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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2024 Jan 28 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
28 Jan 2024	149	005
29 Jan 2024	140	014
30 Jan 2024	135	020

Solaraktive Regionen und Flares

Solar flaring activity was low but frequent during the last 24 hours, with the brightest flares being C2. NOAA Active Region (AR) 3561 (now behind the solar limb) produced most of the activity, followed by NOAA AR 3559 (magnetic configuration Beta-Gamma, Catania sunspot group 43). The C-class flaring activity is expected to continue in the next 24 hours, mostly from NOAA AR 3559 and the three yet- unnamed AR currently turning to Earth's view.

Koronaler Massenauswurf

No Earth directed Coronal Mass Ejections (CME) have been observed in the available coronagraph data. Two partial halo CME automatically detected by CATCus as launched yesterday 15:24 UTC and today 03:12 UTC are associated with flaring activity at the East limb and are not expected to be geo-effective.

Sonnenwind

The Solar Wind (SW) conditions of the last 24 hours are typical of the slow wind regime. A glancing blow from the passing of a Coronal Mass Ejection (CME) nearby only caused a very minor effect this morning, as predicted. The SW speed ranged between 330 km/s and 420 km/s, while the total interplanetary magnetic field (Bt) varied between 3 and 11 nT and its North-South component ranged between -3 and 8 nT. The interplanetary magnetic field phi angle changed from mostly being directed towards the Sun yesterday to away from the Sun today. The SW conditions are expected to be affected by the arrival of a High Speed Stream (HSS) within the next 24 hours.

Geomagnetismus

Geomagnetic conditions were globally and locally quiet (NOAA Kp 1- to 2 and K BEL 1 to 2) during the last 24 hours. They are likely to increase to unsettled or active levels as a High Speed Stream (HSS) is likely to arrive in next 24 hours.

Protonenflusswerte

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

Elektronenflüsse im geostationären Orbit

The greater than 2 MeV electron flux, as measured by the GOES-16 satellite, was well below the 1000 pfu alert threshold during the last 24 hours and is expected to to remain at this level during the next 24 hours. The 24h electron fluence was at 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): 070, basierend auf 16 Stationen.

Solarindizes für den 27 Jan 2024

Wolf-Zahl Catania	///
10cm Solarflux	148
AK Chambon La Forêt	007
AK Wingst	004
Geschätzer Ap-Wert	003
Geschätzte internationale Sonnenfleckenzahl	063 - Basierend auf 20 Stationen

Zusammenfassung auffälliger Ereignisse

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

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