Affichage des archives de mardi, 25 février 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Feb 25 1231 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
25 Feb 2020	070	003
26 Feb 2020	070	008
27 Feb 2020	070	007

Bulletin

Solar activity was at very low levels. The Sun was spotless. 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. Some small and patchy equatorial coronal holes (CHs) are present on the solar disk.

Solar activity is expected to remain at very low levels.

Solar wind conditions were at background levels. Solar wind speed started the period around 390 km/s, reaching a peak near 420 km/s around 21UT, and ending the period with values around 350 km/s (ACE). Bz varied between -3 and +2 nT. The interplanetary magnetic field (phi angle) was directed towards the Sun (negative sector). Geomagnetic conditions were at quiet levels.

Geomagnetic activity is expected to remain mostly at quiet levels. Isolated unsettled intervals are possible if the earth environment should encounter enhanced wind streams from currently present small and patchy coronal holes.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 14 stations.

Indices solaires pour 24 Feb 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	070
AK Chambon La Forêt	006
AK Wingst	005
Ap estimé	003
Nombre international de taches solaires estimé	000 - Basé sur 21 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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