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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2022 Feb 25 1231 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
25 Feb 2022	093	009
26 Feb 2022	095	015
27 Feb 2022	097	015

Bulletin

The Sun produced no C flares in the past 24 hours. The chance for a C flare in the next 24 hours is estimated at 40%.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours. The greater than 2 MeV electron flux exceeded the 1000 pfu threshold in the past 24 hours, and may exceed that threshold again in the next 24 hours. The greater than 2 MeV electron fluence was at nominal levels in the past 24 hours, and may reach moderate levels in the next 24 hours.

The solar wind speed as registered by DSCOVR varied between about 380 and 490 km/s in the past 24 hours, with current values near 445 km/s. The magnitude of the Interplanetary Magnetic Field near Earth (IMF) varied between about 0 and 8 nT, and its orientation was predominantly away from the Sun. There were no extended time intervals with Bz below -5 nT. A further decrease of solar wind conditions is expected on February 25. On February 26 and 27, enhanced solar wind levels are possible due to the expected arrival of a high speed stream from a positive polarity equatorial coronal hole.

Quiet geomagnetic conditions (K-BEL between 1 and 2; NOAA Kp between 0 and 3) were registered in the past 24 hours. Quiet to unsettled geomagnetic levels (K-BEL < 4) are expected on February 25, with a chance for active intervals (K-BEL = 4). Active intervals are possible on February 26 and 27, with a slight chance for minor storm intervals (K-BEL = 5), due to the expected arrival of a high speed stream from a positive polarity equatorial coronal hole.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 022, basierend auf 17 Stationen.

Solarindizes für den 24 Feb 2022

Wolf-Zahl Catania	///
10cm Solarflux	092
AK Chambon La Forêt	009
AK Wingst	007
Geschätzer Ap-Wert	007
Geschätzte internationale Sonnenfleckenzahl	036 - Basierend auf 18 Stationen

Zusammenfassung auffälliger Ereignisse

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

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