Affichage des archives de samedi, 4 mars 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Mar 04 1230 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
04 Mar 2017	075	015
05 Mar 2017	074	013
06 Mar 2017	074	011

Bulletin

Solar activity was very low during the period, with no C-class flares or higher reported. The remnants of sunspot group NOAA2641 are barely visible. NOAA2638 rotated over the west limb. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10MeV proton flux was at nominal levels.

Quiet flaring conditions are expected to continue.

Earth was still under the influence of the high speed stream (HSS) from the negative trans-equatorial coronal hole (CH). Solar wind speed varied between 720 and 620 km/s, ending the period with values around 690 km/s. Bz mostly fluctuated between -5 nT and +6 nT. The interplanetary magnetic field was directed towards the Sun. A small positive equatorial coronal hole (CH) is near the central meridian, but the effect on the geo- environment is expected to be limited.

The geomagnetic field was at quiet to active levels, with Kp at minor storming during the 00-03UT and 03-06UT intervals. Quiet to active levels are expected, with a chance on another minor storming interval.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 11 stations.

Indices solaires pour 03 Mar 2017

Nombre de Wolf, observé par Catania	068
Flux solaire à 10 cm	078
AK Chambon La Forêt	028
AK Wingst	017
Ap estimé	018
Nombre international de taches solaires estimé	040 - Basé sur 16 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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