Solar activity - page 5


Filament eruption produces CME off the west limb, proton spike

A solar filament/prominence was observed leaving the west limb of the Sun around 02:20 UTC today resulting in a Coronal Mass Ejection (CME). Although this CME has a trajectory which is away from the Sun - Earth line, and despite its relatively slow velocity, there was a

May 12, 2015

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Major solar flare reaching X2.7 erupts from Region 2339, CME produced

An impulsive, major solar flare reaching X2.7 erupted at 22:11 UTC on May 5, 2015 producing R3 (Strong) Radio Blackout. The event started at 22:05 and ended at 22:15 UTC. The source of this powerful eruption was old Region 2322, now numbered as 2339 and located on...

May 05, 2015

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Solar activity uptick - M1.9 solar flare erupts from the northeast limb (+ M1.2, M1.3, M2.6 and X2.7)

An impulsive solar flare measuring M1.9 at its peak time erupted at 09:47 UTC on May 5, 2015 from old Region 2322. This region is emerging from the northeast limb for its second transit through the Earth side of the Sun, and is now known as Region 2339. The event starte

May 05, 2015


Large solar filament erupts from the northeast quadrant

A large solar filament located in the northeast quadrant erupted around 14:00 UTC on April 28, 2015 sending a bright Coronal Mass Ejection (CME) into space.CME is visible in latest SOHO LASCO C2 imagery and it appears directed away from our planet.Image credit: ESA/NASA

April 28, 2015

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Solar activity reaches moderate levels - five M-class flares by 17:00 UTC

Departing Region 2322 produced two M-class solar flares by 12:00 UTC on April 21, 2015. The first one started at 07:08, peaked at 07:20 as M1.1 and ended at 07:27 UTC. Its second M-class flare of the day started at 11:49, peaked at 11:57 as M2.2 (R1 - Minor Radio Blacko

April 21, 2015


Large solar prominence erupts, CME produced

A large solar prominence dubbed "the Great Wall of Plasma" erupted off the northeast limb of the Sun at approximately 13:00 UTC on March 27, 2015. This spectacular structure was more than 6x taller and 30x wider than Earth before it erupted. A Coronal Mass Eje

March 27, 2015

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Powerful solar flare measuring X2.1 erupts from Region 2297

A major solar flare measuring X2.1 (R3-Strong radio blackout) erupted from Region 2297 at 16:22 UTC on March 11, 2015. The event started at 16:11 and ended at 16:29 UTC.A Type II (estimated velocity 1 461 km/s) and IV radio emissions were associated with the event. Type

March 11, 2015

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Increased solar activity continues, Region 2297 crackling with solar flares

Region 2297, currently the only numbered sunspot region on the Earth side of the Sun, is crackling with solar flares for the fifth day in a row. After 3 low level M-class flares on March 5 and 6, a long duration M9.2 on March 7 and impulsive M4.5 at 14:33 UTC on March 9

March 10, 2015

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Impulsive M4.5 solar flare erupts from Region 2297

An impulsive solar flare measuring M4.5 at its peak time erupted from Region 2297 at 14:33 on March 9, 2015. The event started at 14:22 and ended at 14:37 UTC.There were no radio signatures that would suggest a Coronal Mass Ejection was produced.This region is rotating

March 09, 2015

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Strong, long duration M9.2 solar flare erupts from Region 2297

Strong and long duration solar flare measuring M9.2 (R2 - Moderate) at its peak time erupted from Region 2297 at 22:22 UTC on March 7, 2015. The event started at 21:59 and ended at 22:49 UTC.A Type II (estimated velocity 704 km/s) and Type IV radio sweeps were associate

March 07, 2015

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Active region rotating onto the southeastern limb crackling with solar flares

Unnumbered region just rotating onto the southeastern limb produced 3 M-class (R1-Minor radio blackout) and several C-class solar flares in last 24 hours. The largest was a M3.0 that peaked at 04:57 UTC today, with the two M1 flares reaching their peaks at 18:11 UTC (M1

March 06, 2015

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Long duration M1.2 solar flare erupts beyond eastern limb

Active region located just beyond the East limb produced a long duration M1.2 solar flare peaking at 18:11 UTC today. The event started 17:06 and ended at 18:26 UTC.This region produced two low level C-class flares before the M1.2 today. It will become fully visible fro

March 05, 2015

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Impulsive M8.2 solar flare erupts off northwestern limb

An impulsive solar flare measuring M8.2 (R2 – Moderate Radio blackout) at its peak time erupted from Region 2290 at 01:35 UTC on March 3, 2015. The event started at 01:25 and ended at 01:42 UTC.A Type II (estimated velocity 750 km/s) and IV radio emissions were as

March 03, 2015

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Numerous M-class flares and CMEs off the northwestern limb

Solar activity reached moderate levels today when Region 2290 (N22W84, Hsx/Alpha) produced a pair of M1 (R1-Minor) flares at 06:39 (M1.0) and 09:48 UTC (M1.1). This region also produced numerous low and mid-level C-class flares over the last 24 hours.Numerous Coronal Ma

March 02, 2015

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Earth under the influence of CH HSS, geomagnetic storm in progress

Earth is under the influence of a southern polar coronal hole high speed stream (CH HSS) which is stirring up geomagnetic storms.Geomagnetic K-index of 5 (G1 - Minor geomagnetic storm) threshold was reached at 01:45 UTC today. Area of impact is primarily poleward of 60

March 01, 2015


Large solar filament erupts, produces partial halo CME

A large solar filament, which was stretching more than 857 780 km (533 000 miles) last week, finally erupted at approximately 09:25 UTC on February 21, 2015. As I feared, #solarstorm launch is huge filament that just rotated backside. STEREO A saw eruption of monster ev

February 22, 2015

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Long duration M2.4 solar flare erupts from Region 2282, full halo CME produced

A moderately strong, long duration solar flare measuring M2.4 at its peak time erupted from Region 2282 ('beta') late on February 9, 2015. The event started at 22:19, peaked at 23:35 and ended at 00:16 on February 10.This flare had associated Type II (estimated

February 10, 2015