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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2020 Jul 24 1246 UTC

Vorhersage des SIDC

Sonneneruptionen

Quiet conditions (<50% probability of C-class flares)

Geomagnetismus

Active conditions expected (A>=20 or K=4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
24 Jul 2020	070	010
25 Jul 2020	070	011
26 Jul 2020	070	003

Bulletin

Solar flaring activity was at very low levels. No significant flares have been recorded. Solar activity is expected to remain at low levels.

No Earth directed Coronal Mass Ejections (CMEs) were observed in the available coronagraphic imagery.

The greater than 10 MeV proton flux was at background levels the past 24 hours. It is expected to remain so in the next 24 hours. The greater than 2 MeV electron flux was at moderate levels over the past 24 hours. It expected to start increasing from the next 24 hours, as a possible response to the influence of the CME taking place on July 20th.

The solar wind speed near Earth slightly increased, varying between 295 and 370 km/s (DSCOVR). The polarity of the Interplanetary Magnetic Field (IMF) switched from being oriented away the Sun to towards (phi angle switched from the positive to the negative sector). Bz fluctuated between -10 and +10 nT. The magnitude of the magnetic field varied between 0 and 11 nT. The solar wind properties are indicating effects from the arrival either of the High Speed Stream from the Coronal Hole crossing Central Meridian late July 19th or early arrival of the CME on July 20th. More information will be given when more data are availalble.

The geomagnetic conditions were quiet to unsettled. The values registered for the past 24 hours were 0-3 for K Dourbes and NOAA Kp. Quiet to unsettled, with a chance of an isolated active period (K Dourbes = 4), geomagnetic conditions are expected for the next 24 hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 010, basierend auf 11 Stationen.

Solarindizes für den 23 Jul 2020

Wolf-Zahl Catania	011
10cm Solarflux	070
AK Chambon La Forêt	008
AK Wingst	004
Geschätzer Ap-Wert	003
Geschätzte internationale Sonnenfleckenzahl	010 - Basierend auf 33 Stationen

Zusammenfassung auffälliger Ereignisse

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

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