Affichage des archives de lundi, 10 septembre 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Sep 10 1230 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

Minor storm expected (A>=30 or K=5)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
10 Sep 2018	070	009
11 Sep 2018	069	024
12 Sep 2018	069	013

Bulletin

Solar activity was very low with X-ray flux below B level throughout the period. The only region on disk (NOAA AR 2721) is in decay phase. A prominence erupted from the southwest limb of the Sun, yesterday morning, as observed by SDO/AIA 171 imagery. Event is not detected by LASCO/SOHO coronagraph imagery due to significant data gaps. The greater than 10MeV proton flux remained at background levels over the past 24 hours. Solar activity is expected to remain at very low levels. Solar wind speed varied from 450 and 370 km/s (DSCOVR). Bz varied between -5 and +5 nT. Solar wind parameters are expected to become enhanced later today due to the influence of a co-rotating intercation region followed by the influence of a positive polarity coronal hole high speed stream. Solar wind data from previous rotations and STEREO-A suggest maxium level of solar wind speed around 600 km/s. The geomagnetic field was mostly quiet. The geomagnetic field is expected to reach active levels later today. Minor (Kp = 5) and even moderate geomagnetic storm (Kp = 6) can be also expected tomorrow.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 011, sur la base de 16 stations.

Indices solaires pour 09 Sep 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	068
AK Chambon La Forêt	011
AK Wingst	008
Ap estimé	007
Nombre international de taches solaires estimé	015 - Basé sur 25 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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