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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2019 Jul 23 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
23 Jul 2019	068	007
24 Jul 2019	068	008
25 Jul 2019	068	008

Bulletin

The solar activity has been quiet over the past 24 hours. The small bipolar sunspot on the solar disc (NOAA Active region 2745, Catania sunspot group 21) has decayed and disappeared. The sun is currently spotless and the X-ray flux remained below B-level. Solar activity is expected to remain at low levels for the next 24 hours.

No Earth directed coronal mass ejections (CME) were observed over the last 24 hours in the available coronagraph imagery. The greater than 10 MeV proton flux remained at background levels over the past 24 hours and is expected to remain at low levels.

The solar wind speed was stable with values around 400 km/s (ACE). The total interplanetary magnetic field remained below 7 nT , the Bz component varied between -4 nT and +5 nT. The solar wind parameters might show some small enhancement for the coming days due to the possible effect of the South pole coronal hole wind streams.

Quiet to unsettle geomagnetic conditions were observed with the Kp index (NOAA) ranging between 1-2 and the local K index (Dourbes) ranging between 1-3 over the past 24 hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 22 Stationen.

Solarindizes für den 22 Jul 2019

Wolf-Zahl Catania	014
10cm Solarflux	067
AK Chambon La Forêt	016
AK Wingst	010
Geschätzer Ap-Wert	010
Geschätzte internationale Sonnenfleckenzahl	013 - Basierend auf 25 Stationen

Zusammenfassung auffälliger Ereignisse

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

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