Geomagnetic storms

aurora forecast 16 06 utc october 13 2017

Geomagnetic storming reaches G2 - Moderate levels

Our planet is under the influence of coronal hole high speed stream (CH HSS) for the third day in a row. The geomagnetic field was unstable, with isolated periods of G1 - Minor storm levels during the past two days and then increased to G2 - Moderate levels at 14:59...

October 13, 2017

aurora jun wang october 11 2017

Spotless Sun, CH HSS sparks geomagnetic storms

Geomagnetic storming reaching G1 - Minor levels is underway as our planet moves through a stream of high-speed solar wind. At the same time, solar activity is at very low levels with no flare activity and a spotless Sun on its Earth-facing side. Over the past 24...

October 12, 2017

aurora by dar tanner september 28 2017

G3 - Strong geomagnetic storm levels reached

A recurrent, polar-connected, positive-polarity coronal hole is affecting our planet since September 27. G1 - Minor geomagnetic storm levels were reached at 08:48 UTC on September 27, followed by G2 - Moderate levels at 20:24 UTC and then increased to G3 - Strong...

September 28, 2017

aurora forecast 20 55 utc september 27 2017

CH HSS sparks G2 - Moderate geomagnetic storming

A stream of high-speed solar wind coming from a recurrent, polar-connected, positive-polarity coronal hole is affecting our planet today and causing geomagnetic storming. G1 - Minor geomagnetic storm levels were reached at 08:48 UTC and increased to G2 - Moderate...

September 27, 2017

aurora forecast at 16 56 utc september 14 2017

G2 - Moderate geomagnetic storm in progress

Our planet is under the influence of a positive polarity coronal hole high speed stream (CH HSS) which is causing isolated periods of G2 - Moderate geomagnetic storming. Geomagnetic K-index of 5 (G1 - Minor) geomagnetic storm threshold was reached at 15:43 UTC. G2 -...

September 14, 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

aurora over finland september 8 2017

G4 - Severe geomagnetic storming observed as CME from X9.3 flare impacts Earth

A Coronal Mass Ejection (CME) produced by the X9.3 solar flare on September 6, 2017, reached our planet at 23:04 UTC on September 7, 2017, a full day earlier than it was expected. G3 - Strong geomagnetic storming started 23:25 and increased to G4 - Severe at 23:50...

September 08, 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

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

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

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

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

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

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