Space weather - page 2

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

m1 2 solar flare september 4 2017

Geoeffective Region 2673 unleashed M1.2 solar flare, Earth-directed CMEs possible

A large and geoeffective Active Region 2673 (beta-gamma) unleashed a moderately strong M1.2 solar flare at 05:49 UTC on September 4, 2017. The event started at 05:36 and ended at 06:05 UTC. The region increased 10-fold in a single day, suddenly becoming one of the...

September 04, 2017

aurora forecast 3 30 utc august 22 2017

Sudden enhancement in solar wind environment sparks G2 - Moderate geomagnetic storm

G2 - Moderate geomagnetic storm conditions were observed early August 22, 2017 due to a sudden enhancement in solar wind environment. SWPC said conditions are not expected to increase any higher, with solar winds continuing to decrease as the day progresses....

August 22, 2017

m1 1 solar flare august 20 2017

Solar flare measuring M1.1 erupts from Region 2672

A moderately strong solar flare measuring M1.1 erupted from new Region 2672 (beta) at 01:52 UTC on August 20, 2017. The event started at 01:36 and ended at 02:03 UTC. Solar activity was at moderate levels on August 20 due to an M1 flare from an emerging region on...

August 20, 2017

coronal hole august 15 2017

CH HSS sparks isolated periods of G1 geomagnetic storming

Our planet is under the influence of a coronal hole high speed stream (CH HSS) which is causing isolated periods of G1 - Minor geomagnetic storming over the past 2 days, August 17 and 18, 2017. Meanwhile, solar activity is very low. There is only one numbered active...

August 18, 2017

farside eruption july 23 2017

Major solar flare erupts near the eastern limb, no Earth-directed CMEs

A pair of solar flares erupted near the eastern limb of the Sun at about 00:55 and 03:25 UTC on July 23, 2017 and were observed in STEREO-A EUVI 195 imagery. The source is Active Region 2665 which produced a long-duration M2.4 solar flare and Earth-directed CME on...

July 23, 2017

aurora forecast july 22 2017 at 08 46 utc

Positive polarity CH HSS sparks G1 geomagnetic storm

A positive polarity coronal hole high speed stream (CH HSS) is affecting our planet and will continue to do so over the next three days. Over the past 24 hours, by 12:30 UTC on July 22, solar wind parameters as measured by DSCOVR spacecraft reflected the influence...

July 22, 2017

july 14 2017 coronal mass ejection

CME hits Earth, sparks G2 - Moderate geomagnetic storm

A coronal mass ejection (CME) produced by the July 14th M2.4 long-duration solar flare hit Earth's magnetic field at 06:01 UTC on July 16, 2017. G2 - Moderate geomagnetic storming started 9 hours later. The S1 Minor solar radiation storm that started at 09:00...

July 16, 2017

CME july 14 2017 m2 4 solar flare

Long-duration M2.4 solar flare erupts, Earth-directed CME

Active Region 2665 produced a long-duration solar flare measuring M2.4 at its peak time on July 14, 2017. Today's event lasted for more than 2 hours; it started at 01:07, peaked at 02:09 and ended at 03:24 UTC. The eruption produced a coronal mass ejection (CME)...

July 14, 2017

aurora forecast 19 30 utc july 9 2017

CH HSS sparks geomagnetic storms reaching G1 levels

Our planet is under the influence of a positive polarity CH HSS which is causing geomagnetic storms reaching G1 - Minor levels. During the past 24 hours, solar wind parameters reflected the onset of a co-rotating interactive region (CIR) followed by the influence of...

July 09, 2017

m1 2 solar flare july 9 2017

Impulsive M1.3 solar flare erupts from big Region 2665

Big sunspot region 2665 (beta) erupted with an impulsive solar flare measuring M1.3 at its peak time on July 9, 2017. The event started at 03:09, peaked at 03:18 and ended at 03:37 UTC. The last time our star unleashed an M-class solar flare was on July 4, 2017....

July 09, 2017

m1 3 solar flare july 3 2017 sdo aia 304

Impulsive M1.3 solar flare erupts near the west limb

Solar activity was at moderate levels on July 3, 2017, with 14 B-class and one impulsive M1.3 solar flare observed at 16:15 UTC. The M-class event started at 15:37 and ended at 16:18 UTC. The last time our star unleashed an M-class solar flare was on April 3, 2017....

July 04, 2017

partial halo cme june 28 2017 lasco c2

Partial-halo CME impact sparks G1 geomagnetic storm

A partial-halo coronal mass ejection (CME) produced on June 28, 2017 hit Earth's magnetic field at 17:12 UTC on July 1, almost 24 hours earlier than expected. The impact was weak but managed to spark a G1 - Minor geomagnetic storm 17 hours later. G1 Watch...

July 02, 2017

aurora june 16 2017 by stan cholak

Recurrent CH HSS sparks G1 geomagnetic storming

Earth is under the influence of a recurrent, negative polarity coronal hole high speed stream (CH HSS) today which is causing G1 - Minor geomagnetic storming. Solar wind speed increased to 548 km/s at 08:08 UTC while total field reached a maximum of 16 nT at 07:16...

June 16, 2017

steve may 28 2017

CME impact sparks G3 - Strong geomagnetic storm

A coronal mass ejection (CME) produced during the early UTC hours of May 23, 2017 hit Earth's magnetic field at 15:36 UTC on May 27, more than 24 hours after it was expected. Although the solar wind speed is relatively slow, the embedded magnetic field had a...

May 28, 2017

cme impact model may 26 2017

CME headed toward Earth, impact expected around 12:00 UTC on May 26

An eruption near the center of Earth-facing side of the Sun produced a partial HALO CME (coronal mass ejection) during the early UTC hours of May 23, 2017. The CME is weak, but it has an Earth-directed component. Arrival at Earth is expected around 12:00 UTC on May...

May 24, 2017