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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2023 Aug 21 1231 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
21 Aug 2023	146	007
22 Aug 2023	148	007
23 Aug 2023	150	007

Solaraktive Regionen und Flares

There are seven active regions visible on the disk. They all have simple alpha or beta magnetic field configuration. Only C-class flares have occurred in the last 24 hours. The largest flare was a C4.4 flare peaking at 07:53 UTC, from a region rotating into view from the east limb. C-class flares are expected and M-class flares are possible (mostly from the new region), for the next 24 hours.

Koronaler Massenauswurf

There were no Earth-directed Coronal Mass Ejections (CMEs) detected in the available coronagraph observations in the last 24 hours.

Sonnenwind

The Earth is inside a fast solar wind stream, with speeds around 600 km/s and an interplanetary magnetic field around 5 nT. The interplanetary magnetic field orientation was predominantly in the negative sector (field directed towards the Sun). The solar wind is expected to gradually decrease its speed in the coming days.

Geomagnetismus

During the last 24 hours the geomagnetic conditions were at quiet to unsettled levels (NOAA KP 1-3, K Bel 1-3). Geomagnetic conditions are expected to be at unsettled levels, with isolated active periods possible due to the ongoing high speed stream influence.

Protonenflusswerte

Over the past 24 hours the greater than 10 MeV GOES proton flux was at nominal levels and is expected to remain so over the next days.

Elektronenflüsse im geostationären Orbit

The greater than 2 MeV electron flux remained below the 1000 pfu threshold as measured by GOES 16. It may increase above this threshold in the next 24 hours. The 24 hour electron fluence was at normal levels and is expected to remain so.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 111, basierend auf 20 Stationen.

Solarindizes für den 20 Aug 2023

Wolf-Zahl Catania	///
10cm Solarflux	146
AK Chambon La Forêt	013
AK Wingst	012
Geschätzer Ap-Wert	012
Geschätzte internationale Sonnenfleckenzahl	106 - Basierend auf 29 Stationen

Zusammenfassung auffälliger Ereignisse

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

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