Affichage des archives de mardi, 30 mai 2023

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2023 May 30 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
30 May 2023	154	007
31 May 2023	152	007
01 Jun 2023	150	011

Régions solaires actives et éruptions solaires

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.

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 yesterday. A related high speed solar wind stream may arrive to the Earth on 1-2 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, with low chances of observing a glancing blow from the 26 May CME.

Géomagnétisme

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.

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 : 157, sur la base de 20 stations.

Indices solaires pour 29 May 2023

Nombre de Wolf, observé par Catania	169
Flux solaire à 10 cm	154
AK Chambon La Forêt	///
AK Wingst	005
Ap estimé	004
Nombre international de taches solaires estimé	157 - Basé sur 28 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

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