iiinova — where your digital self keeps evolving

Austrian Space Weather Office @aswogeosphere.bsky.social · 16h

Over the weekend a moderate geomagnetic storm causing high-latitude aurora developed, with a minimum of -55 nT Dst on Sunday Oct 4. It was caused by a high speed solar wind stream after a minor impact of a solar storm on early Saturday Oct 3.

190

Austrian Space Weather Office @aswogeosphere.bsky.social · 01/10/2026

The NASA CCMC scoreboard, to which many teams in the world submit their realtime predictions for incoming #solarstorms, has just been relaunched with a new look: ccmc.gsfc.nasa.gov/CMESB-Earth/

020

Austrian Space Weather Office @aswogeosphere.bsky.social · 30/09/2026

Amazing data from SMILE! Indeed we haven’t seen the aurora like this in quite a while 😄

093

Reposted by Austrian Space Weather Office

Christian Möstl @chrisoutofspace.bsky.social · 22/09/2026

Amazing new reconstruction of sunspot number for the last ~1000 years by Saha et al. 2026: link.springer.com/article/10.1...

Sunspot number since the year 971, showing several long minima and the recent, more regular solar cycles

0128

Austrian Space Weather Office @aswogeosphere.bsky.social · 26/08/2026

Arrival of a solar transient was observed this morning around 7AM UTC at Solar Orbiter 💥 If this structure is associated with yesterday’s modelled CME, Earth arrival is predicted for 6:30AM UTC on Friday, 28.08. Blue shows our initial prediction, orange shows updated prediction using SolO arrival.

061

Austrian Space Weather Office @aswogeosphere.bsky.social · 25/08/2026

A CME is headed towards Earth, passing Solar Orbiter on its way! Due to arrive at Solar Orbiter tomorrow morning 9am UTC, when Solar Orbiter is 13.8° off the Sun-Earth line. Let's see if Solar Orbiter proves useful for our forecasts at Earth again🤞

050

Austrian Space Weather Office @aswogeosphere.bsky.social · 24/08/2026

Clear sign that this solar cycle is not over yet: a fast solar eruption (1300 km/s initial speed) on Aug 21 arrived late Aug 22 at the STEREO-A spacecraft, 68° west of Earth. It observed a magnetic field of 48 nT, ~4x the average value at 1 au. It did not measure strong southward Bz < 0 though.

081

Austrian Space Weather Office @aswogeosphere.bsky.social · 21/08/2026

We had the pleasure to host Vanessa Mercea of the University of Bern for a day at our office, talking about how satellite orbits are affected by the thermospheric expansion during #spaceweather events.

080

Reposted by Austrian Space Weather Office

EUMETSAT @eumetsat.int · 12/08/2026

Where were you when the #eclipse hit today? 🌖✨ While millions watched from the ground across Europe, we had a view from space. 🛰️ Did you catch the total or partial eclipse where you are? Let us know in the comments - and check back tomorrow for more imagery and information! 💬

69538

Austrian Space Weather Office @aswogeosphere.bsky.social · 12/08/2026

Crowds are gathering on the Schlossberg in Graz, Austria!

2111

Austrian Space Weather Office @aswogeosphere.bsky.social · 12/08/2026

Today in the evening on Aug 12 2026 the most interesting solar eclipse in Europe happens since 1999! In #Graz #Austria, members of our team will be present on top of the Schlossberg in the city center, at an eclipse viewing event organized by M. Temmer from @uni-graz.at ! ESA broadcast link👇

1101

Austrian Space Weather Office @aswogeosphere.bsky.social · 06/08/2026

Great #COSPAR2026 conference week in (hot) Florence, Italy, with 2 invited talks by Emma Davies and Christian Möstl, on the observations of #solarstorms between the Sun and Earth, their large scale magnetic structure, which we need to understand for better forecasts, and future @esa.int missions!

091

Austrian Space Weather Office @aswogeosphere.bsky.social · 06/08/2026

Amazing super high resolution images of the solar photosphere by the DKIST telescope on Maui, interpreted as Kelvin–Helmholtz instabilities. Kuridze et al. (2026), Nature www.nature.com/articles/s41... youtu.be/aVUwBmImyYM?...

youtu.be

NSF Inouye Solar Telescope: Kelvin-Helmholtz Instability Observations and Simulation Comparison

YouTube video by National Solar Observatory

072

Austrian Space Weather Office @aswogeosphere.bsky.social · 02/08/2026

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.

