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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 May 17 1230 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
17 May 2017	074	017
18 May 2017	074	024
19 May 2017	074	010

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 550 to 470 km/s in the past 24 hours. The magnitude of the Interplanetary Magnetic Field (IMF) varied between about 2 and 6 nT. Solar wind speed is expected to decrease further within the next 24 hours. On May 17 or early on May 18, a glancing blow from the partial halo CME of May 13 may enhance solar wind conditions again. Quiet to unsettled geomagnetic conditions (K Dourbes between 1 and 3; NOAA Kp between 1 and 3) were registered in the past 24 hours. Quiet to unsettled levels are expected on May 17, 18 and the first half of May 19, with a chance for active geomagnetic levels (K Dourbes = 4) and a slight chance for minor geomagnetic storm intervals (K Dourbes = 5) on May 17 and 18. Active to minor storm conditions are possible late on May 19, as the high speed stream of a negative equatorial coronal hole is expected to arrive at Earth.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 012, basierend auf 22 Stationen.

Solarindizes für den 16 May 2017

Wolf-Zahl Catania	027
10cm Solarflux	072
AK Chambon La Forêt	013
AK Wingst	010
Geschätzer Ap-Wert	010
Geschätzte internationale Sonnenfleckenzahl	024 - Basierend auf 26 Stationen

Zusammenfassung auffälliger Ereignisse

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

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