Affichage des archives de lundi, 3 février 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Feb 03 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
03 Feb 2020	071	005
04 Feb 2020	071	007
05 Feb 2020	071	013

Bulletin

X-ray flux remained below B level throughout the period. The Sun is now spotless and no flaring is expected.

No Earth-directed CMEs have been observed in coronagraph data.

The proton flux levels were at background values and expected to remain so.

Solar wind speed decreased from around 420 km/s to around 380 km/s. The total magnetic field was at nominal values around 5nT. The magnetic field phi angle fluctuated somewhat but was mostly in the negative sector. Solar wind conditions are expected to remain nominal until around noon February 5, when some weak effects of a high speed stream from the extension of the (negative polarity) Southern polar coronal hole, may enhance Solar wind speed.

Geomagnetic conditions were quiet to unsettled (local K Dourbes 0-2, NOAA Kp 0-3). Quiet geomagnetic conditions are expected over the next days, then by noon February 5 rising to unsettled conditions with some isolated active periods becoming possible.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 17 stations.

Indices solaires pour 02 Feb 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	072
AK Chambon La Forêt	013
AK Wingst	008
Ap estimé	007
Nombre international de taches solaires estimé	000 - Basé sur 18 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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