Solar activity

may 9 2021 cme impact forecast

Incoming CME, impact expected early May 12

Two coronal mass ejections (CMEs) with Earth-directed components were produced on the Sun on May 9, 2021. The impact is expected early Wednesday, May 12. Active Region 2833 produced a long-duration C-class solar flare measuring C4.0 at its peak at 14:49 UTC on May 9...

May 10, 2021

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M3.9 solar flare erupts from Active Region 2822

A strong solar flare measuring M3.9 at its peak erupted from Active Region 2822 at 19:04 UTC on May 7, 2021. While this is one of the strongest solar flares of the new solar cycle -- SC25, the location of region 2822 does not favor Earth-directed CMEs. This event...

May 08, 2021

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C3.8 solar flare erupts from geoeffective Region 2816, CME produced

A C3.8 solar flare erupted from Active Region 2816 at 04:35 UTC on April 22, 2021, producing a coronal mass ejection (CME). The event started at 04:10 and ended at 05:00 UTC. The location of the source region favors Earth-directed CMEs. The flare was associated with...

April 22, 2021

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M1.1 solar flare erupts from AR 2816, produces coronal mass ejection (CME)

A moderately strong solar flare measuring M1.1 at its peak erupted at 23:42 UTC on April 19, 2021. The event started at 23:19 and ended at 23:59 UTC. The source was Active Region 2816 (beta). Associated with this event were Type II (shock velocity of 750 km/s) and...

April 20, 2021

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Solar wind parameters indicate the arrival of a slow-moving CME

Solar wind parameters over the past 12 hours indicated the arrival of a slow-moving Coronal Mass Ejection (CME), likely produced on April 10. A period of G1 - Minor storming began at 08:59 UTC on April 15. Another enhancement in parameters is expected on April 16...

April 15, 2021

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Filament eruption produces partial-halo CME, glancing blow expected

A solar filament eruption took place shortly before 12:00 UTC on February 20, 2021, producing a partial-halo CME. Analysis suggests a glancing blow from the periphery of the CME is likely on February 23 or 24. The CME signature was first observed in SOHO/LASCO C2...

February 22, 2021

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Unsettled to active geomagnetic field levels expected, G1 geomagnetic storm watch in effect

Unsettled to active geomagnetic field levels are possible on January 5, 2021, due to the onset of an anticipated Solar Sector Boundary Crossing (SSBC) followed by coronal hole influence late in the day. G1 - Minor geomagnetic storm conditions are likely on January 6...

January 05, 2021

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Long-duration C7.4 solar flare produces asymmetric full halo CME, impact expected on December 9

A long-duration solar flare measuring C7.4 at its peak erupted from Active Region 2790 -- positioned in Earth-striking zone -- at 16:32 UTC on December 7, 2020. The event started at 15:46, peaked at 16:32, and ended at 17:33 UTC. An asymmetric full halo coronal mass...

December 08, 2020

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Moderately strong M4.4 solar flare erupts, CME produced

A moderately strong solar flare measuring M4.4 at its peak erupted at 13:11 UTC on November 29, 2020, from a region about to rotate into Earth view. The event started at 12:34 and ended at 13:41 UTC. This is the strongest solar flare in more than 3 years. A Type II...

November 29, 2020

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Biggest sunspot in years producing multiple B- and C-class solar flares

Although solar activity remains at low levels, Active Region 2786 -- the biggest sunspot in years -- has produced multiple C- and B-class flares since November 25. Coronal Mass Ejections (CMEs) were also observed, but none was Earth-directed. While we are still...

November 28, 2020

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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