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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 May 19 1232 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
19 May 2017	072	023
20 May 2017	072	024
21 May 2017	072	024

Bulletin

In the past 24 hours, no C flares were observed. Very low solar activity (no C flares) is expected in the next 24 hours. Solar wind speed measured by DSCOVR decreased from about 400 to 370 km/s until around 20h UT on May 18, when it increased again to current values of about 480 km/s. The magnitude of the Interplanetary Magnetic Field (IMF) varied between about 3 and 13 nT. Quiet to unsettled geomagnetic conditions (K Dourbes between 1 and 3; NOAA Kp between 1 and 3) were registered in the past 24 hours. Active (K Dourbes = 4) to minor storm conditions (K Dourbes = 5) are possible on May 19, 20 and 21, due to the expected high speed stream from a negative equatorial coronal hole.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 023, basierend auf 15 Stationen.

Solarindizes für den 18 May 2017

Wolf-Zahl Catania	025
10cm Solarflux	072
AK Chambon La Forêt	015
AK Wingst	011
Geschätzer Ap-Wert	013
Geschätzte internationale Sonnenfleckenzahl	021 - Basierend auf 26 Stationen

Zusammenfassung auffälliger Ereignisse

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

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