Articles tagged "geomagnetic storm"

aurora model run 0256z june 18 2018

Positive polarity CH HSS sparks G1 - Minor geomagnetic storm

A weak positive polarity Coronal Hole High Speed Stream (CH HSS) affecting our planet since late June 17, 2018, sparked a G1 - Minor geomagnetic storm at 02:56 UTC on June 18. Solar wind parameters, as measured by the DSCOVR spacecraft located at the L1 point, were...

June 18, 2018

aurora forecast model run at 06 16z june 1 2018

Negative polarity CH HSS sparks geomagnetic storming

A negative polarity Coronal Hole High Speed Stream (CH HSS) is affecting our planet today, sparking G1 - Minor geomagnetic storming. G1 threshold was reached at 13:29 UTC on June 1, 2018. Solar wind parameters became enhanced over the past 24 hours due to the effect...

June 01, 2018

aurora and steve minnesota may 5 2018 f

G2 - Moderate geomagnetic storm conditions observed

G2 - Moderate geomagnetic conditions were observed on May 6, 2018 in response to the influence of a negative polarity coronal hole high speed solar wind stream. G1 - Minor geomagnetic storm conditions were first observed at 17:59 UTC on May 5, followed by G2 at...

May 06, 2018

aurora from rice lake minnesota april 20 2018

G2 - Moderate geomagnetic storm in progress

A G2 - Moderate geomagnetic storm threshold was reached at 08:25 UTC on April 20, 2018 and G2 warning is in now in effect until 12:00 UTC. An interplanetary shock wave hit Earth's magnetic field around 23:50 UTC on April 19, Dr. Tony Phillips of

April 20, 2018

geoeffective np coronal hole march 13 2018

Negative polarity CH HSS sparks G2 - Moderate geomagnetic storm

A persistent negative polarity coronal hole high speed stream (CH HSS) sparked G2 - Moderate geomagnetic storm on March 18, 2018. A gradual return to background levels is expected on March 19 as CH HSS influence subsides. However, enhanced solar wind parameters are...

March 19, 2018

andrei enjoy the arctic february 26 2018

CH HSS sparks geomagnetic storm, G2 - Moderate warning

Geomagnetic storms caused by negative polarity, south polar coronal hole high speed stream (CH HSS) reached G1 - Minor levels early Tuesday, February 27, 2018. Solar wind parameters are expected to further increase today and a G2 - Moderate geomagnetic storm warning...

February 27, 2018

aurora model fcst 05 20 z february 18 2018

Negative polarity CH HSS sparks G1 - Minor geomagnetic storming

An isolated interval of G1 - Minor geomagnetic storm conditions was observed early February 19, 2018, due to the influence of negative polarity coronal hole high speed stream (CH HSS). Solar activity over the past 24 hours was at very low levels. Earth-facing side...

February 19, 2018

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

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

aurora forecast 09 40 utc apri 4 2017

G1 - Minor geomagnetic storm in progress

A G1 - Minor geomagnetic storm is in progress as of 08:14 UTC on April 4, 2017, due to Earth's proximity to the heliospheric current sheet (HCS) and weak influences of the southern polar, negative coronal hole high speed stream (CH HSS). Geomagnetic K-index of 5...

April 04, 2017

geomagnetic storms begin as potent coronal hole becomes geoeffective

Geomagnetic storms begin as potent coronal hole becomes geoeffective

A recurrent, negative-polarity coronal hole is affecting our planet, causing geomagnetic storming. A G2 - Moderate geomagnetic storm watch is in effect for March 28 and 29. A high speed solar wind stream produced by a recurrent, negative-polarity (potent) coronal...

March 27, 2017

sdo aia geoeffective coronal hole

CH HSS sparks geomagnetic storming, G2 warning issued

Earth is under the influence of a positive polarity coronal hole high speed stream (CH HSS) which is causing geomagnetic storming. G1 - Minor geomagnetic storm threshold was first reached at 16:12 UTC on March 21, 2017. A G2 - Moderate geomagnetic storm warning was...

March 21, 2017

visible_aurora_probability_model_run_at_08 05_utc_mar172015

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

aurora over reykjavik feb2 2015 copyright_reykjavikphoto com

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


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


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

Hall aurora_Sept_12

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

aurora_on_aug_19 20_2014_iss_reid_wiseman

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


Geomagnetic storm reaching G2 - Moderate levels in progress

Solar filament eruption on June 4th unleashed a Coronal Mass Ejection (CME) which partially hit Earth's magnetic field at 16:57 UTC on June 7, 2014. The impact sparked minor geomagnetic storming which increased by the morning of June 8th. Geomagnetic K-index of

June 08, 2014


Subsiding geomagnetic and solar radiation storms

Geomagnetic storm sparked by a combination of CMEs from last couple of days is now subsiding. We might still see uptick today but it will most likely remain below G1 levels.At 10:57 UTC on April 20, a 24 nT geomagnetic sudden impulse (interplanet

