#space-weather — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #space-weather, aggregated by home.social.
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Space Weather
The fast solar wind from a large coronal hole reached Earth a few hours ago.
A G1 geomagnetic storm is in progress. A G2 watch is in effect until midnight tonight (UT). A G1 watch will then be in effect for 16/17 May.
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#SpaceWeather #Solar #sflorg
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 May 15 1305 UTC
Valid To: 2026 May 15 2359 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment:NOAA Scale: G1 - Minor
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
https://www.sflorg.com/p/space-weather.html -
2026-05-15 00:00:00 UTC
HOW IS SPACE WEATHER NOW?
CURRENT CONDITIONS:
🟡 Solar Wind: 403.7 km/s (1 h avg)FORECAST FOR TODAY:
🟢 Radio Blackout: R0
- No effects🟢 Solar Radiation Storm: S0
- No effects🟡 Geomagnetic Storm: G2
- Long storms may cook a few transformers
- Aurora is visible down to 55° GML -
Space Weather
A large coronal hole has just passed the solar meridian. The fast solar wind should begin to affect Earth from tomorrow. A NOAA G2 geomagnetic storm watch is in effect for 15 May.
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#SpaceWeather #Solar #sflorg
WATCH: Geomagnetic Storm Category G2 PredictedHighest Storm Level Predicted by Day:
May 15: G2 (Moderate) May 16: G1 (Minor) May 17: G1 (Minor)THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. -
2026-05-14 00:00:00 UTC
HOW IS SPACE WEATHER NOW?
CURRENT CONDITIONS:
🟡 Solar Wind: 458.2 km/s (1 h avg)FORECAST FOR TODAY:
🟢 Radio Blackout: R0
- No effects🟢 Solar Radiation Storm: S0
- No effects🟢 Geomagnetic Storm: G0
- No effects -
#SpaceWeather #Solar #sflorg
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:May 14: None (Below G1) May 15: G2 (Moderate) May 16: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECTPotential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. -
2026-05-13 00:00:00 UTC
HOW IS SPACE WEATHER NOW?
CURRENT CONDITIONS:
🟢 Solar Wind: 351.5 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 #Solar #sflorg
Geophysical Alert MessageSolar-terrestrial indices for 11 May follow.
Solar flux 116 and estimated planetary A-index 5.
The estimated planetary K-index at 1200 UTC on 12 May was 0.33.No space weather storms were observed for the past 24 hours.
No space weather storms are predicted for the next 24 hours.
https://www.sflorg.com/p/space-weather.html -
2026-05-12 00:00:00 UTC
HOW IS SPACE WEATHER NOW?
CURRENT CONDITIONS:
🟢 Solar Wind: 377.2 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 -
2026-05-11 00:00:00 UTC
HOW IS SPACE WEATHER NOW?
CURRENT CONDITIONS:
🟢 Solar Wind: 389.2 km/s (1 h avg)FORECAST FOR TODAY:
🟢 Radio Blackout: R0
- No effects🟢 Solar Radiation Storm: S0
- No effects🟢 Geomagnetic Storm: G0
- No effects -
2 years ago I saw and got pictures of #AuroraBorealis during the May 10, 2024 solar storm. The second viewing location was Memaloose State Park, between Hood River and The Dalles, at an overlook above the Columbia River (Oregon/Washington border). Note the reflection of #aurora in the river. #astronomy #SpaceWeather #PNW
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2 years ago I saw and got pictures of #AuroraBorealis during the May 10, 2024 solar storm. It was the 2nd time I had seen #aurora, and so far the best. I drove east from Portland and could see aurora while I was driving. I stopped for pictures at Multnomah Falls (Oregon's most popular waterfall) and farther east at Memaloose State Park (between Hood River and The Dalles). First, from Multnomah Falls, note the falls were south and still had aurora in the background. #astronomy #SpaceWeather #PNW
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Space Weather
An M5. 79 flare peaked at 13h38 UT 10 May. A moderate R2 radio blackout affected Europe and N Atlantic regions.
Type II and 10.7cm radio emissions were observed, indicating the release of a CME, which turned out to be a significant CME, as seen in Lasco imagery. The flare occurred from the north-west limb so the CME was not Earth-directed.
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2026-05-10 00:00:00 UTC
HOW IS SPACE WEATHER NOW?
CURRENT CONDITIONS:
🟡 Solar Wind: 464.7 km/s (1 h avg)FORECAST FOR TODAY:
🟢 Radio Blackout: R0
- No effects🟢 Solar Radiation Storm: S0
- No effects🟢 Geomagnetic Storm: G0
- No effects -
2026-05-09 00:00:00 UTC
HOW IS SPACE WEATHER NOW?
CURRENT CONDITIONS:
🟡 Solar Wind: 530.2 km/s (1 h avg)FORECAST FOR TODAY:
🟢 Radio Blackout: R0
- No effects🟢 Solar Radiation Storm: S0
- No effects🟢 Geomagnetic Storm: G0
- No effects -
#SpaceWeather #Solar #sflorg
Geophysical Alert MessageSolar-terrestrial indices for 07 May follow.
