UTC on October 27, 2020, was analyzed by the SWPC and determined to be a possible glancing blow on November 1. The source of the flare was a large AR 2778 which produced multiple B- and C-class flares...

October 28, 2020

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Glancing-blow expected after weak B1.2 solar flare

A weak solar flare measuring B1.2 at its peak erupted on August 16, 2020, producing a coronal mass ejection (CME). Consensus model results suggest an arriving glancing blow on August 20 -- producing unsettled to active geomagnetic field conditions, with a chance for...

August 18, 2020

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Study finds correlation between solar activity and large earthquakes worldwide

A new study published in the Nature Scientific Reports on July 13 suggests that powerful eruptions on the Sun can trigger large earthquakes on Earth. In the paper, the authors analyzed 20 years of proton density and velocity data, as recorded by the SOHO satellite,...

July 16, 2020

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Solar storm hits Earth, sparking active geomagnetic conditions

Our Sun launched two solar storms this week, one of which was Earth-directed, Space Weather Physicist Dr. Tamitha Skov reports in her latest space weather forecast released July 14, 2020. The storm has hit, right on time, and all through the night people have been...

July 15, 2020

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First M-class solar flare of Solar Cycle 25 - Impulsive M1.1 at 07:24 UTC on May 29

A moderately strong solar flare measuring M1.1 erupted at 07:24 UTC on May 29, 2020. This is the first M-class solar flare of the new solar cycle -- Solar Cycle 25. The event started at 07:13, peaked at 07:24, and ended at 07:28 UTC. The eruption took place on the...

May 29, 2020

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Deep-space radiation reaching a percentage point of Space Age maximum

Solar activity is at very low levels and the visible disk remains spotless for the 17th day in a row, making a total of 33 days in 2020 or 66 percent -- we are still in a Solar Minimum, which is expected to end sometime this year. As a result of weakened Sun's...

February 19, 2020

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First multi-spot group of Solar Cycle 25 - Active Region 2753 numbered on December 24, 2019

After 40 days with no sunspots on the Earth-facing side of the Sun, a new sunspot emerged near the southeast limb of the Sun on December 23, 2019, and was numbered Active Region 2753 on December 24. The region has magnetic polarity -/+, opposite of +/- magnetic...

December 24, 2019

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G2 - Moderate Geomagnetic Storm Watch in effect

The solar wind environment is expected to become enhanced and disturbed later on September 27, 2019 (UTC). G1 - Minor Geomagnetic Storm Watch is in effect for September 27, G2 - Moderate for September 28. Quiet to unsettled geomagnetic field conditions are expected...

September 27, 2019

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Enhanced solar wind environment after glancing blow from a slow-moving CME

Solar wind parameters over the past 24 hours were indicative of enhanced solar wind environment, likely caused by a combination of a glancing blow from a slow-moving Coronal Mass Ejection and influences of a negative polarity CH HSS. Total IMF strength was at 5 to 6...

September 25, 2019

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Earth enters a stream of fast-moving solar wind, G2 - Moderate Geomagnetic Storm Watch in effect

Our planet has entered a stream of fast-moving solar wind flowing from a large positive polarity coronal hole. A G1 - Minor Geomagnetic Storm Watch is in effect for August 31 and G2 - Moderate for September 1. Solar wind parameters reflected a slow regime through...

August 31, 2019

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5 Earth-directed CMEs, G3 - Strong geomagnetic storm

A several degree long solar filament south of the Region 2741 disappeared by approximately 15:14 UTC on May 13, 2019. Initial analysis suggests an Earth-directed component is likely with this Coronal Mass Ejection (CME). This is the fifth Earth-directed CME since...

May 14, 2019

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Asymmetric full halo CME impact expected late May 11 into May 12

An asymmetric full halo CME with a likely Earth-directed component erupted May 6, 2019. The source is still unknown, it is possible this was another stealth CME. Sun's northeastern limb continued exhibiting increased CME activity on May 6 and 7, 2019. This...

May 08, 2019

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C9.9 solar flare erupts from AR 2740, the strongest since October 2017

A moderately strong solar flare measuring C9.9 erupted from AR 2740 (Beta-Delta) at 05:10 UTC on May 6, 2019. The event started at 05:04 UTC and ended at 05:12 UTC. This is the strongest solar flare since M1.0 at 23:28 UTC on October 20, 2017. A Type II Radio...

May 06, 2019

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Impulsive C5.6 solar flare erupts from AR 2736, source of yesterday's full-halo CME

An impulsive solar flare measuring C5.6 at its peak time erupted from AR 2736, the source of yesterday's C4.8 and associated asymmetric full-halo CME, at 03:12 UTC on March 21, 2019. The event started at 03:08 and ended at 03:15 UTC. There were no radio...

March 21, 2019

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C4.8 solar flare erupts from AR 2736, full-halo CME produced

A solar flare measuring C4.8 at its peak erupted from newly-emerged AR 2736 on March 20, 2019. The eruption started at 10:35, peaked at 11:18 and ended at 11:34 UTC. The region was also responsible for several B-class flares over the past 7 hours. The flare was...

March 20, 2019

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C1.3 solar flare erupts from geoeffective Region 2734, CME impact expected March 11

A long-duration solar flare measuring C1.3 at its peak erupted from Region 2734 (Alpha) at 03:19 UTC on March 8, 2019. The event started at 03:07, peaked at 03:19 and ended at 03:58 UTC. This event was associated with a Type II Radio Emission registered at 03:15 UTC...

March 08, 2019

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C5.0 solar flare erupts from AR2733, the strongest since February 18, 2018

A weak solar flare measuring C5.0 at its peak erupted from Active Region 2733 at 13:22 UTC on January 26, 2019. The eruption started at 13:12 and ended at 13:34 UTC. This was the strongest solar flare since February 18, 2018. It was preceded by B1.5 at 03:49 UTC,...

January 26, 2019