Archiv von Sonntag, 23 Februar 2014 anzeigen

Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2014 Feb 23 1335 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Minor storm expected (A>=30 or K=5)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
23 Feb 2014	163	021
24 Feb 2014	169	019
25 Feb 2014	174	007

Bulletin

Solar activity has been dominated by NOAA AR 1982 with several C-class flares and by recurrent AR NOAA 1967 slightly behind the east limb. This AR produced a long duration M1.0 flare with peak at 06:10 UT, related to a non-Earth directed CME. A second partial halo came from this AR at 16:00 UT on February 22, also not expected to affect the Earth. As this region rotates into view in next 24 - 48 h solar activity is expected to increase. A third partial halo CME was seen at 12:12 UT on February 22 by LASCO-C2, this one corresponded to a backside filament eruption in the south, not Earth directed. A weak transient arrived to ACE around 02:30 UT related most likely to the CMEs of February 20. Bz has been positive until now (with IMF magnitude close to 12 nT), with solar wind speeds close to 500 km/s, which led to only unsettled conditions so far. The situation may change in the next 24h if Bz turns negative. A small coronal hole could have also an effect on the geomagnetic conditions by February 24.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 110, basierend auf 11 Stationen.

Solarindizes für den 22 Feb 2014

Wolf-Zahl Catania	///
10cm Solarflux	163
AK Chambon La Forêt	015
AK Wingst	013
Geschätzer Ap-Wert	014
Geschätzte internationale Sonnenfleckenzahl	103 - Basierend auf 16 Stationen

Zusammenfassung auffälliger Ereignisse

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

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