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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2020 Feb 07 1244 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
07 Feb 2020	071	012
08 Feb 2020	071	010
09 Feb 2020	071	007

Bulletin

X-ray flux remained below B level throughout the period. The Sun is spotless and no flaring is expected.

No Earth-directed CMEs have been observed in coronagraph data.

A low latitude positive polarity coronal hole on the Northern hemisphere is transiting the central meridian since this morning. It is expected to influence Solar wind conditions near Earth starting late February 10.

The proton flux levels were at background values and expected to remain so. High energy electron fluxes are expected to rise due to the ongoing high speed Solar wind conditions.

Solar wind conditions showed the passage of the high speed stream proper from the Southern polar coronal hole extension. Solar wind speed reached well over 600 km/s (to around 650 km/s around 2UT). Total magnetic field declined from around 10nT to under 5nT over the period. Bz was variable with some peaks don to -8nT. The magnetic field phi angle was in the negative sector throughout the period. Solar wind conditions are expected to remain enhanced initially, while decaying slowly over the next days.

Geomagnetic conditions reached minor storm levels locally (local K Dourbes 5 late yesterday) while NOAA Kp reached active levels (4) at most. Geomagnetic conditions are expected to be quiet to unsettled over the next days with initially some active periods still possible.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 17 Stationen.

Solarindizes für den 06 Feb 2020

Wolf-Zahl Catania	000
10cm Solarflux	071
AK Chambon La Forêt	031
AK Wingst	020
Geschätzer Ap-Wert	021
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 25 Stationen

Zusammenfassung auffälliger Ereignisse

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

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