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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Mar 23 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
23 Mar 2017	075	018
24 Mar 2017	075	013
25 Mar 2017	075	007

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. A weak filament eruption in the NE quadrant was observed in GONG H alpha and AIA HeII images around 17h UT on March 22. CACTUS detected an associated, narrow CME to the NE in LASCO C2 images around 18:36 UT. This CME is not expected to be geoeffective. Over the past 24 hours, solar wind speed measured by DSCOVR varied between about 550 and 750 km/s, with current values around 550 km/s. The magnitude of the Interplanetary Magnetic Field decreased from about 7 to about 3 nT. There were no extended periods with Bz below -5 nT. Unsettled to minor storm conditions (K Dourbes between 3 and 5; NOAA Kp between 4 and 5) were registered in the past 24 hours due to the enhanced solar wind conditions caused by the passage of a high speed stream from a positive coronal hole. The minor geomagnetic storm intervals occurred between 21h on March 22 and 0h UT on March 23. Continued influence from the high speed stream is expected on March 23, with quiet to active geomagnetic levels (K Dourbes < 5) and a chance for minor geomagnetic storm intervals (K Dourbes = 5). On March 24, active periods (K Dourbes = 4) are possible as waning high speed stream influence is expected. Quiet to unsettled geomagnetic conditions (K Dourbes < 4) are expected on March 25.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 014, basierend auf 21 Stationen.

Solarindizes für den 22 Mar 2017

Wolf-Zahl Catania	///
10cm Solarflux	073
AK Chambon La Forêt	044
AK Wingst	028
Geschätzer Ap-Wert	031
Geschätzte internationale Sonnenfleckenzahl	013 - Basierend auf 27 Stationen

Zusammenfassung auffälliger Ereignisse

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

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