Affichage des archives de mercredi, 26 juin 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Jun 26 1230 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
26 Jun 2019	068	008
27 Jun 2019	067	011
28 Jun 2019	067	006

Bulletin

Solar flaring activity continues to be very low without flares reported. One of the two numbered active regions NOAA AR 2742 rotated behind the west solar limb. Presently only one active region is observed on the visible side of the Sun, Catania sunspot group 19 (NOAA AR 2743). This sunspot group has only alpha configuration of its photospheric magnetic field and is therefore not expected to be source of flaring activity in the coming hours. During last few days only very narrow and slow CMEs were reported and there were no Earth directed CMEs. The solar protons remained at the background level.

The solar wind speed is presently about 400 km/s and slowly increasing. The interplanetary magnetic field magnitude remains to be low, with the value of about 3 nT. The in situ observations do not show clear signatures of the fast solar wind, but observed increase of the solar wind speed could be possibly associated with the expected arrival of the fast solar wind. The geomagnetic conditions are quiet and we expect quiet to possibly unsettled geomagnetic conditions.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 011, sur la base de 18 stations.

Indices solaires pour 25 Jun 2019

Nombre de Wolf, observé par Catania	011
Flux solaire à 10 cm	068
AK Chambon La Forêt	009
AK Wingst	004
Ap estimé	005
Nombre international de taches solaires estimé	012 - Basé sur 26 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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