The arrival of a Coronal Mass Ejection (CME) from the sun means that aurora sightings may be possible after dark this evening Scotland and northern England have the best chance of seeing the #NorthernLights with a good chance of clear skies too

Pretty amazing moonlit #aurora in the sky over central Slovenia this evening! Visually beautiful crimson red display with distinct rays and motion. Lower mid latitude. Dr. Tamitha Skov Harlan Thomas Landon Moeller #StormHour Daniel Fischer @[email protected] PK Dunja (@[email protected]) Meteoinfo Slovenija Portal v vesolje

#Aurora in southern Austria, at Dst of around -120 nT this event is borderline for visibility at mid-latitudes, but it seemed to work out.

Polarlichter am Wörthersee in Kärnten gestern Nacht. Peak um ca. 21:30. #AuroraBorealis in Carinthia last night, peak 9:30 PM CET. Christian Möstl Clemens TZ InViennaVeritas ChristineScharfetter Jure Atanackov Manuel Oberhuber Damian Thread /1

If confirmed, we may just have seen the highest daily sunspot number in 20 years. helioforecast.space/solarcycle

Fantastic sighting of the #aurora from a mountaintop in Austria on 2024 May 2. The geomagnetic Dst index reached -101 nT yesterday, which seems to me now a rough threshold for the possibility to see #aurora in good viewing conditions in central Europe.

With our (experimental) ELEvo model we get CME arrivals at Earth starting Friday May 10 at 16 UT +/- 7 hours, arrival speeds 600-900 km/s. All CMEs in DONKI are shown. The 4 halo CMEs are the wide and fast ones towards Earth on May 8/9. Others go to high/low latitudes.

Aaand we have the L1 near Earth shock arrival at 2024 May 10 16:37 UT, our ELEvo model forecast of the arrival time got that one pretty perfect! Total magnetic field 45.3 nT. In the meantime, more Bz < 0 at -45 nT at STEREO-A.

What a time to be alive 😆

Scott McIntosh Some major steps would include: - see the aurora at all times (✅ European Space Agency Aurora C and D, 2027 and 2030) - go to L5 (✅ European Space Agency Vigil from 2031) - have a few spacecraft in far distant retrograde orbits (DRO) or at ~0.5 au around the☀️, telling us the magnetic field of incoming CMEs.

Please ☀️ I need some time to analyze your previous eruptions, give me a break longer than one solar rotation, thank you.

The Austrian meteorological and geophysical service geosphere.at, of which we Austrian Space Weather Office, GeoSphere Austria are a part, gets a 30+ % budget increase and steady planning for 2024-2026. Really awesome to see this recognition of the environmental sciences! 🌦️☀️💨 (german) science.orf.at/stories/322546…

Out on arxiv today, I co-author a new paper led by Andreas Weiss NASA Goddard in which a deformable flux rope model 🤯 for #solarstorm magnetic fields is introduced. An application to a multipoint CME observation on 23 April 2023 is included too! arxiv.org/abs/2406.13022

Cool 😎 article by Kasha Patel in The Washington Post on the current #solarcycle and its amazing #aurora events, quoting me, Scott McIntosh ☀️ Sara Housseal ☀️ and others. washingtonpost.com/climate-enviro…

While we wait for images from ESA's Juice mission's Earth flyby last night, it's fun to play with NASA's "Eyes on the Solar System" website to follow along the trajectory for the past 48 hours. eyes.nasa.gov/apps/solar-sys…

A new study by Jeffrey Love et al. places the magnitude of the 1859 Carrington event at Dst = -964 nT with a 1 sigma range of -855 to -1087 nT. Very useful for future talks! swsc-journal.org/articles/swsc/…

There will be a new webinar series on Solar Orbiter for the wider solar and space physics communities, on every 1st Wednesday of the month. cosmos.esa.int/web/solar-orbi…