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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2019 Jul 21 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
21 Jul 2019	067	005
22 Jul 2019	068	003
23 Jul 2019	068	009

Bulletin

Solar activity was at very low levels. The Sun remains spotless and no flares have been observed. 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. Solar activity is expected to remain at very low levels.

The solar wind speed varied between 315 and 370 km/s (ACE). The Bz varied between -4 and +3 nT. The interplanetary magnetic field was predominantly directed away from the Sun (positive sector). Quiet to unsettled geomagnetic conditions were observed, with the Kp index (NOAA) ranging between 1-2 and the local K index (Dourbes) ranging between 0-3 over the past 24 hours.

Quiet geomagnetic conditions are expected to continue for July 21 and 22 with unsettled conditions on July 23 due to the influence of the solar wind stream originating from the extension of the southern polar coronal hole, which traversed the central meridian on July 19.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 21 Stationen.

Solarindizes für den 20 Jul 2019

Wolf-Zahl Catania	///
10cm Solarflux	067
AK Chambon La Forêt	006
AK Wingst	003
Geschätzer Ap-Wert	003
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 21 Stationen

Zusammenfassung auffälliger Ereignisse

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

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