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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2023 May 30 1231 UTC

Vorhersage des SIDC

Sonneneruptionen

M-class flares expected (probability >=50%)

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
30 May 2023	154	007
31 May 2023	152	007
01 Jun 2023	150	011

Solaraktive Regionen und Flares

There are ten visible active regions on the solar disk. NOAA AR 3315 remains the most complex region, but it has lost its delta spot and it has now a beta-gamma magnetic field configuration. NOAA AR 3310 has been producing the largest flares, including two M-class flares. This region is currently rotating out of view over the west limb. The largest flare of the past 24 hours was an M1.3 one, peaking at 10:22 UTC, from NOAA AR 3310. There will be C-class flares in the next 24 hours, and more M-class flares can be expected.

Koronaler Massenauswurf

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

Koronale Löcher

A positive polarity coronal hole in the southern hemisphere crossed the central meridian yesterday. A related high speed solar wind stream may arrive to the Earth on 1-2 June.

Sonnenwind

The Earth is inside slow solar wind, with an interplanetary magnetic field around 7 nT and solar wind speed of about 380 km/s. Similar conditions are expected for the next 24 hours, with low chances of observing a glancing blow from the 26 May CME.

Geomagnetismus

The geomagnetic conditions over the past 24 hours were quiet (K_Belgium and Kp below 3). Mostly quiet geomagnetic conditions are expected, with chances of active levels if we see the glancing blow from the 26 May CME.

Protonenflusswerte

Over the past 24 hours the greater than 10 MeV GOES proton flux was at nominal levels and is expected to remain so in the next 24 hours.

Elektronenflüsse im geostationären Orbit

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

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 157, basierend auf 20 Stationen.

Solarindizes für den 29 May 2023

Wolf-Zahl Catania	169
10cm Solarflux	154
AK Chambon La Forêt	///
AK Wingst	005
Geschätzer Ap-Wert	004
Geschätzte internationale Sonnenfleckenzahl	157 - Basierend auf 28 Stationen

Zusammenfassung auffälliger Ereignisse

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

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