Affichage des archives de mercredi, 2 octobre 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Oct 02 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
02 Oct 2019	069	011
03 Oct 2019	068	010
04 Oct 2019	068	013

Bulletin

Solar activity was at very low levels. Decaying sunspot group NOAA 2749 is barely visible and was quiet during the period. No earth-directed coronal mass ejections (CMEs) have been observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal values.

Solar activity is expected to remain at very low levels.

Solar wind speed remained enhanced, varying between mostly 450 and 520 km/s, and ending the period with values near 480 km/s (ACE). Bz ranged from -4 to + 2 nT, but was near 0 nT for most of the time. The interplanetary magnetic field (phi angle) was directed away from the Sun (positive sector). Quiet to unsettled geomagnetic conditions were recorded in both Kp and K Dourbes.

Geomagnetic activity is expected to be at quiet to unsettled levels until around 4 October, when the wind stream from a patchy negative polarity coronal hole in the southern solar hemisphere may exert some influence on the earth environment. Mostly unsettled conditions are expected then.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 007, sur la base de 21 stations.

Indices solaires pour 01 Oct 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	069
AK Chambon La Forêt	013
AK Wingst	012
Ap estimé	012
Nombre international de taches solaires estimé	011 - Basé sur 19 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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