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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Aug 19 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
19 Aug 2017	080	031
20 Aug 2017	082	021
21 Aug 2017	084	007

Bulletin

NOAA AR 2671 has again increased in size and produced C-class flares, there were four in past 24 h. The strongest one did not originate in NOAA AR 2671 though, it was a C4.4 peaking at 20:02 UT on August 18 and came from a region rotating into view from the east limb. A CME erupted in the vicinity of this region (seen at 14:24 UT on August 18 by LASCO-C2), directed to the east and will not be geoeffective. C-class (and possibly M-class) flares can be expected

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 hours.

The Earth is still inside a high speed solar wind stream, the speed is around 680 km/s with interplanetary magnetic field intensity of 7 nT. As a consequence, Kp reached 5 and the local K went up to 4. More disturbed conditions can be expected in the next 24 h.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 051, basierend auf 23 Stationen.

Solarindizes für den 18 Aug 2017

Wolf-Zahl Catania	///
10cm Solarflux	080
AK Chambon La Forêt	037
AK Wingst	027
Geschätzer Ap-Wert	027
Geschätzte internationale Sonnenfleckenzahl	041 - Basierend auf 28 Stationen

Zusammenfassung auffälliger Ereignisse

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

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