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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2015 Feb 18 1232 UTC

Vorhersage des SIDC

Sonneneruptionen

Quiet conditions (<50% probability of C-class flares)

Geomagnetismus

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

Sonnenprotonen

Quiet

	10cm Fluss	Ap
18 Feb 2015	120	017
19 Feb 2015	125	006
20 Feb 2015	130	008

Bulletin

The solar activity was very low. Regions NOAA 2284 and 2285 were decaying further, while NOAA 2282 was stable. Flaring activity is expected to remain low, with some chance for C-flares during the next two days. No CMEs Earth directed CMEs were observed. The interplanetary magnetic field was enhanced but with a decreasing magnitude from 14 to 5 nT. The Bz component mostly was negative. The disturbance starting at 9:40 UT on 16th of February possibly is related to a equatorial CH that passed the central meridian on the 11th of February. The solar wind speed steadily increased from about 400 to 470 km/s. Geomagnetic conditions were unsettled, with a several time slots of active conditions (K=4) at the global and local level (after 18 UT on the 17th and at 3 and 4 UT on the 18th of February at the local level at Dourbes). Geomagnetic conditions are expected to return to quiet to unsettled levels for the next 48 hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 060, basierend auf 10 Stationen.

Solarindizes für den 17 Feb 2015

Wolf-Zahl Catania	///
10cm Solarflux	119
AK Chambon La Forêt	038
AK Wingst	021
Geschätzer Ap-Wert	023
Geschätzte internationale Sonnenfleckenzahl	021 - Basierend auf 24 Stationen

Zusammenfassung auffälliger Ereignisse

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

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