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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2019 Aug 12 1233 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
12 Aug 2019	068	006
13 Aug 2019	067	006
14 Aug 2019	067	004

Bulletin

Solar activity was at very low levels. The Sun was spotless. No Earth-directed coronal mass ejections (CME) were observed during the period. The greater than 10 MeV proton flux was at nominal values.

Solar activity is expected to remain at very low levels.

The solar wind speed decreased from values near 475 km/s to a minimum of 360 km/s around 4 UT (ACE) before gradually increasing again, due to the solar wind stream from the fragmented negative polarity coronal hole which began to traverse the central meridian on 7 August. Bz varied between -4 and +6 nT. The interplanetary magnetic field (phi angle) was predominately oriented away from the Sun (positive sector) until 3 UT when it switched to the negative sector.

Quiet to unsettled geomagnetic conditions were observed. Quiet to unsettled geomagnetic conditions are expected over the next 24 hours due to the ongoing influence of the wind stream associated with the negative polarity coronal hole.

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

Solarindizes für den 11 Aug 2019

Wolf-Zahl Catania	///
10cm Solarflux	068
AK Chambon La Forêt	012
AK Wingst	008
Geschätzer Ap-Wert	007
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 27 Stationen

Zusammenfassung auffälliger Ereignisse

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

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