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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2023 Jan 26 1242 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
26 Jan 2023	170	010
27 Jan 2023	170	015
28 Jan 2023	172	011

Bulletin

Solar flaring activity was at moderate levels over the past 24 hours with an M1.3 and an M2 flare produced by NOAA AR3192, with peak times 17:01 UTC and 22:35 UT on January 25, respectively. NOAA AR3192 also produced several notable C-class flares but has now rotated over the west limb. Low flaring activity was also produced by NOAA AR 3199 and NOAA AR 3200. The remaining regions on the solar disc are all relatively small and have not shown signs of significant flaring activity. The solar flaring activity is expected to be mostly at low levels over the next 24 hours with possible isolated M-class flaring and small chance for an X-class flare.

No Earth-directed coronal mass ejections (CMEs) were detected in the available coronagraph imagery over the past 24 hours.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours and is expected to remain so in the next 24 hours. The greater than 2 MeV electron flux has been below the 1000 pfu threshold and is expected to remain so. The 24h electron fluence was at nominal levels and is expected to remain so over the next 24 hours.

Over the past 24 hours the solar wind speed varied between 400 and 500 km/s. The interplanetary magnetic field peaked at 9 nT with a minimum Bz of -7 nT. The interplanetary magnetic field was predominantly in the positive sector (directed away from the Sun). The solar wind parameters could register some minor enhancements over the next 24 hours with mild high- speed stream influence from a positive polarity coronal hole.

The geomagnetic conditions over the past 24 hours were quiet to unsettled. Mostly quiet to unsettled conditions are expected for the next days with active periods possible particularly on January 26 and 27.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 113, basierend auf 06 Stationen.

Solarindizes für den 25 Jan 2023

Wolf-Zahl Catania	///
10cm Solarflux	172
AK Chambon La Forêt	014
AK Wingst	006
Geschätzer Ap-Wert	006
Geschätzte internationale Sonnenfleckenzahl	140 - Basierend auf 10 Stationen

Zusammenfassung auffälliger Ereignisse

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

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