Affichage des archives de lundi, 30 juillet 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Jul 30 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
30 Jul 2018	068	005
31 Jul 2018	068	006
01 Aug 2018	068	008

Bulletin

Solar activity was at very low levels. A B1 flare peaking at 21:48UT on 29 July had its source in the spotless faculae field near S08E65. No 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 remain at very low levels.

Solar wind speed gradually declined from about 330 to 275 km/s by 10:30UT, then increased to values around 330 km/s (DSCOVR). Bz varied mostly between -4 and +5 nT, being predominately negative during the first half of the period. The interplanetary magnetic field was mostly directed towards the Sun. Mostly quiet geomagnetic conditions were observed, with unsettled conditions recorded by Dourbes during the 18-21UT and 06-09UT intervals.

Mostly quiet geomagnetic conditions are expected, with a chance on an isolated unsettled episode.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 27 stations.

Indices solaires pour 29 Jul 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	068
AK Chambon La Forêt	///
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	000 - Basé sur 28 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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