Archiv von Montag, 9 April 2018 anzeigen

Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2018 Apr 09 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Minor storm expected (A>=30 or K=5)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
09 Apr 2018	068	017
10 Apr 2018	069	016
11 Apr 2018	069	012

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.

On April 8, the solar wind speed was fluctuating between 340 and 370 km/s, the total magnetic field strength remained below 5 nT, and the Bz component was ranging between -5 and +4.5 nT. On April 9 around 00:00 UT, the solar wind measurements indicated the onset of a Corotating Interaction Region (CIR) announcing the soon arrival of the solar wind High Speed Stream (HSS) associated with the Coronal Hole (which has crossed the central meridian on April 5). The wind speed shows a gradual increase from the nominal values to the current values ranging from 460 to 470 km/s, the total magnetic field strength reached 8.8 nT and Bz component -5.5 nT. The enhanced solar wind conditions are expected to persist for the next 24-hours period and until the influence of the HSS associated with the coronal hole decay.

Geomagnetic conditions ranged between Kp index 1-3 (NOAA) and local K index 1-3 (Dourbes) over the past 24 hours. Due to the ongoing enhancement of the solar wind, disturbed Geomagnetic conditions are expected, minor to moderate geomagnetic storms cannot be excluded, especially if Bz component remains negative for long period of time.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 13 Stationen.

Solarindizes für den 08 Apr 2018

Wolf-Zahl Catania	///
10cm Solarflux	068
AK Chambon La Forêt	012
AK Wingst	008
Geschätzer Ap-Wert	006
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 33 Stationen

Zusammenfassung auffälliger Ereignisse

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

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