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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2018 Apr 12 1232 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 Apr 2018	068	009
13 Apr 2018	067	008
14 Apr 2018	067	007

Bulletin

The solar activity has been quiet over the past 24 hours. The visible solar disc is spotless and no flare has been recorded. Quiet flaring conditions are expected for the next 24-hour period.

No Earth directed Coronal Mass Ejection has been observed. The greater than 10 MeV solar protons flux remained at nominal levels over the past 24 hours and is expected to remain so.

The Earth remains affected by the solar wind connected to the equatorial coronal hole (which has crossed the central meridian on April 05). The solar wind speed has stabilized around 510-530 km/s over the past 24 hours. The total magnetic field strength remained below 5 nT, and the Bz component was fluctuating between -5 and +5 nT. The enhanced solar wind conditions are expected to persist for the next 24-hour period and until the influence of the HSS associated with the coronal hole decay.

Geomagnetic conditions have been unsettled over the past 24 hours: Kp index was observed ranging between 0-3 (NOAA), and local K index between 0-2 (Dourbes) over the past 24 hours. Due to the ongoing enhancement of the solar wind, unsettled geomagnetic conditions are expected, short episode of active geomagnetic conditions cannot be excluded, especially if the total magnetic field strength slightly increased and the Bz component remains negative for long period of time.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 007, basierend auf 13 Stationen.

Solarindizes für den 11 Apr 2018

Wolf-Zahl Catania	///
10cm Solarflux	068
AK Chambon La Forêt	013
AK Wingst	011
Geschätzer Ap-Wert	012
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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