Space weather

af 21 10 utc oct 8 2018 f

Coronal hole high speed stream sparks geomagnetic storm

Earth is under the influence of a positive polarity coronal hole high speed stream (CH HSS) on October 7 and 8, 2018. G1 - Minor geomagnetic storm conditions were observed at 16:22 UTC and 20:42 UTC on October 7, 2018. A G2 warning has been issued and is valid until...

October 08, 2018

char september 10 2018

Positive polarity CH HSS sparks geomagnetic storming

A G2 - Moderate geomagnetic storm watch has been issued for September 11, 2018 due to the onset of positive polarity coronal hole high speed stream. Solar wind parameters over the past 24 hours were descriptive of the passage of Co-rotating Interaction Region (CIR)...

September 11, 2018

2018 08 26_12h24_16

CME sparks G3 Strong geomagnetic storm; reverse polarity sunspot appears on the Sun

G3 Strong geomagnetic storm levels associated with the passage of slow-moving August 20th Coronal Mass Ejection were observed early August 26, 2018. A faint and slow-moving CME was first seen in LASCO coronagraph imagery at approximately 22:00 UTC on August 20. The...

August 26, 2018

aia 304 at 00 58 utc july 5 2018

Plasma filament eruptions detected on the Sun, Earth-directed CME possible

Two plasma filament eruptions were detected on the Sun on July 5, 2018, and it seems at least one weak Earth-directed Coronal Mass Ejection (CME) was produced; ETA July 9 or 10. In addition, a relatively strong farside eruption took place on July 5 and its CME (not...

July 06, 2018

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

solar cycle declining more quickly than  forecast 2018

SWPC: Solar Cycle 24 declining more quickly than forecast

Current solar cycle 24 is declining more quickly than forecast, NOAA's Space Weather Prediction Center (SWPC) reports. The smoothed, predicted sunspot number for April to May 2018 is about 15. However, the actual monthly values have been lower, they say. Will...

April 27, 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 SpaceWeather.com...

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

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