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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2019 Sep 25 1230 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
25 Sep 2019	067	009
26 Sep 2019	067	007
27 Sep 2019	066	017

Bulletin

Solar X-ray flux remained below B class levels throughout the period. The Solar disk is spotless and the X-ray flux is expected to remain at or below background levels.

There were no Earth-directed Coronal Mass Ejections (CME) observed in coronagraph data.

Proton levels were at background values and are expected to remain so.

The solar wind speed has fluctuated between 350 and 500 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 2 and 17 nT peaking at 17:00 UT yesterday. The Bz between -9 and 15 nT. Geomagnetic conditions ranged between Kp index 1-4 (NOAA) and local K index 0-3 (Dourbes).

The solar wind conditions became enhanced late yesterday and early this morning due to the arrival of a high speed stream (HSS) from a recurrent equatorial coronal hole. Solar wind conditions are expected to be enhanced throughout the day, before abating later today / early tomorrow. As a consequence geomagnetic conditions are expected to be unsettled, with some active periods due to HSS solar wind enhancements.

Around 27-Sep-2019 we may begin to feel the effects from a second larger recurrent coronal hole, which has just passed the central meridian. On the coronal holes last rotation the resultant HSS produced Kp 6 (NOAA).

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

Solarindizes für den 24 Sep 2019

Wolf-Zahl Catania	///
10cm Solarflux	067
AK Chambon La Forêt	015
AK Wingst	014
Geschätzer Ap-Wert	013
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 18 Stationen

Zusammenfassung auffälliger Ereignisse

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

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