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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2019 Feb 23 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
23 Feb 2019	071	003
24 Feb 2019	071	003
25 Feb 2019	071	005

Bulletin

Solar activity was at very low levels. The dynamic, 20-degrees long filament is now located near N15W35. No earth-directed coronal mass ejections (CMEs) have been observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal values. A negative polarity equatorial coronal hole is transiting the central meridian.

Solar activity is expected to remain at very low levels.

The earth environment has exited the wind stream from the positive polarity coronal hole (CH). Solar wind speed declined from 460 to 370 km/s (DSCOVR). Bz varied between -2 and +3 nT. The interplanetary magnetic field was directed mostly away from the Sun (positive sector) after 19:30UT. Geomagnetic activity was at quiet levels.

Mostly quiet geomagnetic conditions are expected, with a small chance on an isolated unsettled episode.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 24 Stationen.

Solarindizes für den 22 Feb 2019

Wolf-Zahl Catania	000
10cm Solarflux	071
AK Chambon La Forêt	006
AK Wingst	004
Geschätzer Ap-Wert	003
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 20 Stationen

Zusammenfassung auffälliger Ereignisse

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

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