Geomagnetic storms

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

Earth under the influence of high speed solar wind stream

Earth is currently under the influence of a high speed solar wind stream originating in large southern coronal hole. Although the bulk of this stream is headed south of our planet, we have already experienced severe geomagnetic storm periods at high latitudes.Geomagneti

January 04, 2015

G1 (Minor) geomagnetic storm underway

Earth is currently under the influence of a coronal hole high speed solar wind stream (CH HSS) which is causing geomagnetic storming around the poles.K-index of 5 (G1-Minor) threshold was reached at 17:18 UTC today. Area of impact is primarily poleward of 60 degrees Geo

December 29, 2014

Minor geomagnetic storm in progress, weak negative CH HSS expected

According to the SWPC, the ACE satellite observed a pair of discontinuities in the solar wind field during the past 24 hours. The first discontinuity at 02:35 UTC on December 21 was weak and possibly indicated the arrival of a glancing blow from the December 17th Corona

December 22, 2014

Impulsive M1.5 erupts off the east limb, Earth under the influence of CH HSS

An impulsive solar flare measuring M1.5 at its peak time erupted early on December 13, 2014, from a region rotating around the SE limb. The event started at 05:13, peaked at 05:20 and ended at 05:25 UTC.This new region shows a good potential for increased solar activity

December 13, 2014

G1 (Minor) geomagnetic storm in progress

NOAA/SWPC issued G1 (Minor) geomagnetic storm alert early on December 7 due to the high speed solar wind stream originating from a geoeffective coronal hole in the Sun's southern hemisphere. Geomagnetic K-index of 5 (G1 - Minor) threshold was reached at 01:24 UTC to

December 07, 2014

Geomagnetic storm (G1) in progress, severe levels at high latitudes

Solar wind parameters indicated the arrival of the November 7 CME earlier today. At approximately 01:37 UTC, when CME arrived, total field increased from around 10 nT to a maximum of 23 nT at 01:46 UTC. The Bz component increased to +21 nT before briefly going southward

November 10, 2014

CME generated by X1.6 solar flare to arrive on November 10

A partial halo Coronal Mass Ejection (CME) was generated by major X1.6 solar flare on November 7, 2014.WSA/ENLIL modeling of the event shows a partially Earth-directed component that is expected to impact the geomagnetic field early to midday on November 10 causing acti

November 08, 2014

Dynamic auroras visible for the fifth day in a row

For the 5th day in a row a crack in the Earth's magnetosphere is allowing solar wind to reach Earth. Although a full geomagnetic storm is not required to generate auroras at this time of the year, coronal hole effects and multiple solar sector changes currently affe

October 01, 2014

CME impact from X1.6 solar flare generated strong G3 geomagnetic storm and bright auroras

The Earth's magnetic field got disturbed in response to the arrival of the September 10 halo CME caused by X1.6 solar flare. Magnetometers around the world recorded a Geomagnetic Sudden Impulse at 15:55 UTC which signaled the arrival of the CME at

September 12, 2014

Two CMEs heading toward Earth, severe geomagnetic storms expected

There are currently two Coronal Mass Ejections (CMEs) heading toward our planet and their combined arrival is expected to spark severe geomagnetic storms.The first one, released by the long duration M4.5 solar flare on September 9, is expected to hit Earth's magneti

September 11, 2014

Geomagnetic storm in progress, auroras visible at high latitudes

Plasma cloud unleashed by M-class solar flare on August 22 reached our planed early Wednesday, August 27. Wind speeds increased from near 280 km/s to 340 km/s while density remained primarily between 5-10 p/cc (protons per cubic centimeter).Active to minor storm (G1) co

August 28, 2014

Geomagnetic storm reached G2 levels, amazing auroras photographed from ISS

A Coronal Mass Ejection (CME) unleashed by solar filament eruption on August 15 started interacting with Earth's magnetic field around 07:00 UTC on August 19 causing, at first, only a minor instability.As the Earth passed through the plasma cloud the effects in

August 20, 2014