ULTRA-FAST CME EXPLODES FROM THE FARSIDE OF THE SUN: Earth just dodged a bullet. An exceptionally fast CME erupted from the farside of the sun yesterday. It’s aimed at Venus, not Earth. Just last week, however, the instigating sunspot was directly facing our planet. Full story @ Spaceweather.com.
Ydun Ritz (2025-10-22)
MULTIPLE CMEs ARE APPROACHING EARTH: As many as 3 CMEs are approaching Earth. According to a NOAA model, they could spark G2-class geomagnetic storms when they arrive on Oct. 16-17. High-latitude sky watchers (including observers in northern-tier US states) should be alert for auroras. Full story @ Spaceweather.com.
Ydun Ritz (2025-10-15)
Minor G1-class geomagnetic storms are possible today as Earth moves through a stream of fast-moving solar wind.
The gaseous material is flowing from an equatorial hole in the sun’s atmosphere with gusts as high as 900 km/s (2 million mph).
https://spaceweather.com
Mike Terry to WOR iog (2025-10-13)
An M1-class solar flare from sunspot 4236 hurled a CME into space on Oct. 3rd.
A NASA model predicts it will strike Earth on Oct. 8th.
Although it’s only a minor CME, it could spark a geomagnetic storm thanks to the Russell-McPherron effect, which links the magnetic fields of the sun and Earth around the equinoxes.
https://spaceweather.com
Mike Terry to WOR iog (2025-10-04)
Earth has entered a stream of solar wind blowing faster than 700 km/s (1.6 million mph).
This is extending geomagnetic unrest for the third day in a row.
NOAA forecasters say G2-class geomagnetic storms are possible on Oct. 1st with continued auroras at high latitudes.
https://spaceweather.com
Mike Terry to WOR iog (2025-10-01)
GIANT BUTTERFLY-SHAPED HOLE IN THE SUN’S ATMOSPHERE: A 500,000-km wide coronal hole has opened in the sun’s atmosphere, sending a stream of solar wind toward Earth. It could spark G1–G2 geomagnetic storms and auroras around Sept. 14th, enhanced by the Russell-McPherron effect. Full story @ Spaceweather.com.
Ydun Ritz (2025-09-11)
British Geological Survey.
We are expecting an increase in geomagnetic activity on Friday and throughout the weekend due to the combined effects of a coronal hole high speed stream (HSS) and the arrival of an Earth-directed Coronal
Mass Ejection (CME).
An M4.5-class solar flare occurred in the centre of the solar disk on 5th August 2025 at 15:53 UT.
This flare produced a CME that is traveling toward Earth at a moderate speed of over 500 km/s.
Additionally, the high speed stream from a recurrent coronal hole (CH69) is due to arrive on Friday.
The combined effect of the CME and the HSS is expected to enhance geomagnetic activity on Friday 8th August 2025 up to minor geomagnetic
storm level or G3 on the NOAA scale.
https://geomag.bgs.ac.uk/data_service/space_weather/alerts/alert_2025-08-06.html
Mike Terry to WOR iog (2025-08-06)
Sunspot 4168 erupted today, Aug. 5th, at 1553 UTC, producing an M4.4-class solar flare.
Type II solar radio emissions suggest that the explosion may have hurled a CME toward Earth at 865 km/s (1.9 million mph).
https://spaceweather.com
Mike Terry via WOR iog (2025-08-05)
SEVERE GEOMAGNETIC STORM WATCH: A CME is heading straight for Earth–see below. NASA and NOAA models agree that it will strike our planet sometime on June 1st. The impact could spark a severe (G4-class) geomagnetic storm with auroras visible across Europe and many US states. This won’t be as big as the famous May 2024 storm, but it could be one of the bigger events of Solar Cycle 25 if a severe storm materializes.
https://spaceweather.com/
Ydun Ritz (2025-06-01)
SURPRISINGLY STRONG GEOMAGNETIC STORM: NOAA predicted a minor geomagnetic storm. It turned out to be strong instead. A co-rotating interaction region (CIR) hit Earth on May 29th, sparking a G3-class geomagnetic storm. CIRs are transition zones between fast- and slow-moving streams of solar wind. They contain CME-like shock waves that do a good job sparking geomagnetic storms and auroras.
https://spaceweather.com/
Ydun Ritz (2025-05-29)
