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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2018 Apr 19 1231 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Active conditions expected (A>=20 or K=4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
19 Apr 2018	071	007
20 Apr 2018	073	016
21 Apr 2018	072	007

Bulletin

During last 24 hours only few low B-class were reported. All flaring activity originated from the active region which is rotating from the behind of the East solar limb. This active region might be the source of B-class and isolated C-class flares in the coming hours. The coronagraph images do not show signatures of a possibly Earth directed CME. The solar protons remain at the background level.

The solar wind speed is about 280 km/s and the interplanetary magnetic field magnitude is rather low with the value of about 2 nT. The increase of the solar wind speed, associated with equatorial coronal hole which reached central meridian on April 16 is expected later today, or tomorrow morning. The geomagnetic conditions are presently quiet. We expect quiet to unsettled conditions later today and possibly active geomagnetic conditions tomorrow.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 007, basierend auf 27 Stationen.

Solarindizes für den 18 Apr 2018

Wolf-Zahl Catania	///
10cm Solarflux	071
AK Chambon La Forêt	010
AK Wingst	006
Geschätzer Ap-Wert	006
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 29 Stationen

Zusammenfassung auffälliger Ereignisse

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

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