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#spaceweather — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #spaceweather, aggregated by home.social.

  1. #SpaceWeather #Solar #sflorg
    Geophysical Alert Message

    Solar-terrestrial indices for 06 September follow.
    Solar flux 110 and estimated planetary A-index 5.
    The estimated planetary K-index at 1200 UTC on 07 September was 4.00.

    No space weather storms were observed for the past 24 hours.

    Space weather for the next 24 hours is predicted to be minor.
    Geomagnetic storms reaching the G1 level are likely.
    sflorg.com/p/space-weather.html

  2. Space Weather

    Disturbed geomagnetic conditions are continuing.

    Significant solar wind dynamic pressure of 30 cm^3 is being recorded at L1, along with a marked negative Bz swing to ~ -12nT.

    Solar wind speed has jumped above 500km/s. The DST (Disturbance Storm Time Index) peaked positive due to the initial compression from the CME impact, but it's now swinging negative as the ring current intensifies. Later, as the storm peaks, energy will be released via magnetic reconnection in the magnetotail, shooting accelerated electrons Earthward along field lines to trigger substorms and hopefully aurora.

    #spaceweather
    #aurora
    #g7izu

  3. 🟡 Hey Melbourne, aurora odds are looking pretty decent tonight — sitting at 67%. Might be worth a peek!

    Check conditions and your local forecast 👉 lumina.observer

    #Aurora #AuroraNow #AustralianAurora #AuroraAustralis #SpaceWeather

  4. 🟡 Hey Melbourne, aurora odds are looking pretty decent tonight — sitting at 67%. Might be worth a peek!

    Check conditions and your local forecast 👉 lumina.observer

    #Aurora #AuroraNow #AustralianAurora #AuroraAustralis #SpaceWeather

  5. 🔴 Substorm expansion phase

    Substorm breakup in progress — aurora is likely active now. Ground confirmation at Macquarie Island.

    lumina.observer/events

    #SpaceWeather #Substorm #Aurora #AuroraAustralis

  6. 🔴 Substorm expansion phase

    Substorm breakup in progress — aurora is likely active now. Ground confirmation at Macquarie Island.

    lumina.observer/events

    #SpaceWeather #Substorm #Aurora #AuroraAustralis

  7. 🟡 Hey Tasmania, aurora odds are looking pretty decent tonight — sitting at 53%. Might be worth a peek!

    Check conditions and your local forecast 👉 lumina.observer

    #Aurora #AuroraNow #AustralianAurora #AuroraAustralis #SpaceWeather

  8. 🟡 Hey Tasmania, aurora odds are looking pretty decent tonight — sitting at 53%. Might be worth a peek!

    Check conditions and your local forecast 👉 lumina.observer

    #Aurora #AuroraNow #AustralianAurora #AuroraAustralis #SpaceWeather

  9. Space Weather

    CME arrival: The first CME in a potential series has arrived overnight - somewhat earlier than predicted.

    IMF Bz is strongly southward and substorms are now hitting polar regions.

    HF radio will be degraded at high latitude and polar regions - aurora is possible.

    Space Weather Ops Dashboard:
    tvcomm.co.uk/g7izu/space-weath

    #spaceweather
    #aurora
    #g7izu

  10. 🔴 Sustained southward Bz detected

    Bz has been consistently southward (currently -8.5 nT). Sustained southward fields maximise geomagnetic coupling and support aurora activity.

    lumina.observer/events

    #SpaceWeather #Aurora #AuroraAustralis

  11. 🔴 Sustained southward Bz detected

    Bz has been consistently southward (currently -8.5 nT). Sustained southward fields maximise geomagnetic coupling and support aurora activity.

    lumina.observer/events

    #SpaceWeather #Aurora #AuroraAustralis

  12. 2026-09-07 00:00:00 UTC

    HOW IS SPACE WEATHER NOW?

    CURRENT CONDITIONS:
    🟢 Solar Wind: 359.6 km/s (1 h avg)

    FORECAST FOR TODAY:

    🟢 Radio Blackout: R0
    - No effects

    🟡 Solar Radiation Storm: S1
    - The HF radio signal in polar regions is meh

    🟢 Geomagnetic Storm: G0
    - No effects

    #SpaceWeather

  13. 2026-09-07 00:00:00 UTC

    HOW IS SPACE WEATHER NOW?

    CURRENT CONDITIONS:
    🟢 Solar Wind: 359.6 km/s (1 h avg)

    FORECAST FOR TODAY:

    🟢 Radio Blackout: R0
    - No effects

    🟡 Solar Radiation Storm: S1
    - The HF radio signal in polar regions is meh

    🟢 Geomagnetic Storm: G0
    - No effects

    #SpaceWeather

  14. 2026-09-07 00:00:00 UTC

    HOW IS SPACE WEATHER NOW?

    CURRENT CONDITIONS:
    🟢 Solar Wind: 359.6 km/s (1 h avg)

    FORECAST FOR TODAY:

    🟢 Radio Blackout: R0
    - No effects

    🟡 Solar Radiation Storm: S1
    - The HF radio signal in polar regions is meh

    🟢 Geomagnetic Storm: G0
    - No effects

    #SpaceWeather

  15. 2026-09-07 00:00:00 UTC

    HOW IS SPACE WEATHER NOW?

    CURRENT CONDITIONS:
    🟢 Solar Wind: 359.6 km/s (1 h avg)

    FORECAST FOR TODAY:

    🟢 Radio Blackout: R0
    - No effects

    🟡 Solar Radiation Storm: S1
    - The HF radio signal in polar regions is meh

    🟢 Geomagnetic Storm: G0
    - No effects

    #SpaceWeather

  16. 2026-09-07 00:00:00 UTC

    HOW IS SPACE WEATHER NOW?

    CURRENT CONDITIONS:
    🟢 Solar Wind: 359.6 km/s (1 h avg)

    FORECAST FOR TODAY:

    🟢 Radio Blackout: R0
    - No effects

    🟡 Solar Radiation Storm: S1
    - The HF radio signal in polar regions is meh

    🟢 Geomagnetic Storm: G0
    - No effects

    #SpaceWeather