Solar activity

11th M-class solar flare erupts from Region 2403, geomagnetic storm in progress

On August 28, 2015, departing Region 2403 produced its 10th and 11th M-class solar flare since it rotated onto the Earth side of the Sun. The first event started at 13:04, peaked at 13:16 as M2.2, and ended at 13:23 UTC. The second event started at 18:56, peaked at

August 28, 2015

Long duration M2.9 solar flare erupts from Region 2403

A moderately strong solar flare measuring M2.9 at its peak time erupted from Region 2403 on August 27, 2015. This was a long duration flare; the event started at 04:48, peaked at 05:44 and ended at 06:03 UTC.There were no associated radio signatures that would suggest a

August 27, 2015

Region 2403 produces its 7th and strongest M-class solar flare yet - M5.6 on August 24

At 07:33 UTC on August 24, Active Region 2403 produced its 7th M-class solar flare, and strongest so far, since it rotated onto the Earth side of the Sun. Today's event was impulsive in nature, it started at 07:26, peaked at 07:33 as M5.6 and ended at 07:35

August 24, 2015

4th M-class flare: M1.2 from Region 2403 peaks at 06:49 UTC on August 22 producing a CME

Region 2403 erupted with its fourth M-class solar flare at 06:49 UTC on August 22, 2015. The latest event started at 06:39, peaked at 06:49 as M1.2, and ended at 06:59 UTC. Radio signatures indicate a Coronal Mass Ejection (CME) was produced.A Type II Radio Emission wit

August 22, 2015

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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