Affichage des archives de mardi, 14 juillet 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Jul 14 1231 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
14 Jul 2020	068	016
15 Jul 2020	068	007
16 Jul 2020	067	005

Bulletin

Solar activity was at very low levels and is expected to remain so. The solar disk was spotless.

No earth-directed coronal mass ejections (CMEs) were observed in the available coronagraphic imagery.

The greater than 10 MeV proton flux and the greater than 2 MeV electron flux were at nominal levels during the last 24 hours and are expected to remain so for the next 24 hours.

The solar wind speed steadily increased over the past 24 hours from 280 km/s to 395 km/s (DSCOVR). The total magnetic field also showed a generally increasing trend and reached a maximum of 9.6 nT. Bz was predominantly negative, with an extended southward deflection from 21:00 UT on 13 July with a minimum value of -9 nT. The phi angle alternated between the positive and negative sectors.

Geomagnetic activity was quiet at the start of the period and then became active due to the extended period of moderately strong negative Bz (local K Dourbes and NOAA Kp recorded values between 1-4). Geomagnetic conditions are expected to be unsettled with possible further active intervals on 14 July in response to any prolonged periods of negative Bz. Geomagnetic activity is expected to return to quiet levels from 15 July.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 16 stations.

Indices solaires pour 13 Jul 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	068
AK Chambon La Forêt	019
AK Wingst	008
Ap estimé	008
Nombre international de taches solaires estimé	000 - Basé sur 33 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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