061

Austrian Space Weather Office @aswogeosphere.bsky.social · 31/07/2026

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.

061

Austrian Space Weather Office @aswogeosphere.bsky.social · 15/07/2026

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...

nature.com

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...

181

Austrian Space Weather Office @aswogeosphere.bsky.social · 04/07/2026

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!

Interplanetary magnetic field, geomagnetic Dst index and an aurora indicator. All show that the 2nd strongest geomagnetic storm of the year is ongoing.

1103

Austrian Space Weather Office @aswogeosphere.bsky.social · 01/07/2026

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

192

Austrian Space Weather Office @aswogeosphere.bsky.social · 29/06/2026

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 ☀️!

0110

Austrian Space Weather Office @aswogeosphere.bsky.social · 25/06/2026

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.

1184

Austrian Space Weather Office @aswogeosphere.bsky.social · 25/06/2026

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.

050

Reposted by Austrian Space Weather Office

Christian Möstl @chrisoutofspace.bsky.social · 19/06/2026

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!

0101

Austrian Space Weather Office @aswogeosphere.bsky.social · 16/06/2026

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!

291

Austrian Space Weather Office @aswogeosphere.bsky.social · 11/06/2026

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...

swpc.noaa.gov

Solar Wind Observations - Experimental Display | NOAA / NWS Space Weather Prediction Center

050

Austrian Space Weather Office @aswogeosphere.bsky.social · 07/06/2026

#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

0101

Austrian Space Weather Office @aswogeosphere.bsky.social · 05/06/2026

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 👀

Three-panel plot showing magnetic field (left-most panel), Dst index (middle panel), and Newell coupling (right-most panel).

0143

Austrian Space Weather Office @aswogeosphere.bsky.social · 04/06/2026

#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

073

Austrian Space Weather Office @aswogeosphere.bsky.social · 11/05/2026

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! ☀️💥

040

Austrian Space Weather Office @aswogeosphere.bsky.social · 30/04/2026

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

030

Austrian Space Weather Office @aswogeosphere.bsky.social · 29/04/2026

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

071

Austrian Space Weather Office @aswogeosphere.bsky.social · 03/04/2026

#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

0132

Austrian Space Weather Office @aswogeosphere.bsky.social · 03/04/2026

#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

0110

Austrian Space Weather Office @aswogeosphere.bsky.social · 01/04/2026

#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

0153

Austrian Space Weather Office @aswogeosphere.bsky.social · 30/03/2026

#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

2127

Austrian Space Weather Office @aswogeosphere.bsky.social · 30/03/2026

#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!

0177

Austrian Space Weather Office @aswogeosphere.bsky.social · 20/03/2026

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

0141

Austrian Space Weather Office @aswogeosphere.bsky.social · 20/03/2026

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. 💫

072

Austrian Space Weather Office @aswogeosphere.bsky.social · 19/03/2026

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). ☀️

0122

Reposted by Austrian Space Weather Office

Hannah Theresa Rüdisser @hannahruedisser.bsky.social · 09/03/2026

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...

doi.org

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...

081

Austrian Space Weather Office @aswogeosphere.bsky.social · 19/02/2026

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...

stereo-ssc.nascom.nasa.gov

071

Austrian Space Weather Office @aswogeosphere.bsky.social · 12/02/2026

The website is up for the European Space Weather Week November 2-6 2026 in Florence, Italy - the main conference for researchers, operators and end users in Europe in the #spaceweather domain each year. esww2026.eswan.eu

esww2026.eswan.eu

ESSW2026 Florence

020

Austrian Space Weather Office @aswogeosphere.bsky.social · 29/01/2026

This is a well researched video on the Airbus incident from end of last year, likely caused by galactic cosmic rays because there were no solar energetic particle events on that day. #aviation #spaceweather

youtube.com

WHAT Actually Grounded the Global Airbus A320 Fleet?!

YouTube video by Mentour Now!

0103