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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2019 May 12 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
12 May 2019	076	013
13 May 2019	076	011
14 May 2019	075	007

Bulletin

X-ray flux remained below C level. Catania group 16 (NOAA AR 2740) continued to decay, while also Catania group 17 (NOAA AR 2741) remained inactive. X-ray flux is expected to remain below C level.

No new Earth directed CMEs have been detected in coronagraph data.

Solar proton flux levels were at background values and are expected to remain so.

Solar wind showed the passage of the core of the May 6/7 CME. Solar wind speed was just around 350 km/s while total magnetic field showed a slow continuous decay from close to 10nT to the 6-7nT range. The magnetic field was strongly Southward starting from around -9nT with a similar continuous decaying trend in magnitude. Solar wind conditions should start to return towards nominal with the next significant increase not before noon, May 15 with the arrival of the May 11 CME.

Geomagnetic conditions reached active levels (both local K Dourbes and NOAA Kp reaching 4) in response to the persistently negative Bz of the interplanetary magnetic field. Geomagnetic conditions are expected to remain unsettled with an occasional active period initially possible, but returning to quiet to unsettled by the end of the period.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 029, basierend auf 20 Stationen.

Solarindizes für den 11 May 2019

Wolf-Zahl Catania	///
10cm Solarflux	078
AK Chambon La Forêt	024
AK Wingst	///
Geschätzer Ap-Wert	030
Geschätzte internationale Sonnenfleckenzahl	029 - Basierend auf 20 Stationen

Zusammenfassung auffälliger Ereignisse

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

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