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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2015 Feb 06 1231 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
06 Feb 2015	142	006
07 Feb 2015	142	007
08 Feb 2015	146	007

Bulletin

Solar activity was low, with only a couple of isolated low level C flares. The strongest one originated from NOAA region 2280 (Catania 82) peaking at 10:17 UT at C1.4 level only. A new spotted region started to appear near S10W45. We expect some further C flaring, mainly from NOAA regions 2277 and 2280. Incomplete SOHO LASCO coronagraph data so far seem to indicate that the filament eruptions of February 4 did not result in Earth directed CMEs. Solar wind conditions showed a sector boundary crossing with the magnetic field phi angle completing the shift which was started in the previous reporting period and settling on a firmly positive value during the present reporting period. Associated with this shift the total magnetic field increased from levels around 3.5 nT to values in the 6-8 nT range. Bz was variable with negative peaks down to -6.4 nT. Solar wind speed remained in the 400 to 450 km/s range. Geomagnetic conditions were quiet to active (both NOAA Kp and local K Dourbes 1-4), with the active period associated to the sector boundary crossing. Similar solar wind conditions are expected to persist, with associated quiet to unsettled geomagnetic conditions.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 065, basierend auf 12 Stationen.

Solarindizes für den 05 Feb 2015

Wolf-Zahl Catania	///
10cm Solarflux	142
AK Chambon La Forêt	014
AK Wingst	014
Geschätzer Ap-Wert	013
Geschätzte internationale Sonnenfleckenzahl	066 - Basierend auf 16 Stationen

Zusammenfassung auffälliger Ereignisse

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

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