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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2024 Jul 20 1231 UTC

Vorhersage des SIDC

Sonneneruptionen

M-class flares expected (probability >=50%)

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
20 Jul 2024	206	006
21 Jul 2024	200	004
22 Jul 2024	195	004

Solaraktive Regionen und Flares

Solar flaring activity was moderate with three M-class flares detected during the past 24 hours. NOAA Active Region (AR) 3751 (magnetic type Beta-Gamma-Delta, Catania sunspot group no 12) produced an M2.0 at 19 Jul 18:06 UTC and an M1.8 at 20 Jul 07:20. NOAA AR 3758 (magnetic configuration Beta, Catania sunspot group 93) emitted an M1.0 at 19 Jul 22:51 UTC. NOAA AR 3745 (magnetic configuration Beta, Catania sunspot group no 5) produced the brightest C-class flare of the past 24 hours, a C9 at 20 Jul 00:24 UTC. For the next 24 hours further M-class activity is very likely, and there is a chance of an X-class flare mostly from NOAA AR 3751.

Koronaler Massenauswurf

No Earth-directed Coronal Mass Ejections (CME) were observed in the last 24 hours.

Sonnenwind

Solar Wind (SW) conditions remained typical of the slow SW regime during the past 24 hours. The SW speed varied between 310 and 400 km/s, while the total interplanetary magnetic field (Bt) ranged between 1 and 10 nT during the past 24 hours. The North-South magnetic component (Bz) fluctuated between -5 and 6 nT, while the interplanetary magnetic field phi angle was directed away and towards the Sun for an almost equal length of time in the past 24 hours. The SW conditions are expected to follow the same pattern for the next 24 hours.

Geomagnetismus

Geomagnetic conditions were globally and locally quiet during the past 24 hours (NOAA Kp 1+ to 2+ and K BEL 2). They are expected to continue at quiet levels in the next 24 hours.

Protonenflusswerte

The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is likely to remain so. Nevertheless, there is a chance of a proton event associated with the activity of NOAA active region 3751.

Elektronenflüsse im geostationären Orbit

The greater than 2 MeV electron flux, as measured by the GOES-16 satellite, was at nominal levels during the last 24 hours and is expected to remain at these levels during the next 24 hours. The 24h electron fluence was at very low levels during the past 24 hours and is expected to remain at these levels for the following 24 hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 234, basierend auf 13 Stationen.

Solarindizes für den 19 Jul 2024

Wolf-Zahl Catania	333
10cm Solarflux	202
AK Chambon La Forêt	012
AK Wingst	006
Geschätzer Ap-Wert	006
Geschätzte internationale Sonnenfleckenzahl	277 - Basierend auf 26 Stationen

Zusammenfassung auffälliger Ereignisse

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

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