Affichage des archives de vendredi, 25 janvier 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Jan 25 1230 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

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

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
25 Jan 2019	072	022
26 Jan 2019	072	015
27 Jan 2019	071	011

Bulletin

During last 24 hours the level of solar flaring activity increased, however all reported flares were only A-class and B-class flares. Since NOAA AR 2733 still has beta configuration of its photospheric magnetic field we expect such a level of solar activity to persist in the coming hours. The isolated C-class flares are also possible, although not very probable. There were no Earth directed CMEs reported during last 24 hours and the solar protons remained at the background level.

The Earth is still inside the fast solar wind with the speed of 610 km/s. The interplanetary magnetic field magnitude is presently about 5 nT. The longer intervals of negative value of the Bz component of the interplanetary magnetic field and the high solar wind speed induced disturbed geomagnetic conditions. Around the midnight and early morning of January 25 local station at Dourbes and NOAA reported K=5 and Kp=5, respectively. Presently geomagnetic conditions are unsettled to active and we expect such a conditions to persist in the coming hours, with possibly isolated intervals of minor storm conditions (up to K=5).

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 025, sur la base de 11 stations.

Indices solaires pour 24 Jan 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	072
AK Chambon La Forêt	026
AK Wingst	021
Ap estimé	021
Nombre international de taches solaires estimé	023 - Basé sur 19 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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