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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2015 Dec 18 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

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

Sonnenprotonen

Quiet

	10cm Fluss	Ap
18 Dec 2015	116	006
19 Dec 2015	114	027
20 Dec 2015	112	010

Bulletin

The Sun produced 3 C flares in the past 24 hours. The brightest flare was a C4.6 flare released by NOAA AR 2469 which peaked at 05:09 UT on December 18. C flares are possible within the next 24 hours, with a chance for an M flare. During the past 24 hours, the solar wind speed gradually decreased from about 470 to 400 km/s with intermittent peaks up to 550 km/s. The magnitude of the Interplanetary Magnetic Field varied between 1 and 8 nT. During the past 24 hours, quiet to unsettled geomagnetic levels were registered (K Dourbes between 1 and 3, NOAA Kp between 1 and 4). Quiet to unsettled geomagnetic conditions (K Dourbes < 4) are expected on December 18. Due to the expected arrival of the December 16 CMEs, active to minor storm conditions (K Dourbes = 4-5) are expected on December 19, with a chance for moderate to major storm conditions (K Dourbes = 6-7). Quiet to unsettled geomagnetic levels are expected on December 20, with a chance for active (K Dourbes = 4) excursions.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 047, basierend auf 07 Stationen.

Solarindizes für den 17 Dec 2015

Wolf-Zahl Catania	078
10cm Solarflux	118
AK Chambon La Forêt	014
AK Wingst	011
Geschätzer Ap-Wert	009
Geschätzte internationale Sonnenfleckenzahl	053 - Basierend auf 22 Stationen

Zusammenfassung auffälliger Ereignisse

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

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