Space weather

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

c1 5 solar flare february 12 2018 aia 171

Long-duration C1.5 solar flare produced Earth-directed CME

A long-duration C1.5 solar flare erupted from geoeffective Active Region 2699 on February 12, 2018. The event started at 00:15, peaked at 01:35 and ended at 03:21 UTC. A G1 - Minor geomagnetic storm watch is in effect for February 15. This event produced an...

February 13, 2018

sdo aia 171 december 20 2017

Solar activity cycle falls to the bottom 1.5 years earlier than expected

According to the Laboratory for X-ray Solar Astronomy of the PN Lebedev Physical Institute in Russia, the solar activity cycle has, by all indications, practically reached its minimum 1.5 years ahead of expected time. Given that the previous solar maximum in 2012...

December 20, 2017

solar filament eruption december 15 2017

Filament eruption, spotless Sun, Total Solar Irradiance and cosmic radiation

A 13-degree long plasma filament eruption was observed in SDO/AIA 304 imagery starting at 12:29 UTC on December 15, 2017. A glancing blow is expected late December 19, in combination with a recurrent, positive polarity CH HSS. Meanwhile, solar activity is at very...

December 17, 2017

polar connected ch december 5 2017 f

Polar-connected, positive polarity CH HSS sparks geomagnetic storming

A high-speed solar wind stream is affecting our planet today, causing geomagnetic storming. G2 - Moderate geomagnetic storm watch is in effect. Solar wind parameters indicated the onset of a Co-Rotating Interaction Region (CIR) in advance of a polar-connected,...

December 05, 2017

filament eruption november 25 2017 aia211

Solar filament eruption, possible glancing blow on November 29

A solar filament was observed lifting off the Sun's northeastern quadrant beginning at approximately 04:45 UTC on November 25, 2017. An associated weak Coronal Mass Ejection (CME) was observed in SOHO/LASCO C2 and C3 imagery and the analysis shows a potential...

November 26, 2017

pink aurora norway november 22 2017 cr copyright frank meissner

Remarkable pink aurora outburst over Norway

Over the past couple winters, big displays of pink and white auroras have coincided with spotless suns. The sight is often big enough to make observers wonder if there is a connection, SpaceWeather reports. The most recent remarkable outburst of pink auroras was...

November 25, 2017

coronal hole november 19 2017

CIR ahead of CH HSS sparks G1 - Minor geomagnetic storming

A Co-Rotating Interaction Region (CIR) ahead of isolated positive polarity Coronal Hole High Speed Stream (CH HSS) is affecting our planet today, causing geomagnetic storming. G1 - Minor geomagnetic storm threshold was reached 05:30 UTC. Over the past 24 hours,...

November 21, 2017

aurora forecast 21 05z november 7 2017

Geomagnetic storms reaching G2 - Moderate levels, spotless Sun

Earth is again under the influence of a recurrent, positive polarity, northern extension Coronal Hole High Speed Stream (CH HSS). G1 - Minor geomagnetic storm level threshold was reached at 11:55 UTC, followed by G2 - Moderate at 19:21 UTC. Over the past 24 hours,...

November 07, 2017

aurora october 23 2017 by markus varik norway

Recurrent, positive polarity CH HSS sparks geomagnetic storming

Our planet is again under the influence of a recurring, positive polarity Coronal Hole High Speed Stream (CH HSS), which is causing isolated periods of G1 - Minor geomagnetic storming. Over the past 24 hours, solar wind parameters were indicative of the arrival of a...

October 25, 2017

cme produced by m1 1 solar flare october 20 2017

Moderate M1.1 solar flare off eastern limb, old Region 2673 returns

A moderately strong solar flare measuring M1.1 at its peak erupted at 23:28 UTC on October 20, 2017 from the vicinity of old Region 2682, numbered 2673 two rotations ago. Radio signatures suggested and coronagraph imagery confirmed, a Coronal Mass Ejection (CME) was...

October 21, 2017

double solar eruption october 18 2017 lasco c3

Powerful double solar eruption beyond the east limb

A powerful double solar flare eruption took place beyond the Sun's east limb early October 18, 2017. The responsible region is now rotating into Earth view and will be visible in a couple of days. The eruption was associated with a Type II (estimated velocity 1...

October 18, 2017

aurora forecast 16 06 utc october 13 2017

Geomagnetic storming reaches G2 - Moderate levels

Our planet is under the influence of coronal hole high speed stream (CH HSS) for the third day in a row. The geomagnetic field was unstable, with isolated periods of G1 - Minor storm levels during the past two days and then increased to G2 - Moderate levels at 14:59...

October 13, 2017

aurora jun wang october 11 2017

Spotless Sun, CH HSS sparks geomagnetic storms

Geomagnetic storming reaching G1 - Minor levels is underway as our planet moves through a stream of high-speed solar wind. At the same time, solar activity is at very low levels with no flare activity and a spotless Sun on its Earth-facing side. Over the past 24...

October 12, 2017

global aurora mars september 2017

Large solar storm sparks global aurora and doubles radiation levels on Martian surface

When charged particles from a solar storm reached Mars this month, they set off an aurora 25 times brighter and surface level radiation readings twice as high as any previous measurements. An unexpectedly strong blast from the Sun hit Mars this month, observed by...

September 29, 2017

aurora by dar tanner september 28 2017

G3 - Strong geomagnetic storm levels reached

A recurrent, polar-connected, positive-polarity coronal hole is affecting our planet since September 27. G1 - Minor geomagnetic storm levels were reached at 08:48 UTC on September 27, followed by G2 - Moderate levels at 20:24 UTC and then increased to G3 - Strong...

September 28, 2017

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