The expected shock and slow #solarstorm arrived on 2026 Aug 2 11:29 UT, there is a potential for high latitude #aurora in the upcoming hours but at a speed of only 400 km/s and a field of 15 nT no other impacts are expected.

On late Thursday 30 July 2026 there was a strong solar storm eruption to about 45° west of Earth (M1.9 flare, speed 1240 km/s), for which we expect minor 🌍 impacts given its main direction away from Earth. The arrival is predicted for late Saturday August 1 to early Sunday Aug 2 by forecast models.

The website with the eclipse predictions for 12 August 2026 by KU Leuven is online now! sun.esa.int/eclipse/

ESA Solar Eclipse 2026

Follow the ESA Solar Eclipse 2026 live experience and predictions.

sun.esa.int

A new study in @nature.com Sivadas et al. (2026) is just published - they show the solar wind we measure at L1 does not map exactly to that impacting the magnetopause, and this leads to an illusion of saturation of the magnetosphere for strong #solarstorms. www.nature.com/articles/s41...

Regression to the mean can explain saturation of geomagnetic storms - Nature

The saturation of geomagnetic activity with solar wind strength can be explained by a regression to the mean effect, suggesting that the impact of extreme geomagnetic storms can be twice as large as p...

nature.com

The 2nd strongest geomagnetic storm of the year 2026 is currently underway (Dst -158 nT), caused by presumably 2 #solarstorm eruptions on June 30 / July 2. The southward field is recovering from -18 nT to -5 nT, speed is 600 km/s. Likely the storm subsides by evening in Europe, but lets see!

Very picturesque sequence of ☀️ events: first a comet diving into the Sun, then a solar storm erupting on late Tue June 30 (X1.1 flare at N17° W18°). This storm is clearly northward directed, but may lead to high-latitude #aurora. 🌍 Arrival time (ELEvo): Thu July 2 18:57 ± 6 hours, speed ~750 km/s

As predicted by solar rotation - which is very reliable 😉 - there are several very big sunspots now at disk center, however, they are largely non-eruptive so far. They make a great target for solar telescopes or projections of the solar disk. ‼️ Always use proper equipment when viewing the ☀️!

A big active region, which has so far not been very productive with eruptions, is now rotating into view on the southern hemisphere. In about 4-5 days (Monday 29 June / Tuesday 30 June) it will face the Earth, but we need to see whether it will become more eruptive until then.

Even though many in Europe right now would prefer a seminar on arctic science and exploration 🧊, here's one about the Sun ☀️ and the solar wind later today.

International Space Science Institute (ISSI)@issibern.ch · last mo.

☀️ Save the date for the next webinar presenting new discoveries and insights from Parker Solar Probe and Solar Orbiter with Marco Velli (UCLA) 🔭 🗓️ Thursday, 25th June (17:00 CEST | 11:00 EDT) Details: www.issibern.ch/results/game... @august-jansen.bsky.social #sun #parkersolarprobe #solarorbiter

We had an amazing time at #solarwind17 in Bath / UK, learning about current solar wind science on all scales and presenting our work on solar storm forecasting and multispacecraft observations of their evolution. Plus a visit of Stonehenge and World Cup wins for England and Austria!

There was only a borderline moderate geomagnetic storm on June 5-6 2026, with a Dst geomagnetic index minimum of -60 nT and a Newell coupling (a parameter to quantify the solar wind - magnetosphere connection) of 3.6 times the mean value. Still way enough for a great high-latitude #aurora show!

Kevin M. Gill@kevinmgill.bsky.social · 2mo ago

Some spectacular shots of red and green aurora australis (southern lights) taken on June 5th from the International Space Station by astronaut Jessica Meir. The ISS was at about 51˚ 12' South Latitude at the time, south of Australia. flic.kr/p/2siCEm2 flic.kr/p/2siCk6C

The @noaa.gov #spaceweather prediction center now has a page where one can see plasma and magnetic field data from 4 different spacecraft at the ☀️- 🌍 L1 point: ACE / DSCOVR / SOLAR-1 (former SWFO-L1) / IMAP Great having this redundancy! www.swpc.noaa.gov/products/sol...

#solarstorm modeling results - our ELEvo model predicts an arrival at Earth of the solar storm from yesterday at June 8, 02:41 UTC (+/- 5.9 hours). We will monitor the situation and provide updates as new data comes in. 💫#spaceweather

Update - An interplanetary shock has arrived at Earth around 04:30 UT. In situ data shows a complex structure, likely due to interaction with a preceding #CME (arrival around 2:30 UT). Bz is intermittently turning southward, Dst remains positive (for now). We're watching closely 👀

#solarstorm modeling results - our ELEvo model predicts arrivals at Earth of solar storms from yesterday between June 4, 23:18 UTC, and June 5, 2:23 UTC (+/- 6h). We will monitor the situation and provide updates as new data comes in. 💫#SpaceWeather

Nice overview of historic solar observations all the way to Parker Solar Probe @esa.int Solar Orbiter by @quantamagazine.bsky.social ! www.quantamagazine.org/how-we-see-t...

