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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2013 Jul 25 1302 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

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

Sonnenprotonen

Quiet

	10cm Fluss	Ap
25 Jul 2013	110	011
26 Jul 2013	112	015
27 Jul 2013	115	003

Bulletin

During the last 24 hours, Catania sunspot group 35 (NOAA AR 1800) produced three weak C-class flares, the strongest one being the C1.8 flare peaking at 21:43 UT yesterday. We expect more C-class flares in this group, but the probability for flaring at the M-level is low. A filament eruption at the solar central meridian (between Catania sunspot groups 35 and 44) starting around 02:00 UT today was accompanied by coronal dimmings and a post- eruption arcade, as shown by the SDO/AIA data. However, no corresponding CME was detected by SOHO/LASCO or STEREO/COR. The Earth is currently inside a slow (around 320 km/s) solar wind flow with average (around 5 nT) interplanetary magnetic field magnitude. We expect quiet geomagnetic conditions until the arrival of the interaction region between the slow and fast solar wind flows later today (followed by the fast flow from the equatorial coronal hole), which may result in active geomagnetic conditions.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 058, basierend auf 18 Stationen.

Solarindizes für den 24 Jul 2013

Wolf-Zahl Catania	090
10cm Solarflux	108
AK Chambon La Forêt	007
AK Wingst	006
Geschätzer Ap-Wert	005
Geschätzte internationale Sonnenfleckenzahl	047 - Basierend auf 20 Stationen

Zusammenfassung auffälliger Ereignisse

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

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