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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Mar 03 1247 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
03 Mar 2017	079	020
04 Mar 2017	077	011
05 Mar 2017	076	009

Bulletin

Solar activity is very low and only one B-class flare was reported in the past 24 hours. We expect that solar activity will remain low with only isolated B-class flares possible in the coming hours. No Earth directed Coronal Mass Ejections have been observed and the solar protons remained at background level in the past 24 hours.

The Earth is still inside the fast solar wind associated with the large coronal hole which reached central meridian on February 25. The solar wind speed is presently 720 km/s and the interplanetary magnetic field magnitude is about 5 nT. Due to the fast solar wind and the intervals of negative value of the Bz component of the interplanetary magnetic field (about 710 km/s and -5 nT, respectively) strongly disturbed geomagnetic conditions were reported around midnight of March 02 (Dourbes reported K=5 and NOAA Kp=4) and today at about 09 UT (NOAA reported Kp=5 and Dourbes K=4). The geomagnetic conditions are presently unsettled to active and we expect them to stay so in the coming hours. Due to the still rather fast solar wind, longer intervals of the negative value of the Bz component might cause the occasional intervals with the K index going up to 5.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 050, basierend auf 11 Stationen.

Solarindizes für den 02 Mar 2017

Wolf-Zahl Catania	052
10cm Solarflux	079
AK Chambon La Forêt	043
AK Wingst	036
Geschätzer Ap-Wert	038
Geschätzte internationale Sonnenfleckenzahl	054 - Basierend auf 26 Stationen

Zusammenfassung auffälliger Ereignisse

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

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