Solar activity

aia 304 at 00 58 utc july 5 2018

Plasma filament eruptions detected on the Sun, Earth-directed CME possible

Two plasma filament eruptions were detected on the Sun on July 5, 2018, and it seems at least one weak Earth-directed Coronal Mass Ejection (CME) was produced; ETA July 9 or 10. In addition, a relatively strong farside eruption took place on July 5 and its CME (not...

July 06, 2018

c1 5 solar flare february 12 2018 aia 171

Long-duration C1.5 solar flare produced Earth-directed CME

A long-duration C1.5 solar flare erupted from geoeffective Active Region 2699 on February 12, 2018. The event started at 00:15, peaked at 01:35 and ended at 03:21 UTC. A G1 - Minor geomagnetic storm watch is in effect for February 15. This event produced an...

February 13, 2018

solar filament eruption december 15 2017

Filament eruption, spotless Sun, Total Solar Irradiance and cosmic radiation

A 13-degree long plasma filament eruption was observed in SDO/AIA 304 imagery starting at 12:29 UTC on December 15, 2017. A glancing blow is expected late December 19, in combination with a recurrent, positive polarity CH HSS. Meanwhile, solar activity is at very...

December 17, 2017

filament eruption november 25 2017 aia211

Solar filament eruption, possible glancing blow on November 29

A solar filament was observed lifting off the Sun's northeastern quadrant beginning at approximately 04:45 UTC on November 25, 2017. An associated weak Coronal Mass Ejection (CME) was observed in SOHO/LASCO C2 and C3 imagery and the analysis shows a potential...

November 26, 2017

cme produced by m1 1 solar flare october 20 2017

Moderate M1.1 solar flare off eastern limb, old Region 2673 returns

A moderately strong solar flare measuring M1.1 at its peak erupted at 23:28 UTC on October 20, 2017 from the vicinity of old Region 2682, numbered 2673 two rotations ago. Radio signatures suggested and coronagraph imagery confirmed, a Coronal Mass Ejection (CME) was...

October 21, 2017

double solar eruption october 18 2017 lasco c3

Powerful double solar eruption beyond the east limb

A powerful double solar flare eruption took place beyond the Sun's east limb early October 18, 2017. The responsible region is now rotating into Earth view and will be visible in a couple of days. The eruption was associated with a Type II (estimated velocity 1...

October 18, 2017

x8 2 solar flare september 10 2017

Glancing blow expected from CME produced by major X8.2 solar flare

A major X8.2 solar flare that erupted at 16:06 UTC on September 10, 2017 from Region 2673, produced a powerful asymmetric full halo Coronal Mass Ejection (CME) and it appears one part of it is heading toward Earth. A glancing blow is expected late on September 13....

September 11, 2017

solar radiation storm hitting lasco c3 september 11 2017

S3 - Strong solar radiation storm in progress, active alert for aircrews and pregnant passengers

A powerful X8.2 solar flare erupted from Region 2673, located just around the visible disk, at 16:06 UTC on September 10, 2017, causing R3 - Strong radio blackout and a rapid increase in relativistic proton levels. Within just 3 hours, solar radiation storm reached...

September 11, 2017

x8 2 solar flare 16 28 utc september 10 2017 sdo aia 131

4th X-class flare: X8.2 erupts from Region 2673, second strongest of the cycle

A major solar flare measuring X8.2 (R3-Strong radio blackout) at its peak time erupted from Active Region 2673 at 16:06 UTC on September 10, 2017. The event started at 16:44, peaked at 16:06 and ended at 16:31 UTC. This is the 4th X-class solar flare from this...

September 10, 2017

m8 1 solar flare september 8 2017 07 58 utc aia 131

Strong M8.1 solar flare erupts from Region 2673

A strong solar flare measuring M8.1 at its peak erupted from Active Region 2673 at 07:49 UTC on September 8, 2017. The event started at 07:40 and ended at 07:58 UTC. This is the third M-class solar flare of the day and the 18th since September 4, when the first...

September 08, 2017

x1 3 solar flare september 7 2017

3rd X-class solar flare: Major X1.3 flare erupts from Region 2673, CME produced

A major solar flare measuring X1.3 at its peak time erupted from Region 2673 at 14:36 UTC on September 7, 2017. The event started at 14:20, peaked at 14:36 and ended at 14:55 UTC. This is the third X-class solar flare since X2.2 at 09:10 UTC and X9.3 at 12:02 UTC on...

September 07, 2017

m7 3 solar flare september 7 2017

Impulsive M7.3 solar flare erupts from Region 2673

An impulsive solar flare measuring M7.3 at its peak time erupted from Region 2673 at 10:15 UTC on September 7, 2017. The event started at 10:11, peaked at 10:15 and ended at 10:18 UTC. It comes a day after two major X-class solar flares erupted from the same region....

September 07, 2017

wsa enlil cme model

Shock arrival from September 4 Coronal Mass Ejection

The coronal mass ejection (CME) produced by the M5.5 solar flare on September 4, 2017 arrived at the DSCOVR spacecraft on September 6 at 23:08 UTC and at Earth 30 minutes later. The impact did not spark a geomagnetic storm, but the potential still exists as the CME...

September 07, 2017

x9 3 solar flare september 6 2017 aia 131 f

Major X-class flare: X9.3 from geoeffective AR 2673, CME produced - the strongest flare of the current cycle

A major X-class solar flare erupted from geoeffective Active Region 2673 peaking as X9.3 at 12:02 UTC on September 6, 2017. The event started at 11:53, peaked at 12:02 and ended at 12:10 UTC. This is the second X-class solar flare of the day. It comes just hours...

September 06, 2017

x2 2 solar flare september 6 2017 09 13 utc aia 131

Powerful, long-duration X2.2 solar flare erupts from geoeffective AR 2673

A powerful, long-duration solar flare measuring X2.2 at its peak time erupted from geoeffective Active Region 2673 at 09:10 UTC on September 6, 2017. The event started at 08:48 and ended at 09:59 UTC. This is the first X-class solar flare since May 5, 2015. There...

September 06, 2017

asymmetric full halo cme m5 5 solar flare september 5 2017

Direct CME hit expected, G3 Strong geomagnetic storm watch issued

An asymmetric full halo Coronal Mass Ejection (CME) produced by the M5.5 solar flare at 20:33 UTC on September 4, 2017 is traveling toward Earth and is expected to arrive late on September 6. G3 - Strong geomagnetic storm watch is in effect for September 6 and 7....

September 05, 2017

m5 5 september 4 2017

7 M-class solar flares from geoeffective region, Earth-directed CME produced, S1 radiation storm

Geoeffective Active Region 2673 produced 7 M-class and at least 8 C-class solar flares on September 4, 2017. The strongest was M5.5 at 20:33 UTC associated with an asymmetric full halo Coronal Mass Ejection (CME). This region has the potential to produce more strong...

September 05, 2017