Solar activity - page 3

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Third M-class solar flare of the day erupts from Region 2403: Long duration M1.1

At 20:34 UTC on August 21, Region 2403 erupted with its third M-class solar flare of the day. The event started at 19:10, peaked at 20:34 as M1.1 and ended at 20:50 UTC.This was a long duration event. However, there were no recorded radio signatures that would suggest a

August 21, 2015

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Moderately strong M1.4 solar flare and CME produced by Region 2403

A second M-class solar flare of the day erupted from Region 2403 at 09:48 UTC on August 21, 2015. The event started at 09:34, peaked at 09:48 as M1.4 solar flare, and ended at 10:07 UTC. Radio signatures suggest a Coronal Mass Ejection (CME) was produced. These are the

August 21, 2015

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Moderately strong M1.2 solar flare erupts from Region 2403

Region 2403, located in the southeast quadrant, erupted with moderately strong M1.2 solar flare at 02:18 UTC on August 21, 2015. The event started at 01:56, peaked at 02:18 and ended at 02:37 UTC.There were no radio signatures that would suggest a Coronal Mass Ejection

August 21, 2015

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Region 2381 rapidly grows, produces M1.0 and M1.8 solar flares

Beta-gamma classified Region 2381 exhibited rapid growth over the past 24 hours (by 12:30 UtC today) and produced a moderately strong M1.0 solar flare at 08:44 UTC on July 6, 2015. The event started at 08:24 and ended at 08:59 UTC. There were no radio signatures that wo

July 06, 2015


Filament eruptions and impulsive M1.5 solar flare, geomagnetic storming expected due to CH HSS

Moderately strong solar flare reaching M1.5 at its peak time erupted at 12:53 UTC on July 3, 2015. The event started at 12:47 and ended at 12:53 UTC.The source was Region 2378, which rotated into the southwest quadrant yesterday producing innumerous C-class solar flares

July 03, 2015

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5th Earth-directed CME produced as long duration M7.9 solar flare erupts from Region 2371

Region 2371, the source of 4 Earth-directed Coronal Mass Ejections (CMEs) over the past couple of days, erupted with long duration M7.9 solar flare (R2-Moderate) at 08:16 UTC on June 25, 2015. The event started at 08:02 and ended at 09:05 UTC. A Type II (estimated veloc

June 25, 2015

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Long duration M6.5 solar flare erupts from Region 2371, 4th Earth-directed CME produced

Active Region 2371, the source of two Earth-directed Coronal Mass Ejections (CMEs) over the past couple of days, produced an M6.5 solar flare (R2-Moderate) at 18:23 UTC on June 22, 2015. The event started at 17:39 and ended at 18:51 UTC. Region 2371 is one of the

June 22, 2015


Earth-directed full-halo CME erupts from Region 2371, G3-Strong geomagnetic storm expected

Active Region 2371, now classifiead as Beta-Gamma-Delta and located near the center of the disk, erupted with two M-class solar flares - M2.0 and M2.7 - early on June 21, 2015 producing Earth-directed full-halo Coronal Mass Ejection (CME). Arrival is expected midday Jun

June 21, 2015


Partial-halo CME to deliver glancing blow on June 23

Filament eruption in the SSE quadrant of the Sun produced a partial-halo Coronal Mass Ejection (CME) first observed in coronagraph imagery near 08:45 UTC on June 19 (above). WSA-Enlil model suggests a glancing blow early on June 23. Beta-Gamma-Delta classified Region

June 20, 2015

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Region 2371 produced long duration M3.0 solar flare, glancing blow expected

Beta-Gamma classified Region 2371 produced a long duration M3.0 solar flare peaking at 17:35 UTC on June 18, 2015. The event started at 16:25 and ended at 19:00 UTC. A full-halo Coronal Mass Ejection (CME) was produced, it will likely make a glancing blow at Earth late

June 18, 2015

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Long duration M1.2 solar flare off the southwest limb produces large CME, solar radiation storm

A long duration M1.2 solar flare erupted from the vicinity of departing Region 2365, off the southwest limb, at 01:27 UTC on June 18, 2015. The event produced a large Coronal Mass Ejection (CME) and is currently causing solar radiation storm on Earth, reaching S1 (Minor

June 18, 2015

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Departing Region 2360 produces M1.3 solar flare

Solar activity is again reaching moderate levels today with 'beta-gamma' classified Region 2360 being the most productive. This region, located near the western limb, produced an M1.3 solar flare at 07:29 UTC on June 13. The event started at 07:20 and ended at 0

June 13, 2015


Increased solar activity, glancing blow CME impact expected on June 12

Solar activity has increased to moderate levels during last 24 hours with an impulsive M1.0 solar flare (R1-Minor) at 08:55 UTC on June 11, 2015. The source was an area of enhanced emission on the Sun's east limb.Current SDO imagery reveals a cluster of sunspots

June 11, 2015


Disturbed geomagnetic field: Brief G2 - Moderate geomagnetic storm

Earth's magnetic field is still disturbed in response to continued presence of a positive polarity coronal hole high speed stream (CH HSS), possibly combined with a transient feature originally expected for May 17. Between 12:30 UTC on May 18 and 12:30 UTC on May 1

May 19, 2015

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Several eruptive filament structures observed in last 24 hours

Several eruptive filament structures occurred during last 24 hours as observed in SDO/AIA and GONG/H-alpha imagery.The most impressive was an eruptive prominence (EPL) from the NE limb and a connected highly active and partially eruptive filament from the NE quadrant.

May 16, 2015


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 the n

May 05, 2015