M8.1 solar flare with earth-directed CME
sunnuntaina, 7. joulukuuta 2025 19.22 UTC
Sunspot region 4299 produced an M8.1 solar flare (R2-moderate) which peaked at 20:39 UTC yesterday. Type II and type IV radio emissions were registered along with coronal dimming which are all typical signs that a coronal mass ejection was launched.
Coronagraph imagery shows a faint halo coronal mass ejection (CME) which for sure has an earth-directed component. The CME has an estimated velocity of 850 km/s according to the SIDC and it suggests a possible arrival at Earth late UTC on Dec 08 to early Dec 09. The NOAA SWPC has issued a strong G3 geomagnetic storm watch for Tuesday, 9 December which might be a bit optimistic for such a ''slow'' CME but it is not ccompletely impossible if the interplanetary magnetic field (IMF) cooperates and we get a period with a prolonged southward Bz component of the IMF.
Thank you for reading this article! Did you have any trouble with the technical terms used in this article? Our help section is the place to be where you can find in-depth articles, a FAQ and a list with common abbreviations. Still puzzled? Just post on our forum where we will help you the best we can!
Uusimmat uutiset
M8.1 solar flare with earth-directed CME
X1.9 solar flare, Coronal hole faces Earth
X4.0 solar flare
Viimeisimmät foorumiviestit
Tue SpaceWeatherLive.com -sivustoa!
Monet ihmiset tulevat SpaceWeatherLiveen seuraamaan Auringon toimintaa tai olisiko mahdollisuus nähdä revontulia, mutta suuremman liikenteen myötä palvelimien ylläpitokustannukset kasvavat. Jos pidät SpaceWeatherLivestä ja haluat tukea hanketta, voit tilata mainoksettomat sivustot tai harkita lahjoitusta. Sinun avullasi voimme pitää SpaceWeatherLiven verkossa!
Avaruussäätiedot
| Viimeisin X-flare | 08/12/2025 | X1.1 |
| Viimeisin M-flare | 21/12/2025 | M1.3 |
| Viimeisin geomagneettinenmyrsky | 22/12/2025 | Kp5 (G1) |
| Pilkuttomat vuorokaudet | |
|---|---|
| Viimeisin auringonpilkuton vuorokausi | 08/06/2022 |
| Kuukausittainen auringonpilkkuluku | |
|---|---|
| marraskuuta 2025 | 91.8 -22.8 |
| joulukuuta 2025 | 115.2 +23.4 |
| Viimeiset 30 päivää | 109.1 +22.6 |