Solar flux 117 and estimated planetary A-index 7.
The estimated planetary K-index at 1200 UTC on 08 May was 3.00.Space weather for the past 24 hours has been minor.
Radio blackouts reaching the R1 level occurred.No space weather storms are predicted for the next 24 hours.
https://www.sflorg.com/p/space-weather.html -
2026-05-08 00:00:00 UTC
HOW IS SPACE WEATHER NOW?
CURRENT CONDITIONS:
🟡 Solar Wind: 400.0 km/s (1 h avg)FORECAST FOR TODAY:
🟢 Radio Blackout: R0
- No effects🟢 Solar Radiation Storm: S0
- No effects🟢 Geomagnetic Storm: G0
- No effects -
The sun decided to throw a moderate tantrum earlier this week and the result was some genuinely nice aurora displays at high latitudes. Alaska, northern Canada, Iceland — people in those spots actually got to see the sky light up in full green and purple.
Meanwhile the rest of us are still refreshing apps hoping for anything more interesting than another cloudy night. Classic.
#Aurora #SolarStorm #SpaceWeather -
2026-05-07 00:00:00 UTC
HOW IS SPACE WEATHER NOW?
CURRENT CONDITIONS:
🟢 Solar Wind: 371.6 km/s (1 h avg)FORECAST FOR TODAY:
🟢 Radio Blackout: R0
- No effects🟢 Solar Radiation Storm: S0
- No effects🟢 Geomagnetic Storm: G0
- No effects -
Space Weather
All quiet again. Electron and proton levels are slightly elevated.
Need a space weather and amateur radio dashboard?
https://www.tvcomm.co.uk/g7izu/space-weather-ops/ -
#SpaceWeather #Solar #sflorg
Geophysical Alert MessageSolar-terrestrial indices for 05 May follow.
Solar flux 128 and estimated planetary A-index 12.
The estimated planetary K-index at 1200 UTC on 06 May was 1.00.No space weather storms were observed for the past 24 hours.
No space weather storms are predicted for the next 24 hours.
https://www.sflorg.com/p/space-weather.html -
2026-05-06 00:00:00 UTC
HOW IS SPACE WEATHER NOW?
CURRENT CONDITIONS:
🟢 Solar Wind: 348.8 km/s (1 h avg)FORECAST FOR TODAY:
🟢 Radio Blackout: R0
- No effects🟢 Solar Radiation Storm: S0
- No effects🟢 Geomagnetic Storm: G0
- No effects -
COMING UP: next lecture in our series “Im Feuerwerk der Sonne” on May 7th, 7 PM. Natalie Krivova from MPS Göttingen will speak about the most violent solar storms of the past 11.000 years. In German.
More here: https://www.mps.mpg.de/im-feuerwerk-der-sonne
#SpaceWeather #SolarStorms #Sonnenstürme #Sonne #Weltraumwetter #MPSGoettingen #Goettingen #PublicTalk #OeffentlicherVortrag
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The United States Magnetotelluric Array And The National Impedance Map
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https://doi.org/10.1029/2024RG000850 <-- shared paper
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https://eos.org/features/magnetic-storms-induction-hazards <-- shared ‘overview’ EOS 2014 technical article
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https://doi.org/10.3389/fspas.2025.1742847 <-- shared technical editorial
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#GIS #spatial #mapping #spaceweather #US #magnetotelluric #stations #monitoring #network #array #USMTArray #opendata #instrumentation #qualitycontrol #dataprocessing #archiving #electricalconductivity #3D #model #modeling #geology #geomagnetism #crust #mantle #CONUS #visualisation #geomagnetic #infrastructure #electricity #electricalgrid #utilities #publicgood #fedscience #fedservice #risk #hazard #mitigation #impacts #geothermal #mineralresources #exploration #magneticstorm #geoelectrichazard #earthscience #NationalImpedanceMap #conductivity #research -
2026-05-05 00:00:00 UTC
HOW IS SPACE WEATHER NOW?
CURRENT CONDITIONS:
🟡 Solar Wind: 438.0 km/s (1 h avg)FORECAST FOR TODAY:
🟢 Radio Blackout: R0
- No effects🟢 Solar Radiation Storm: S0
- No effects🟡 Geomagnetic Storm: G2
- Long storms may cook a few transformers
- Aurora is visible down to 55° GML -
Space Weather
A G2 geomagnetic storm is in progress. Aurora may be visible a high- and upper mid-latitudes.
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#SpaceWeather #Solar #sflorg
Geophysical Alert MessageSolar-terrestrial indices for 03 May follow.
Solar flux 143 and estimated planetary A-index 8.
The estimated planetary K-index at 1200 UTC on 04 May was 2.67.Space weather for the past 24 hours has been minor.
Radio blackouts reaching the R1 level occurred.No space weather storms are predicted for the next 24 hours.
https://www.sflorg.com/p/space-weather.html