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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2018 Sep 23 1259 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

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

Sonnenprotonen

Quiet

	10cm Fluss	Ap
23 Sep 2018	068	020
24 Sep 2018	067	013
25 Sep 2018	067	009

Bulletin

There are no numbered sunspot groups observed on the visible side of the Sun, and there were no flares reported during last 24 hours. We expect such a quiet flaring conditions to persist in the coming hours. During last 24 hours we did not observe any signatures of the possibly Earth directed CME and the solar protons remained at the background level.

The solar wind speed is presently about 450 km/s and the interplanetary magnetic field is 9 nT. This morning, at about 04:00 UT, the in situ observations showed change of the phi angel followed by the increase of the interplanetary magnetic field magnitude, solar wind speed and temperature. All this indicate possible arrival of the fast solar wind associated with negative equatorial coronal hole. During last 24 hours, minor storm geomagnetic conditions were reported. Local station at Dourbes reported intervals of K=5 lasting from about 21:00 UT until the midnight on September 22, while NOAA reported long interval of Kp=4. Presently geomagnetic conditions are quiet to unsettled. In the coming hours we might expect unsettled to active geomagnetic conditions (isolated intervals of the minor storm conditions are also not excluded), due to the possible arrival of the fast solar wind.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 13 Stationen.

Solarindizes für den 22 Sep 2018

Wolf-Zahl Catania	///
10cm Solarflux	068
AK Chambon La Forêt	038
AK Wingst	029
Geschätzer Ap-Wert	031
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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