Archiv von Sonntag, 10 September 2023 anzeigen

Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2023 Sep 10 1244 UTC

Vorhersage des SIDC

Sonneneruptionen

C-class flares expected, (probability >=50%)

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
10 Sep 2023	160	006
11 Sep 2023	156	007
12 Sep 2023	150	007

Solaraktive Regionen und Flares

During last 24 hours solar flaring activity has decreased and only a few C-class flares were reported. The strongest reported flare was GOES C8.3 flare which peaked at 01:55 UT on September 10. The flare originated from the Catania sunspot group 44 (NOAA AR 3423) which somewhat decreased in the complexity of its photospheric magnetic field and it has presently beta configuration. The EUV observations show that the flare was associated with the eruption, but as the coronagraph data are not yet available it is not possible to estimate if the associated CME will be Earth directed. More will be reported when data become available. All the numbered active regions have presently beta configuration of their photospheric magnetic field. We can expect C-class flares in the coming hours while isolated M-class flares are possible but not very probable.

Koronaler Massenauswurf

Presently available observations do not show any Earth directed CME.

Koronale Löcher

Two narrow and elongated coronal holes started to cross the central meridian today, one at the Northern and another one at Southern solar hemisphere. The coronal hole at the Northern hemisphere has positive polarity and the one at Southern hemisphere is somewhat smaller and it has negative polarity. The solar wind associated with these coronal holes can be expected at Earth starting from the afternoon of September 13.

Sonnenwind

Earth is still inside the slow solar wind with the solar wind plasma characteristics fluctuating very little during the last 24 hours. The solar wind velocity remained to be about 330 km/s and the interplanetary magnetic field magnitude is about 6 nT.

Geomagnetismus

During last 24 hours the geomagnetic conditions were quiet and we expect them to stay so in the coming hours.

Protonenflusswerte

The greater than 10 MeV proton flux was at the background levels and we do not expect significant change in the coming hours.

Elektronenflüsse im geostationären Orbit

The greater than 2 MeV electron flux still fluctuates around the 1000 pfu threshold. The 24h electron fluence is at normal level. We do not expect significant change in the coming hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 191, basierend auf 20 Stationen.

Solarindizes für den 09 Sep 2023

Wolf-Zahl Catania	///
10cm Solarflux	161
AK Chambon La Forêt	010
AK Wingst	009
Geschätzer Ap-Wert	008
Geschätzte internationale Sonnenfleckenzahl	144 - Basierend auf 27 Stationen

Zusammenfassung auffälliger Ereignisse

Zur Verfügung gestellt vom Solar Influences Data Analysis Center© - SIDC - Verarbeitet von SpaceWeatherLive

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