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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Jun 17 1234 UTC

Vorhersage des SIDC

Sonneneruptionen

Quiet conditions (<50% probability of C-class flares)

Geomagnetismus

Minor storm expected (A>=30 or K=5)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
17 Jun 2017	075	018
18 Jun 2017	074	026
19 Jun 2017	074	016

Bulletin

Two sunspot groups presently observed on the visible side of the solar disc, Catania 32 and 33 (NOAA AR 2662 and 2663) are showing signs of decay. Solar flaring activity is low with only one B-class flare reported during last 24 hours. The B1.4 flare which originated from the Catania sunspot group 33 (NOAA AR 2663) peaked at 02:57 this morning. We might expect only isolated B-class flares in the coming hours. All the observed CMEs, during the last 24 hours, were narrow and will not arrive to the Earth.

The solar wind speed is presently 440 km/s, and the interplanetary magnetic field magnitude is 6nT. The fast solar wind associated with two large coronal holes (one on the north and one on the south solar hemisphere) which reached central meridian in the evening of June 14 is expected to arrive at the Earth in the morning of June 18, inducing active to minor storm geomagnetic conditions. Geomagnetic conditions are presently unsettled to active and we expect them to stay so in the coming hours. During June 18, active to minor storm conditions are expected.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 032, basierend auf 20 Stationen.

Solarindizes für den 16 Jun 2017

Wolf-Zahl Catania	034
10cm Solarflux	074
AK Chambon La Forêt	040
AK Wingst	030
Geschätzer Ap-Wert	028
Geschätzte internationale Sonnenfleckenzahl	032 - Basierend auf 30 Stationen

Zusammenfassung auffälliger Ereignisse

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

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