How We See the Beautiful, Violent Sun | Quanta Magazine

Over hundreds of years, increasingly sophisticated instruments have revealed — and continue to reveal — the secrets of our star.

quantamagazine.org

Impressions from #EGU26 last week in Vienna, with our presentations on @esa.int sub-L1 future mission concepts for #spaceweather, an improved understanding of #solarstorm evolution driven by multipoint in situ observations, hybrid modeling for #solarstorm forecasts and 3D flux rope modeling! ☀️💥

We will be around at @egu.eu in Vienna / Austria May 4-8 and present our work on sub-L1 monitors led by @chrisoutofspace.bsky.social, @spacedavies.bsky.social and Eva Weiler, and a hybrid AI+physics pipeline (NEXUS) by @hannahruedisser.bsky.social, already useable on current L1 data. #EGU2026

Nice overview of the first new ESA #space safety missions!

ESA Operations@operations.esa.int · 3mo ago

Meet Aurora, Swing and Sawa 👋 Space weather can disrupt many modern services on which we depend. While it can't be prevented, with ESA's upcoming space weather sensor missions, Europe will know when to brace for impact.

#solarstorm update - an interplanetary shock (likely associated with the Apr 1 CME) has arrived at L1 with a speed of ~800 km/s. The total magnetic field remains <15 nT, and Dst shows no significant response so far. We'll continue to monitor and provide updates if conditions change 🌤️ #SpaceWeather

#solarstorm alert - another large partial halo CME was observed on Apr 1 (~23:45 UTC), following a C-class flare. The ejecta is directed mostly northwest, so no direct hit is expected. Our ELEvo model predicts a possible flank encounter tonight (Apr 3) around 23:00 UTC. 🌤️ #SpaceWeather

#solarstorm update — the CME-driven shock arrived at Earth at ~11:30 UTC on Apr 1, significantly later than predicted. Likely a flank encounter: L1 solar wind measurements show total magnetic field strength <15 nT with a speed of ~500 km/s, resulting in no significant disturbances 😴 #SpaceWeather

#solarstorm modeling results - our ELEvo model predicts arrival at Earth of the large solar storm from earlier today around 12:17 UTC (±6.17h) on Mar 31. We continue to monitor the situation closely and will provide updates as new data comes in. 💫 #SpaceWeather

#solarstorm alert 💥 - Following today's X1.4 flare (peak ~03:21 UTC, Mar 30), LASCO C3 reveals a large halo CME with an initial speed of ~1845 km/s. The eruption is directed slightly east of the Sun–Earth line. We're keeping a close eye on this one!

Faint red aurora are currently visible from Zugspitze in southern Germany. credit: foto-webcam.eu

Two flux ropes have been detected at L1, with the second one carrying a more southward-oriented magnetic field (current Bz −10 nT, Btot 13 nT). For now, conditions remain quiet (Dst: +30 nT), but additional CMEs are expected, which could lead to some geomagnetic activity in the coming hours. 💫

Our automatic CME detection tool STRUDL (Bauer+2025) has caught a nice, slow event in STEREO/HI beacon data that is currently on its way towards Earth. It is predicted to arrive within the next few hours (19 March, 17:00 UT). ☀️

We've been featured on Austrian national TV ORF2 in "Mayrs Magazin" roaming around Austria's magnetic Conrad observatory and talking about solar storms, with @chrisoutofspace.bsky.social and Veronika Haberle. The @esa.int HENON and Vigil missions were mentioned too! on.orf.at/video/143147...

Sonnenstürme könnten Stromnetze lahmlegen - Mayrs Magazin - Wissen für alle vom 13.03.2026

Die Sonne befindet sich aktuell auf dem Höhepunkt ihres elfjährigen Zyklus. Dadurch treten Sonnenstürme häufiger auf, die Satelliten beschädigen und sogar Stromnetze gefährden können. Forscher des Spa...

on.orf.at

Our paper "ARCANE–Early Detection of Interplanetary Coronal Mass Ejections" is now published in Space Weather! We study how machine learning performs on real-time data rather than curated science datasets - an important step toward moving from research to operations. doi.org/10.1029/2025...

ARCANE–Early Detection of Interplanetary Coronal Mass Ejections

We provide a modular framework to develop and evaluate methods for early detection of interplanetary coronal mass ejections in real-time We assemble an archive of real-time solar wind data to ass...

doi.org

Our paper on machine learning assisted improvement of STEREO beacon data led by @lelouedecj.bsky.social was included in the recent STEREO science highlights! paper: J. Le Louëdec et al. 2025 Space Weather doi.org/10.1029/2025... highlights: stereo-ssc.nascom.nasa.gov/publications...