Geomagnetic storms

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Geomagnetic storm reaching G2 - Moderate levels in progress, CME hit expected on August 24

A co-rotating interaction region (CIR) ahead of a series of positive polarity coronal hole high speed streams (CH HSS) is causing elevated geomagnetic field levels on Sunday, August 23, 2015.A further enhancement is expected early to midday August 24 with the arrival

August 23, 2015

Geomagnetic storm reaching G3 (Strong) levels in progress, extreme conditions possible

During the last 24 hours, solar wind parameters, measured by the ACE spacecraft, were indicative of background solar wind conditions until 07:45 UTC on August 15, when a sudden impulse occurred due to the arrival of a co-rotating interaction region (CIR) ahead of a

August 15, 2015

G1-Minor geomagnetic storm in progress

A G1-Minor geomagnetic storm is in progress as a result of coronal hole high speed stream (CH HSS) buffeting Earth's magnetic field.Effects from the CH HSS are expected to continue disrupting the solar wind environment for the rest of the July 13.By July 14,

July 13, 2015

Coronal hole high speed stream causing geomagnetic storming

During the late UTC hours of July 10, 2015, coronal hole high speed stream (CH HSS) hit Earth's magnetic field causing enhanced geomagnetic activity.Geomagnetic K-index of 5 threshold (G1-Minor geomagnetic storm) was first reached at 22:44 UTC. Area of impact was pr

July 11, 2015

Geomagnetic storming briefly reaches G2-Moderate levels

During the last 24 hours, solar wind parameters reflected an enhanced solar wind environment due to the onset of a co-rotating interaction region (CIR) in advance of a negative polarity coronal hole high speed stream (CH HSS). Solar wind speed increased from initial va

July 05, 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

Geomagnetic storming reaching G2-Moderate levels in progress

Coronal Mass Ejection (CME) produced by a long duration M6.5 solar flare on June 22 appears to have arrived at 13:00 UTC on June 24.Bt increased to 15nT and solar wind velocities increased to over 700 km/s at the time. Bz, however, remained largely positive and the over

June 25, 2015

Geomagnetic storming reaching G4-Severe levels in progress

Three Coronal Mass Ejections (CMEs) produced on June 18, 19 and 21 have now all arrived at our planet and their combined effects caused G4-Strong geomagnetic storm on June 22, 2015. Two of the three CMEs were produced by Region 2371, one of the biggest regions of the cu

June 22, 2015

Three Earth-directed CMEs trigger G3-Strong Geomagnetic Storm Watch

Coronal Mass Ejections (CMEs) from June 18, 19 and 21 have significantly increased chances for G3-Strong geomagnetic storms on June 22, 2015. Two of the three CMEs were produced by Region 2371, one of the biggest regions of the current solar cycle, which is currently di

June 22, 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

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

Geomagnetic storm reaching G2 - Moderate in progress

Earth's geomagnetic field is disturbed since early June 7, 2015 as a result of solar sector boundary crossing (SSBC) preceding the negative polarity CH HSS. Geomagnetic storms reaching G2 - Moderate are in progress today.SWPC said SSBC occurred at 01:45 UTC on June

June 08, 2015

Geomagnetic storm reaching G2 - Moderate levels in progress

Geomagnetic storm reaching G2 - Moderate levels is currently in progress due to continued accelerated solar wind speeds and enhanced magnetospheric activity. This activity is attributed to a well connected coronal hole located just south of the solar Equatorial plane, S

May 13, 2015

Southern pole connected CH HSS causes unsettled to major geomagnetic storms

Southern pole connected coronal hole high speed stream (CH HSS) is causing unsettled to major (G2 - Moderate) geomagnetic storms since April 15, 2015.Geomagnetic K-index of 6 (G2 - Moderate) threshold was reached at 23:27 UTC on April 16, 2015.During the last 12 hours (

April 17, 2015

Geomagnetic storm reaching G2 Moderate levels in progress

The solar wind environment at the ACE spacecraft displayed two weak transient signatures near 01:00 and 09:00 UTC on April 9, 2015, suggesting the arrival of the April 6 Coronal Mass Ejection (CME) from Region 2320 and a weak coronal hole high speed stream (CH HSS).Wind

April 10, 2015

Strongest geomagnetic storm of SC24 sparks spectacular aurora display

The strongest geomagnetic storm of the current solar cycle (Solar Cycle 24) reached G4 Severe levels (Kp=8) on March 17, 2015 and sparked spectacular auroras in both hemispheres of our planet. The event was identified as the combined effects of CMEs which erupted on Mar

March 18, 2015

CMEs impact, geomagnetic storms reaching G4 Severe in progress

A sequence of events led to an Earth-directed asymmetric halo CME on March 15, 2015. The events began with a 14 degree long filament eruption, centered near S24W38, lifting off between 00:45 to 02:00 UTC. This was followed by C2.4 flare at 00:41 UTC and a long duration

March 17, 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

G1-Minor geomagnetic storm in progress

A G1-Minor geomagnetic storm is currently in progress due to the influence of a recurrent negative polarity coronal hole high speed stream (CH HSS). Geomagnetic K-index of 5 (G1) threshold was reached at 02:31 UTC on February 24, 2015. Area of impact is primarily polewa

February 24, 2015

Southern crown coronal hole stirring up geomagnetic storms

Earth is currently under the influence of a high speed solar wind speed, originating in negative polarity southern crown coronal hole, which is causing periods of geomagnetic storming on our planet.Solar wind readings indicated a co-rotating interaction region (CIR) whi

February 02, 2015

Unanticipated CME hit causes G3 - Strong geomagnetic storm

Our planet is still under the influence of coronal hole high speed solar wind speed (CH HSS) which is fueling geomagnetic storming around the poles. Additionally, an unanticipated Coronal Mass Ejection (CME) passed the ACE spacecraft and Earth around 05:30 UTC today

January 07, 2015