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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2024 Mar 21 1232 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
21 Mar 2024	181	007
22 Mar 2024	178	003
23 Mar 2024	175	003

Solaraktive Regionen und Flares

During the last 24 hours the solar flaring activity was moderate with an M1 flare produced by NOAA Active Region (AR) 3615 (magnetic configuration Beta-Gamma-Delta, Catania sunspot group 22) yesterday 22:55 UTC. The same AR produced all the C-class flaring of the last 24 hours and it has now started to decay. Isolated M-class flaring activity is possible in the next 24 hours, mostly from NOAA AR 3615.

Koronaler Massenauswurf

No Earth-directed Coronal Mass Ejections (CME) were observed in the last 24 hours. A partial halo CME launched yesterday at 17:36 UTC can been seen in LASCO-C2/SOHO images. It is estimated to be a back-sided event and hence not geo-effective.

Koronale Löcher

A southern, negative polarity Coronal Hole (CH) is currently crossing the solar central meridian. A High Speed Stream (HSS) associated with this CH is expected to affect the Earth's environment on Mar 24.

Sonnenwind

During the past 24 hours the Solar Wind (SW) conditions were affected by the expected arrival of a Coronal Mass Ejection (CME) today at 01:50 UTC. The SW speed increased from 300 to 400 km/s as a result of the arrival, while the total interplanetary magnetic field (Bt) raised from 1 to 15 nT. The North-South magnetic component (Bz) ranged between -11 and 8 nT, while the interplanetary magnetic field phi angle changed from being directed towards the Sun to be directed away from the Sun. The effects of the CME are expected to wane in the next 24 hours and the conditions to return to a slow SW regime.

Geomagnetismus

During the last 24 hours, geomagnetic conditions were globally and locally quiet to unsettled (NOAA Kp 0+ to 3+ and K BEL 1 to 3) as a result of the arrival of a Coronal Mass Ejection (CME) today 01:50 UTC. In the next 24 hours they are expected to drop to quiet levels.

Protonenflusswerte

The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is likely 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 at nominal levels during the last 24 hours and is expected to remain below this threshold 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): 174, basierend auf 08 Stationen.

Solarindizes für den 20 Mar 2024

Wolf-Zahl Catania	147
10cm Solarflux	176
AK Chambon La Forêt	013
AK Wingst	006
Geschätzer Ap-Wert	005
Geschätzte internationale Sonnenfleckenzahl	126 - Basierend auf 20 Stationen

Zusammenfassung auffälliger Ereignisse

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

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