Affichage des archives de mercredi, 22 juillet 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Jul 22 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
22 Jul 2015	089	005
23 Jul 2015	090	015
24 Jul 2015	093	008

Bulletin

The two currently visible sunspot groups are gradually declining. A small active region is just behind the southeast limb. No C-class flares or earth-directed coronal mass ejections (CMEs) were observed.

Quiet flaring conditions are expected, with a small chance on an isolated C-class flare.

Solar wind speed gradually declined to its current values between 340 and 360 km/s, as Earth exited the moderate-speed stream from the trans- equatorial coronal hole (CH). Bz has been oscillating mostly between -7 and +7 nT. Quiet to unsettled geomagnetic conditions have been recorded. A positive CH between latitude 25 to 40 degrees north is transiting the central meridian and may affect the geomagnetic field starting 25 July.

Quiet to unsettled geomagnetic conditions are expected, with a chance on an active geomagnetic episode in response to the possible glancing blow from the 19 July CME.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 039, sur la base de 18 stations.

Indices solaires pour 21 Jul 2015

Nombre de Wolf, observé par Catania	037
Flux solaire à 10 cm	091
AK Chambon La Forêt	014
AK Wingst	012
Ap estimé	013
Nombre international de taches solaires estimé	041 - Basé sur 30 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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