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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2015 Oct 21 1230 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
21 Oct 2015	124	019
22 Oct 2015	122	016
23 Oct 2015	120	008

Bulletin

Five C-class flares occurred during the past period, with NOAA active region 2436 as the main responsible source location. The strongest event was a C6.3 flare peaking at 4:34 UT on October 21. NOAA AR 2436 has developed a delta component in its trailing part. No Earth-directed CMEs were observed. Flaring at the C-level is expected, with an increased chance for an isolated M-class flare, especially from NOAA AR 2436.

The solar wind speed was relatively stable with values below 400 km/s, until about 9 UT. Since 9 UT, the solar wind speed and temperature gradually have increased and the speed reached a maximum of 480 km/s. The magnitude of the interplanetary magnetic field (IMF) went to 13 nT with a fluctuating Bz component between -9 and 11 nT. This is indicative for the start of the expected flow from the equatorial coronal hole. Currently geomagnetic conditions are quiet (K<3) to unsettled (K=3). Up to geomagnetic active (K=4) conditions are expected in the next 24 hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 084, basierend auf 09 Stationen.

Solarindizes für den 20 Oct 2015

Wolf-Zahl Catania	///
10cm Solarflux	123
AK Chambon La Forêt	016
AK Wingst	014
Geschätzer Ap-Wert	012
Geschätzte internationale Sonnenfleckenzahl	094 - Basierend auf 19 Stationen

Zusammenfassung auffälliger Ereignisse

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

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