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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2016 May 19 1230 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
19 May 2016	102	011
20 May 2016	100	008
21 May 2016	098	007

Bulletin

Over the past 24 hours solar activity has been low. The largest flare was a B5.1 class flare, produced by Active Region (AR) 2544 (Macintosh class:Cso; Mag. type:Beta). All other ARs have been quiet. AR 2544 has exhibited some flux emergence and cancellation in HMI observations, which may lead to further flares. Solar protons have remained at background levels over the past 24 hours. Solar activity is expected to remain low over the next 24 hours with a small probability of C-class flares. The solar wind speed has remained around 450 km/s over the past 24 hours. The total magnetic field strength has fluctuated around 5 nT. The Bz component fluctuated between -5 and +5 nT, but has been mainly positive. Geomagnetic conditions ranged between Kp index 1-3 (NOAA) and local K index 1-3 (Dourbes) over the past 24 hours. A large Northern positive polar coronal hole is currently positioned in the Western hemisphere of the Sun and may enhance solar wind speeds at the Earth. The CME produced at 15:24 UT on 15-May-2016 has shown no influence at the Earth.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 047, basierend auf 20 Stationen.

Solarindizes für den 18 May 2016

Wolf-Zahl Catania	046
10cm Solarflux	102
AK Chambon La Forêt	010
AK Wingst	010
Geschätzer Ap-Wert	010
Geschätzte internationale Sonnenfleckenzahl	032 - Basierend auf 25 Stationen

Zusammenfassung auffälliger Ereignisse

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

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