Affichage des archives de mardi, 30 juin 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Jun 30 1256 UTC

Prévisions SIDC

Éruptions solaires

C-class flares expected, (probability >=50%)

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
30 Jun 2015	091	008
01 Jul 2015	090	013
02 Jul 2015	091	007

Bulletin

Solar activity was relatively quiet, with only NOAA Active Region (AR) 2373 producing two C class flares in the last 24 hours, A C2.3 flare peaking at 14:55 UT and a C2.4 flare peaking at 18:07 UT. Other recurrent active regions are rotating into view now and may increase solar activity in the coming days. Proton levels are still declining and are now below 1 pfu. The solar wind speed has remained roughly constant over the past 24 hours, and has varied between 360 km/s to 440 km/s. The total magnetic field has been slowly decreasing from 6 nT to 3 nT, and the Bz component has fluctuated from positive to negative between +6 and -5 nT, but remained around 0 nT for the past several hours. Geomagnetic conditions ranged between Kp index 1-2 (NOAA) and local K index 1-3 over the past 24 hours. There were no significant CMEs over the past 24 hours. A small CME emerged from the East solar limb, possibly from AR 2375. The CME had a recorded velocity of 625 km/s but is not expected to be geoeffective.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 032, sur la base de 24 stations.

Indices solaires pour 29 Jun 2015

Nombre de Wolf, observé par Catania	049
Flux solaire à 10 cm	097
AK Chambon La Forêt	010
AK Wingst	006
Ap estimé	006
Nombre international de taches solaires estimé	032 - Basé sur 34 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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