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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2015 Mar 04 1225 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
04 Mar 2015	123	016
05 Mar 2015	127	018
06 Mar 2015	130	014

Bulletin

The strongest event of the period was a C4 flare peaking at 13:37UT being produced by NOAA 2290 from behind the NW limb. NOAA 2292 lost its delta, but still has some mixed polarities. The region produced 2 low- level C-class flares. An active region that has been the source of some strong CMEs over the last few days will round the SE limb within the next 1-2 days. No Earth-directed CMEs were observed. C-class flaring is expected. Geomagnetic conditions ranged from quiet to unsettled, with locally (Dourbes) an active episode at the end of the period. Earth has left the high speed stream from the southern polar CH. Solar wind speed gradually decreased from about 500 km/s to a steady 450 km/s after 22:00UT. Since 08:00UT, IMF direction seems to have changed from towards to away, and Bz started to oscillate between -8 and +8 nT. This may be in response to an anticipated sector boundary crossing. A positive CH is transiting the CM and may influence the geomagnetic field around 7 March. Quiet to active geomagnetic conditions are expected.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 036, basierend auf 18 Stationen.

Solarindizes für den 03 Mar 2015

Wolf-Zahl Catania	050
10cm Solarflux	125
AK Chambon La Forêt	021
AK Wingst	014
Geschätzer Ap-Wert	015
Geschätzte internationale Sonnenfleckenzahl	033 - Basierend auf 20 Stationen

Zusammenfassung auffälliger Ereignisse

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

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