Affichage des archives de lundi, 8 octobre 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Oct 08 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
08 Oct 2018	068	023
09 Oct 2018	067	007
10 Oct 2018	067	007

Bulletin

There are no active regions visible on the solar disk. No C-class flares in past 24 h. Solar activity is expected to remain at very low levels.

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 hours.

The solar wind speed is at 530 km/s with interplanetary magnetic field intensity of 7 nT. Geomagnetic conditions have reached minor storm levels, due to the arrival of the high speed solar wind from a positive polarity coronal hole. Solar wind speed reached 600 km/s with interplanetary magnetic field intensities close to 20 nT, Bz went down to -15 nT. These solar wind conditions caused active and minor storm periods (K = 4 and 5, both at local and at planetary levels) starting around 12:00 UT on October 7 and still ongoing, as the Earth is inside the fast solar wind stream at present. Geomagnetic conditions will gradually return to quiet levels in the coming hours, but active geomagnetic conditions can still occur today and tomorrow.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 23 stations.

Indices solaires pour 07 Oct 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	068
AK Chambon La Forêt	043
AK Wingst	027
Ap estimé	027
Nombre international de taches solaires estimé	000 - Basé sur 27 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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