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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2015 Oct 19 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

M-class flares expected (probability >=50%)

Geomagnetismus

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

Sonnenprotonen

Quiet

	10cm Fluss	Ap
19 Oct 2015	120	007
20 Oct 2015	120	006
21 Oct 2015	120	011

Bulletin

Solar activity was low with only four low level C-class flares (C1.7 being the maximum) from NOAA active regions 2434 and 2436 and 2437. NOAA AR 2437, which had produced a few M-class flares on October 17, has rounded the East limb only producing flares at the C-level during the past period. Catania sunspot region 52 is a new region near S09E12. No Earth- directed CMEs were observed. Flaring activity at the C-level is expected.

The solar wind speed decreased from about 480 km/s to 400 km/s. The magnetic field magnitude currently is about 5 nT with a mainly negative Bz component. Mostly quiet to unsettled geomagnetic conditions were observed, which are expected to continue. There is a chance for a few episodes of active to minor storming conditions due to the moderate speed stream from an equatorial coronal hole, expected to arrive on October 21.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 087, basierend auf 09 Stationen.

Solarindizes für den 18 Oct 2015

Wolf-Zahl Catania	///
10cm Solarflux	120
AK Chambon La Forêt	023
AK Wingst	017
Geschätzer Ap-Wert	020
Geschätzte internationale Sonnenfleckenzahl	071 - Basierend auf 17 Stationen

Zusammenfassung auffälliger Ereignisse

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

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