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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2015 Mar 28 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
28 Mar 2015	138	012
29 Mar 2015	137	008
30 Mar 2015	138	007

Bulletin

The solar activity remains low, as it was during the whole week, with mostly low C-class flares reported. The strongest flare reported in last 24 hours was C2.2 flare which peaked at 05:26 UT this morning. The flare originated from the Catania sunspot group 13 (NOAA AR 2305) which has slightly increased in the size and the sunspot number but has retained the beta-gamma configuration of its photospheric magnetic field. We expect C-class flares and possibly, but not probably also an isolated M-class flare. No Earth directed CMEs were observed during last 24 hours. The Earth is inside a slow solar wind with the speed of about 420 km/s. The interplanetary magnetic field has increased this morning and reached value of about 11 nT, this increase is probably due to the passage of the transient structure in the slow solar wind. At the same time the Bz component of the interplanetary magnetic field had 2 hours long interval of its negative value, amounting about -8 nT. The fast flow associated with the extend of the southern polar coronal hole might be expected in the afternoon of March 30. The geomagnetic conditions are quiet and expected to remain so in the coming hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 057, basierend auf 12 Stationen.

Solarindizes für den 27 Mar 2015

Wolf-Zahl Catania	///
10cm Solarflux	138
AK Chambon La Forêt	010
AK Wingst	010
Geschätzer Ap-Wert	008
Geschätzte internationale Sonnenfleckenzahl	077 - Basierend auf 16 Stationen

Zusammenfassung auffälliger Ereignisse

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

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