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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2015 Jul 24 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
24 Jul 2015	091	013
25 Jul 2015	094	018
26 Jul 2015	097	009

Bulletin

There are currently 4 small sunspot groups visible on the solar disk. NOAA 2389, still close to the southeast limb, seems to show some mixed magnetic polarities. It was the source of the sole C-class flare of the period (C1.0 at 03:12UT). No earth-directed coronal mass ejections (CMEs) were observed.

There's a chance on another isolated C-class flare.

Solar wind speed gradually declined from values between 500 and 550 km/s to its current 400 km/s. Bz fluctuated between -8 and +6 nT. Active episodes were observed between 17:00-21:00UT. A small equatorial positive coronal hole is transiting the central meridian.

Mostly quiet to unsettled geomagnetic conditions are expected, with a chance on an active period in response to the high speed stream from the positive CH on the northern hemisphere.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 037, basierend auf 15 Stationen.

Solarindizes für den 23 Jul 2015

Wolf-Zahl Catania	029
10cm Solarflux	089
AK Chambon La Forêt	021
AK Wingst	023
Geschätzer Ap-Wert	019
Geschätzte internationale Sonnenfleckenzahl	033 - Basierend auf 29 Stationen

Zusammenfassung auffälliger Ereignisse

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

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