Geomagnetic storms - page 4

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G2 - Moderate geomagnetic storm in progress

After strong G3 geomagnetic storm on March 6 and 7, solar wind parameters increased again around 04:00 UTC on March 11. The cause is most likely a Coronal Mass Ejection (CME) from March 6. Interplanetary magnetic field (IMF) total field (Bt) valuese steadly...

March 11, 2016

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Negative polarity CH HSS causes geomagnetic storming on Earth

A negative polarity, coronal hole high speed stream (CH HSS) became geoeffective early March 6, 2016, causing an increase in solar wind speeds and an enhanced interplanetary magnetic field. A G1 - Minor geomagnetic storm began at 17:28 UTC, increased to G2 -...

March 06, 2016

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Coronal hole causes G1 - Minor geomagnetic storm

A geomagnetic storm reaching G1 - Minor levels is currently in progress due to the arrival of the co-rotating interaction region (CIR) associated with coronal hole 55. The proton flux might reach S1 - Minor levels in the period between February 16 and 18 due to the...

February 16, 2016

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CME hits Earth, G3 Strong geomagnetic storming expected

The December 28th coronal mass ejection (CME) produced by the long duration M1.8 solar flare passed the ACE spacecraft at 00:02 UTC on December 31 and reached our planet at 00:51 UTC. Geomagnetic K-index of 4 threshold was reached at 01:05 UTC. The impact is...

December 31, 2015

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M-class solar flares erupting behind the Sun's northeast limb

An active region currently positioned behind the northeast limb erupted with two M-class solar flares by 10:19 UTC on December 21, 2015. The first event started at 00:52, peaked at 01:03 as M2.8 and ended at 01:11 UTC. The second event started at 10:09, peaked at...

December 21, 2015

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Geomagnetic storms reaching G2 Moderate levels in progress

A halo Coronal Mass Ejection (CME) generated by December 16th C6.6 solar flare has reached our planet on December 19 causing enhanced solar wind conditions, prolonged period of the southward magnetic field and planetary geomagnetic storms reaching G2 Moderate...

December 20, 2015

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CME hits Earth sparking geomagnetic storm

Two solar filaments erupted from the SW quadrant of the Sun late November 15 and early November 16 producing a Coronal Mass Ejections (CMEs) that arrived at Earth at 20:10 UTC on November 18. A G1 - Minor geomagnetic storm is currently in progress. This, combined...

November 19, 2015

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Geomagnetic storm reaching G2 - Moderate levels in progress

Geomagnetic storm reaching G2 - Moderate levels is currently in progress due to continuous influence from a positive polarity coronal hole. This influence will decrease over the next couple of days, however, the Coronal Mass Ejection (CME) associated with the M3.9...

November 10, 2015

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CME impact sparks geomagnetic storms reaching G2 moderate levels

Coronal Mass Ejection (CME) unleashed by a long duration M3.7 solar flare on November 4 reached our planet at 18:25 UTC on November 6, almost a full day earlier than it was expected. An enhanced magnetic field, coupled with winds speeds approaching 700 km/s have...

November 07, 2015

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The Sweden Case: Airplanes disappear from radars due to "solar storm"

Swedish media is reporting air traffic problems due to "solar storm" interfering with air traffic control radar systems during the afternoon of November 4, 2015. It is unclear, however, whether they meant the Solar Radiation Storm or Geomagnetic Storm, two...

November 05, 2015

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Large equatorial coronal hole causing major geomagnetic storming

Our planet is under the influence of positive polarity coronal hole today which is causing enhanced geomagnetic conditions. Geomagnetic K-index of 6 (G2-Moderate geomagnetic storm) threshold was first reached at 05:17 UTC today. Geomagnetic K-index of 7 (G3 - Strong...

October 07, 2015

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CME impact: Geomagnetic storm reaching G3 Strong levels in progress

Geomagnetic storm reaching G3 Strong levels is currently in progress as a result of Coronal Mass Ejection (CME) impact on top of Coronal Hole High Speed Stream (CH HSS) influence.The CME, produced by September 18th C-class solar flare, reached our planet at 06:05 UTC on

September 20, 2015

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Geomagnetic storming continues: G3 Strong levels reached on September 11

​Our planet's magnetic shield is again under stress today with brief G3 Strong geomagnetic storm levels reached around 09:00 UTC. The storms began on September 7 with positive polarity coronal hole reaching geoeffective position and an impact of plasma filament

September 11, 2015

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Why aurora is everywhere today: Solar storm news - September 10, 2015 with Dr. Tamitha Skov

The Earth continues to be slammed this week by a huge solar storm that has raged for several days, Dr. Tamitha Skov of the SpaceWeather.TV reports today. It started on September 7 and has kept us at moderate storm conditions nearly continuously since. Spectacular aurora

September 10, 2015

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Geomagnetic storm reaching G2 Moderate levels in progress

Geomagnetic storm reaching G2 Moderate levels is currently in progress due to the influence of a positive polarity coronal hole high speed stream (CH HSS). Geomagnetic K-index of 5 (G1 Minor) threshold was first reached at 15:00 UTC on September 7. K-index of 6 (G2 Mode

September 07, 2015

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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

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Geomagnetic storming expected to continue over the next two days

Geomagnetic storm reaching G2-Moderate levels has been observed on August 27, 2015, mostly due to effects of August 22 CME that arrived late on August 25. This activity is expected to slightly wane throughout the day, but active levels are again expected later in the da

August 27, 2015