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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2018 Jun 24 1242 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

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

Sonnenprotonen

Quiet

	10cm Fluss	Ap
24 Jun 2018	077	012
25 Jun 2018	077	008
26 Jun 2018	075	005

Bulletin

The solar activity has been quiet over the past 24 hours. Catania sunspot group 86 & 88 (NOAA active region 2713 and 2715) produced few B-class flares. The magnetic complexity of Catania sunspot group 86 (NOAA active region 2715) has slightly increased (from beta to beta-delta Hale class), therefor it has a high chance of producing C-class flare with potentially, but less likely, a M-class flare.

No Earth directed Coronal Mass Ejection has been observed. The greater than 10 MeV solar protons flux remained at nominal levels over the past 24 hours and is expected to remain so.

The Earth remained under the influence of the solar wind associated with the north pole coronal hole that has passed the central meridian on the June 20. The wind speed values reached 510 km/s on June 23 around 23:30 UT, and is currently around 490 km/s. The interplanetary magnetic field has slowly converged toward its nominal condition. Currently the total magnetic field strength below 5 nT and the southward component fluctuating between -3 and +2 nT. Solar wind conditions are expected to return to the slow regime within the next two days.

The geomagnetic conditions have been unsettled to active over the past 24 hours due to the ongoing enhancement of the solar wind with K-index (Dourbes) and Kp-index (NOAA) ranging between 2 and 4. Unsettled geomagnetic conditions are expected with possible short active periods for the next day.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 024, basierend auf 22 Stationen.

Solarindizes für den 23 Jun 2018

Wolf-Zahl Catania	///
10cm Solarflux	077
AK Chambon La Forêt	026
AK Wingst	///
Geschätzer Ap-Wert	020
Geschätzte internationale Sonnenfleckenzahl	040 - Basierend auf 28 Stationen

Zusammenfassung auffälliger Ereignisse

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

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