Affichage des archives de mercredi, 31 mai 2023

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2023 May 31 1231 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
31 May 2023	162	007
01 Jun 2023	162	010
02 Jun 2023	162	016

Régions solaires actives et éruptions solaires

There are ten visible active regions on the solar disk. NOAA AR 3315 remains the most complex region, again with beta-gamma-delta magnetic field configuration. It produced the largest flare of the past 24 hours, M1.4 peaking at 13:38 UTC on 30 May. Nevertheless, an active region rotating into view from the east limb is also producing M-class flares and elevating the x-ray background levels. More M-class flares can be expected and X-class flares are possible.

Éjection de masse coronale

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

Trous coronaux

A positive polarity coronal hole in the southern hemisphere crossed the central meridian on 29 May. A related high speed solar wind stream may arrive to the Earth on 2 June.

Vent solaire

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.

Géomagnétisme

The geomagnetic conditions over the past 24 hours were quiet (K_Belgium and Kp below 3). Mostly quiet geomagnetic conditions are expected for the next 24 hours.

Niveaux de flux de protons

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.

Flux d'électrons sur l'orbite géostationnaire

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.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 171, sur la base de 19 stations.

Indices solaires pour 30 May 2023

Nombre de Wolf, observé par Catania	220
Flux solaire à 10 cm	162
AK Chambon La Forêt	///
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	161 - Basé sur 29 stations

Résumé des événements marquants

Données fournies par le Solar Influences Data analysis Center© - SIDC - Traité par SpaceWeatherLive

Toutes les heures sont indiquées en UTC

<< Aller à l'aperçu quotidien