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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Nov 17 1258 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
17 Nov 2017	075	012
18 Nov 2017	076	010
19 Nov 2017	076	012

Bulletin

Solar flaring activity is low, with only few low B-class flares reported. All reported flares originated from the Catania sunspot group 63 (NOAA AR 2687) which maintains the beta configuration of its photospheric magnetic field. We do not expect significant change of flaring activity in the coming hours. During last 24 hours there were no Earth directed CMEs reported, and the solar protons remained at background level. The solar wind speed presently amounts about 430 km/s (its maximum value within the last 24 hours was about 510 km/s). The interplanetary magnetic field magnitude is stable having the value of about 4 nT. The fast solar wind associated with the equatorial coronal hole which reached central meridian in the early morning of November 16 is expected to arrive at the Earth on November 19. The fast flow associated with the low latitude extension of the southern polar coronal hole (reached central meridian in the late evening of November 13) is expected to arrive at the Earth this evening. The geomagnetic conditions are presently quiet to unsettled, we expect unsettled to active geomagnetic conditions later today due to the arrival of the fast solar wind.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 024, basierend auf 22 Stationen.

Solarindizes für den 16 Nov 2017

Wolf-Zahl Catania	019
10cm Solarflux	073
AK Chambon La Forêt	014
AK Wingst	016
Geschätzer Ap-Wert	016
Geschätzte internationale Sonnenfleckenzahl	017 - Basierend auf 18 Stationen

Zusammenfassung auffälliger Ereignisse

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

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