April 21, 2014

april_12_2014_aurora_forecast_at_07 05_utc_f

Geomagnetic storming in progress, bright auroras formed around the Arctic Circle

During the late hours of April 11 the Interplanetary Magnetic Field (IMF) tipped south and opened a crack in Earth's magnetosphere. Our planet is now under the influence of coronal hole high speed stream (CH HSS). CH HSS effects are expected to begin subsiding

April 12, 2014


Near X-class solar flare and geomagnetic storm - M9.3

Near X-class solar flare reaching M9.3 erupted from departing Sunspot 1996 on March 12, 2013 at 22:34 UTC. This decaying sunspot is located near eastern limb and generated CME was not geoeffective, however, it produced a R2 (Moderate) Solar Flare Radio Blackout

March 13, 2014

Alan_C_Tough_on_February_27 2014 Hopeman,_Moray,_Scotland

Subsiding geomagnetic storm sparked bright auroras over northern Europe, Greenland and Iceland

Coronal mass Ejection brushed Earth's magnetic field causing G2 (Moderate) Geomagnetic Storming late on February 27, 2014. The event was associated with the R3 (Strong) Solar Flare Radio Blackout event caused by February 25th X4.9 solar flare. A

February 28, 2014

aurora_australis_feb_19_2014_image_copyright_taichi_nakamura_   www traceoflight net

Geomagnetic storming in progress, M3.0 solar flare from western limb

As forecasted yesterday Coronal Mass Ejection (CME) hit Earth's magnetic field around 03:00 UTC today. That's a second CME impact within 24 hours, and another round of auroras.  SWPC issued Geomagnetic K-index of 6 (G2 - Moderate) alert at 05:28

February 20, 2014

g2_moderate_storming_in_progress_ _feb_19_2014_ _ao

Unexpected geomagnetic storming underway, reaching G2 (moderate) levels

Earth is currently under the influence of a Coronal Mass Ejection (CME) and G2 (Moderate) geomagnetic storming has been observed. According to SWPC, this is likely the result of what was expected to be a near miss from an event originally observed on

February 19, 2014

Taken_by_Peter_Rosen_on_January_1_ _2014

Minor geomagnetic storming, first auroras of 2014 - moderate solar activity to continue

High speed solar speed is creating brief periods of geomagnetic storming. High latitude skywatchers should be alert for auroras. Solar activity has been at moderate levels for the most of the day. There are 8 active sunspot regions on the Earth side of the

January 02, 2014

geomagnetic storm1

Interplanetary shock wave hit Earth's magnetic field - geomagnetic storm in progress

An interplanetary shock wave from yesterday's CME hit Earth's geomagnetic field at 20:23 UTC today. At the time, Boulder station measured magnetic field Bz component deviation of 62 nT. A G1 (minor) geomagnetic storm is currently underway. High

October 08, 2013


High-speed solar wind speed buffeting Earth's magnetic field - G1 geomagnetic storm in progress

A high-speed solar wind stream from a geoeffective coronal hole is buffeting Earth's magnetic field and causing geomagnetic storms around the poles. The Bz component of the interplanetary magnetic field (IMF) is rotating between north and south pointing

August 16, 2013


Solar wind stream buffeting Earth's magnetic field

During last 24 hours solar wind stream buffeted Earth's magnetic field causing geomagnetic storms around the poles. Geomagnetic conditions were short lived reaching G1 - Minor geomagnetic storm levels (Kp=5). At those levels weak power

August 05, 2013


Incoming CME to spark geomagnetic storming on July 13, 2013

We saw increased geomagnetic activity for past two days as Kp index reached K=5, G1 geomagnetic storming level, on July 10. A minor CME hit Earth's magnetic field on July 9, 2013 at approximately 20:30 UTC and peaked during the early hours of

July 12, 2013


Strong G3 geomagnetic storm in progress (June 29, 2013)

As Earth passes through a new coronal hole high speed stream, backed by unidentified CME shock, a prolonged interval of south-pointing magnetism (southward Bz) is having a strong impact on Earth's geomagnetic field. On June 29, 2013 Planetary K-index

June 29, 2013


Solar wind stream buffers Earth magnetic field

Earth is currently inside a solar wind stream flowing in from the massive coronal hole on the Sun's northern hemisphere. Elevated solar wind speed (above 600 km/s) combined with a south tilting Bz component of Interplanetary magnetic field (IMF) is responsible

June 23, 2013


Moderate geomagnetic storm in progress (June 7, 2013)

A moderate G2 Geomagnetic Storm (Kp=6) is currently in progress due the arrival of the fast flow from the low-latitude coronal hole at the northern hemisphere.​ Bz component of Interplanetary Magnetic Field (IMF) has been tipping sharply

June 07, 2013


C9.5 solar flare erupted from Sunspot 1762, geomagnetic activity subsided

Nearly M-class solar flare was released from Active Region 1762 in the southern hemisphere. Strong C9.5 flare erupted at 07:25 UTC on June 3, 2013. The event started at 07:03, peaked at 07:25 UTC and ended at 07:42 UTC. GOES X-Ray flux shows C9.5 solar flare on

June 03, 2013