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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Apr 06 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
06 Apr 2017	083	004
07 Apr 2017	081	005
08 Apr 2017	079	005

Bulletin

Solar activity was at low levels during the period. The strongest event was a C1.1 flare peaking at 10:26UT. This flare was produced by decaying NOAA 2645. This region still has magnetic mixing in its trailing portion. The 10.7cm radio flux dropped from 94 sfu on 4 April to 85 sfu on 5 April. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10MeV proton flux was at nominal levels.

C-class flaring is expected, with a small chance on an isolated M-class flare.

Earth environment was under the influence of a moderate speed stream from a negative coronal hole. Solar wind speed gradually increased from 400 km/s at noon to 500 km/s by midnight, and has been steady since. Bz fluctuated between -7 and +4 nT. The interplanetary magnetic field was mostly directed towards the Sun.

The geomagnetic field was at quiet to unsettled levels, with an active episode during the 21-24UT interval. Quiet to unsettled conditions are expected, with a chance on an active episode.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 037, basierend auf 18 Stationen.

Solarindizes für den 05 Apr 2017

Wolf-Zahl Catania	054
10cm Solarflux	085
AK Chambon La Forêt	017
AK Wingst	012
Geschätzer Ap-Wert	011
Geschätzte internationale Sonnenfleckenzahl	052 - Basierend auf 32 Stationen

Zusammenfassung auffälliger Ereignisse

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

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