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Space Weather
Scary face crossing the sun: watch this time-lapse of coronal holes crossing the surface of the sun over the last few days.
GIF
Space Weather
Following a minor CME impact this morning which caused a little aurora over Canada and New Zealand, geomagnetic activity has dropped back again to the officially recognised level of "boring".
Solar activity is also quiet today with no flares.
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Space Weather
A red Auroral glow was also visible on a cameras in New Zealand (top of South Island) about 90 minutes ago.
Space Weather
Aurora is visible on a camera in Canada.
A minor interplanetary shock was detected in the past two hours.
https://www.europesays.com/uk/46102/ NASA scientists left baffled by eerie ‘Skull Hill’ on Mars | Science | News #Nasa #Science #Space #SpaceWeather #UK #UnitedKingdom
Space Weather
Want to learn a bit about space weather?
Get a basic insight in under 2,300 words: https://www.tvcomm.co.uk/g7izu/brief-space-weather-course/
Space Weather
A G1 geomagnetic storm is in progress, courtesy of a high-speed solar wind of 700km/s+ caused by a large coronal hole.
Aurora is being reported by amateur radio operators at high-latitudes, although the Bz (magnetic) component of the solar wind is positive (we need it negative for a good solar storm!)
Space Weather
Do you understand space weather? There are many myths and a lot of hyperbole out there which confuses peoples' conceptions and expectations.
I've just published a brief space weather course giving the facts in a concise and informative way. It should help you to understand the terms used and the processes involved in the creation of space weather.
www.tvcomm.co.ukA Brief Space Weather Course – G7IZU RRD
Space Weather
Lyrids meteor shower peaks on Tuesday
Observations of the Lyrids date back around 2,700 years meaning it is one of the oldest-known meteor showers.
The fireballs are created by debris from Comet Thatcher, which takes more than 400 years to orbit the Sun and was discovered in 1861 by A. E. Thatcher.
They are named after the constellation Lyra and the radiant position, which is where the meteors appear to emanate from, is south-west of the star Vega.
Read more:
https://www.bbc.co.uk/weather/articles/ce840rlve0eo
BBC WeatherLyrid meteor shower: How and when to see it in the UK skyVisible for a few days in April, the Lyrids are set to peak on the 22nd.
Space Weather
A strong geomagnetic substorm just started. Aurora may be visible over the whole UK.
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Space Weather
The M4.4 flare last night at 23h52 UT 18 Apr produced an impressive CME that went sharply southwards!
Space Weather
Solar flare alert: An M4.4 flare peaked at 23h52 UT 18 Apr. A type II radio emission was observed.
This was the first significant flare in five days, and it originated from a new active region emerging on the east limb.
(@)sssweather(@)universeodon.com:
Latest micro-events (12h) (server2) (also follow sssweather_test) #suninfo #solarinfo #spaceweather #solarflare
Universeodon Social Media@sssweather (@sssweather@universeodon.com)Attached: 1 image
Latest micro-events (12h) (server2) (also follow sssweather_test) #suninfo #solarinfo #spaceweather #solarflare
Space Weather
Aurora Alert: Mid-latitude aurora is being reported by amateur radio operators down to ~49°N over Europe.
Caveat: I'm not currently seeing this activity reflected in actual geomagnetic data.
Follow live: https://www.tvcomm.co.uk/g7izu/radio-propagation-maps/auroral-propagation/
Space Weather
From @TamithaSkov on the Twitsite:
"Multiple investigators asking me whether the ongoing #PuertoRico power #blackout was #solarstorm related. At the present time I cannot exclude the possibility that geomagnetically induced currents (GICs) played a role. The power failure occurred within several hours of the storm peak at G4-levels yesterday.
That coupled with the fragility of the grid and the increased power consumption expected during the daytime hours (it was 12:40p local time), means the grid was stressed in multiple ways. Since transformer heating from GICs is a slow process, the several-hour delay from the peak storm intensity is consistent. This is a troubling development."
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As was likely to be the case, yesterday's surprise geomagnetic storm did not last long enough to be seen in my region's nighttime. But on the other side of the world some people got pictures while it happened. https://www.spaceweather.gov/communities/aurora-dashboard-experimental #SpaceWeather #aurora #AuroraBorealis #AuroraAustralis #astronomy
Space Weather
Geomagnetic conditions have calmed down following two days of storming. This was a rare event which saw kP levels reaching 8-9 (G4) for a brief time yesterday. Auroras were seen far down into southern Europe.
The sun is also quiet again with no flares of note during the last 48 hours.
Space Weather Message Code: ALTK08
Serial Number: 50
Issue Time: 2025 Apr 16 2054 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2025 Apr 16 2055 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.
- Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
- Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
- Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
- Radio - HF (high frequency) radio propagation sporadic or blacked out.
- Aurora - Aurora may be seen as low as Alabama and northern California. #spaceweather
https://www.spaceweather.gov/
www.spaceweather.govHomepage | NOAA / NWS Space Weather Prediction Center