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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Apr 19 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

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

Sonnenprotonen

Quiet

	10cm Fluss	Ap
19 Apr 2017	080	022
20 Apr 2017	083	007
21 Apr 2017	087	007

Bulletin

The active region that rotated over the east limb (NOAA AR 2651) has a beta-gamma magnetic field configuration and produced a C5.5 flare with peak at 20:10 UT on April 18. More C-class flares, and possibly M-class flares, can be expected.

A partial halo CME was associated with the C5.5 flare, first seen at 19:48 UT by LASCO-C2, directed towards the east with speeds around 900 km/s. Due to the location of the source region, only a shock could be expected to arrive at the Earth on April 21. Solar protons have remained at background levels over the past 24 hours.

The solar wind at the Earth is showing signs of compression preceding the expected high speed stream, with KDourbes reaching only 3 but Kp going to 5. Active to minor storm conditions expected.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 015, basierend auf 22 Stationen.

Solarindizes für den 18 Apr 2017

Wolf-Zahl Catania	///
10cm Solarflux	080
AK Chambon La Forêt	018
AK Wingst	008
Geschätzer Ap-Wert	006
Geschätzte internationale Sonnenfleckenzahl	023 - Basierend auf 30 Stationen

Zusammenfassung auffälliger Ereignisse

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

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