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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2020 May 31 1231 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
31 May 2020	070	010
01 Jun 2020	070	011
02 Jun 2020	069	007

Bulletin

During last 24 hours, solar flaring activity was low, without any flares reported. We expect a low level of flaring activity in the coming hours. Isolated B-class flares are possible, while C-class flares are possible but not probable. During last 24 hours there were no Earth directed CMEs and the solar protons remained at the background level.

The in situ observations show clear signatures of the solar wind originating from the negative polarity coronal hole. It is however, not possible to specify if the source was the extension of the southern polar coronal hole or the small equatorial coronal hole as they both have negative polarity. The solar wind speed is presently 400 km/s and the interplanetary magnetic field magnitude is about 4 nT. The arrival of solar wind originating from the coronal hole induced active geomagnetic conditions. The local station at Dourbes reported interval of K=4 from about 21:00 UT until the 24:00 UT on May 30, while NOAA reported only longer interval of Kp=3. We expect quiet to unsettled geomagnetic conditions in the coming hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 20 Stationen.

Solarindizes für den 30 May 2020

Wolf-Zahl Catania	///
10cm Solarflux	070
AK Chambon La Forêt	025
AK Wingst	020
Geschätzer Ap-Wert	021
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 33 Stationen

Zusammenfassung auffälliger Ereignisse

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

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