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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Jul 10 1259 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
10 Jul 2017	091	009
11 Jul 2017	090	008
12 Jul 2017	095	005

Bulletin

NOAA AR 2665 (the only visible active region on the disk) produced multiple B class flares and one C1.5 flare over the past 24 hours, with peak 00:31 UT today. This region continues to grow, more C-class flares can be expected (and less likely M-flares). The AR development (rotation of the leading spot and evolution of intermediate area between 2 main spots) suggests a buildup of magnetic shear and NE-SW neutral line, which eventually may lead to the filament formation. No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 hours. Solar wind parameters reflected a fainting influence of a high speed stream from an equatorial coronal hole. Total magnetic field decreased from about 15 to 7 nT, while the Bz component was between +/-2 nT (starting from 00 UT today). Solar wind speed remained below 600 km/s. Geomagnetic conditions were ranged from active to quiet. Planetary index Kp decreased from 4 to 1, while the local K index (Dourbes) was almost constant K =3 over the past 24 hours. The geomagnetic field is expected to be at quiet to active levels.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 046, basierend auf 25 Stationen.

Solarindizes für den 09 Jul 2017

Wolf-Zahl Catania	///
10cm Solarflux	091
AK Chambon La Forêt	034
AK Wingst	025
Geschätzer Ap-Wert	028
Geschätzte internationale Sonnenfleckenzahl	047 - Basierend auf 33 Stationen

Zusammenfassung auffälliger Ereignisse

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

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