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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2014 Nov 20 1156 UTC

Vorhersage des SIDC

Sonneneruptionen

Eruptive (C-class flares expected, probability >=50%)

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
20 Nov 2014	175	013
21 Nov 2014	180	012
22 Nov 2014	185	012

Bulletin

Three C-class flares were reported during the past 24 hours. The two weaker ones (C2.4 and C2.6 yesterday evening) were produced by the NOAA AR 2209. The strongest flare (C7.6 peaking at 06:41 UT today) was produced by a large unnumbered sunspot group that just appeared from behind the east limb. We expect this group to produce more C-class flares, possibly with an isolated M-class flare. NOAA AR 2209 started to decay in area and in number of sunspots, although it still maintains the beta-gamma-delta configuration of its photospheric magnetic field. We expect C-class flares from this region, with an M-class flare possible but unlikely. The Earth is currently inside a slow (around 400 km/s) solar wind flow with slightly elevated interplanetary magnetic field (IMF) magnitude (6-7 nT). Due to this slight elevation of the IMF magnitude, one interval of K = 4 was reported by IZMIRAN and NOAA in the past 24 hours. The K-index measurements by Dourbes remained at the quiet to unsettled levels (K < 4). We expect quiet to unsettled (K < 4) geomagnetic conditions to persist, possibly with isolated intervals of active (K = 4) conditions.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 044, basierend auf 10 Stationen.

Solarindizes für den 19 Nov 2014

Wolf-Zahl Catania	///
10cm Solarflux	170
AK Chambon La Forêt	014
AK Wingst	012
Geschätzer Ap-Wert	010
Geschätzte internationale Sonnenfleckenzahl	058 - Basierend auf 10 Stationen

Zusammenfassung auffälliger Ereignisse

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

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