Geomagnetic storms

g2 geomagnetic storm aurora forecast december 21 2016

G2 geomagnetic storm in progress

Earth is under the influence of a positive polarity coronal hole high speed stream today, December 21, 2016, which is causing geomagnetic storms reaching G2 Moderate levels. Shortly after 04:00 UTC on December 21, solar wind speeds increased to just over 500 km/s,...

December 21, 2016

9aurora forecast december 9 2016 21 50 z

G1 geomagnetic storm in progress

A geomagnetic storm is currently in progress due to ongoing negative polarity coronal hole high speed stream (CH HSS) influence. The G1 Watch is in effect for the next three days. Geomagnetic K-index of 5 (G1 - Minor geomagnetic storm) threshold was first reached at...

December 09, 2016

Aurora outburst Mia Stalnacke_ November 24 2016 Kiruna Sweden

Positive polarity CH HSS sparks geomagnetic storms

Earth is under the influence of a positive polarity coronal hole high speed stream (CH HSS). A sudden escalation in overall planetary geomagnetic response from a favorable solar wind environment and elevated solar wind streams triggered periods of G1 and G2...

November 25, 2016

coronal hole october 25 2016 aia 211 193 171 f

Geomagnetic storm in progress, CH HSS influence expected until October 27

​Earth is passing through a stream of high speed solar wind produced by a recurrent, polar connected, positive polarity coronal hole. This is causing isolated periods of G1 class geomagnetic storming. G2 - Moderate geomagnetic storm watch is in effect for October...

October 25, 2016

aurora forecast ovation prime model run at 22 41z october 13 2016 f

G2 geomagnetic storm in progress, G3 - Strong watch in effect for October 14

A filament in Sun's northeast quadrant erupted between 15:00 and 17:00 UTC on Saturday, October 8, 2016, producing an asymmetric, partial-halo CME. The CME, although faint, was first observed in LASCO C2 imagery beginning 00:48 UTC on October 9. It reached ACE...

October 13, 2016

aurora australis by varun dongre at maitri research base antarctica september 29 2016

Prolonged geomagnetic storming, isolated periods of G2 - Moderate levels

Earth is under the influence of a positive polarity coronal hole high speed stream (CH HSS) for several days now. Enhanced solar wind parameters are expected to continue through October 1, with G3 - Strong geomagnetic storm levels possible today. G2 - Moderate...

September 29, 2016

coronal hole 27 september 2016 sdo aia

Recurrent coronal hole sparks another round of geomagnetic storming

High-speed solar wind from a recurrent coronal hole has sparked another round of geomagnetic storming on Earth. The solar wind environment is expected to remain elevated but steady through the rest of the UTC day before becoming further enhanced on September 28 and...

September 27, 2016

geoeffective_ch_17sep2016_f

G1 - Minor geomagnetic storm conditions observed

During the past 24 hours, solar wind parameters transitioned from near background conditions to an enhanced state, causing G1 - Minor geomagnetic storming on Earth. This was most likely caused by the onset of co-rotating interaction region (CIR) ahead of a negative...

September 20, 2016

sdo_aia211_193_171_pfss_31aug2016_f

Positive polarity CH HSS sparks geomagnetic storm

Earth is under continued influence of a positive polarity coronal hole high speed stream (CH HSS), which is now causing geomagnetic storms at high latitudes. K-index of 5 (G1 - Minor geomagnetic storm) threshold was reached at 08:59 UTC on September 1, 2016. ...

September 01, 2016

g1_aurora_fcst_07 35utc_20jul2016_f

Geomagnetic storm in progress

A geomagnetic storm reaching G1 - Minor levels is currently in progress following the early arrival of July 17th Coronal Mass Ejection (CME). The interplanetary shockwave produced by the long duration C1 flare on July 17, initially expected to arrive early on July...

July 20, 2016

sdo_aia_211_193_171_21jun2016_aia_lmsal_f

Negative polarity CH HSS drives isolated periods of geomagnetic storming

Solar wind parameters reflected a brief enhancement associated with the arrival of a co-rotating interaction region (CIR) and subsequent negative polarity coronal hole high speed stream (CH HSS) late June 22, 2016. A gradual increase in solar wind speeds began after...

June 23, 2016

aurora_forecast_23 00_ut_14jun2016_f

Geoeffective coronal hole, geomagnetic storm in progress

A co-rotating interaction region (CIR) - the transition zone between slow- and fast-moving streams of solar wind - has hit Earth's magnetic field on June 14, 2016, sparking geomagnetic storms. As of 19:55 UTC, a G2 - Moderate geomagnetic storm is in progress and...

June 14, 2016

geoeffective_coronal_hole_1jun2016_sdo_aia_211_193_171_f

Recurrent CH HSS causing geomagnetic storms

A recurrent, negative polarity coronal hole high speed stream (CH HSS) has hit Earth's magnetic field causing geomagnetic storms on June 5, 2016. A G2 (Moderate) geomagnetic storm watch is currently in effect. This same CH HSS has affected Earth on May 8 with...

June 05, 2016

probability_of_visible_aurora_08 05_ut_8may2016_f

Strong geomagnetic storms in progress

A G3 - Strong geomagnetic storm conditions were observed beginning 05:59 UTC on May 8, 2016. G2 - Moderate to G3 - Strong geomagnetic storm conditions are expected through the rest of the day and possibly into May 9 and 10. This activity is caused by a recurrent,...

May 08, 2016

svante_sandstrom_sweden_2may2016_rf

G2 - Moderate geomagnetic storm

Enhanced solar wind conditions have fueled elevated geomagnetic field activity early May 2, 2016. Geomagnetic storms reaching G2 - Moderate levels have been observed. Geomagnetic K-index of 5 (G1 - Minor geomagnetic storm) threshold was first reached at 00:37 UTC on...

May 02, 2016

geomag_12_ _15_apr_2016_f

CH HSS causing isolated periods of G1 - Minor geomagnetic storming

Earth is under the influence of negative polarity coronal hole high speed stream (CH HSS) since late April 12, 2016. This is causing isolated periods of G1 - Minor geomagnetic storming. Geomagnetic K-index of 5 (G1 - Minor geomagnetic storm) threshold was first...

April 14, 2016

aurora_forecast_22 05_ut_7apr2016_f

Geomagnetic storm in progress

A geomagnetic storm reaching G1 - Minor levels is currently in progress as Earth enters a stream of positive polarity high-speed solar wind. Geomagnetic K-index of 5 (G1 - Minor geomagnetic storm) threshold was reached at 20:40 UTC on April 7: Space Weather Message...

April 07, 2016