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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Feb 27 1250 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
27 Feb 2017	078	007
28 Feb 2017	077	010
01 Mar 2017	076	016

Bulletin

Solar activity was very low with no C class flares. NOAA active regions (ARs) 2638, 2639 and 2640 were stable. X-ray flux is expected to remain at background level. No Earth directed CMEs have been recorded in coronagraph data. The transequatorial extension of the negative polarity southern polar coronal hole is expected to become geoeffective around midnight 28-Feb-2017/01-March-2017. Proton flux values are expected to remain at background levels. Solar wind speed declined from around 450 km/s to around 350 km/s. Total magnetic field was in the 3:6nT range. Bz was in the -3:4nT range. Solar wind is expected to be at nominal levels over the next 24 hours before an anticipated increase late 28-Feb-2017 due to high speed stream from the negative polarity coronal hole. Geomagnetic conditions have been quiet (local K Dourbes 0-2, NOAA Kp 1-2). Over the next days, geomagnetic conditions are expected to be quiet to unsettled and increasing to quiet to active by late 28-Feb 2017 with the anticipated high speed stream.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 041, basierend auf 18 Stationen.

Solarindizes für den 26 Feb 2017

Wolf-Zahl Catania	///
10cm Solarflux	079
AK Chambon La Forêt	006
AK Wingst	002
Geschätzer Ap-Wert	001
Geschätzte internationale Sonnenfleckenzahl	032 - Basierend auf 19 Stationen

Zusammenfassung auffälliger Ereignisse

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

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