Affichage des archives de dimanche, 25 mars 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Mar 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 Mar 2018	067	018
26 Mar 2018	068	013
27 Mar 2018	067	007

Bulletin

Solar activity was at very low levels. The solar disk remained devoid of sunspots. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels.

Solar activity is expected to stay at very low levels.

Solar wind near Earth was enhanced due to the influence of the negative polarity coronal hole (CH) wind stream. Solar wind speed increased from an initial 400 km/s to peak values just below 500 km/s, ending the period near 470 km/s (DSCOVR). Bz oscillated between -7 and +7 nT. The interplanetary magnetic field was predominantly directed towards the Sun. Geomagnetic activity was at quiet to unsettled levels, with Kp index recording active conditions during the 00-03UT and 03-06UT interval.

Quiet to active geomagnetic conditions are expected with a decreasing chance on an isolated minor storming episode in response to the continuing CH wind stream.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 22 stations.

Indices solaires pour 24 Mar 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	068
AK Chambon La Forêt	018
AK Wingst	010
Ap estimé	010
Nombre international de taches solaires estimé	000 - 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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