Affichage des archives de samedi, 16 mars 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Mar 16 1236 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
16 Mar 2019	070	015
17 Mar 2019	069	022
18 Mar 2019	069	008

Bulletin

X-ray flux remained below B level. With a spotless disk, again X-ray flux is expected to remain below C level.

No new Earth directed CME's have been detected in coronagraph data.

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

Solar wind conditions continued to reflect the influence of the coronal hole, with Solar wind speed increasing but not reaching above current values of around 430 km/s. Total magnetic field reached a peak of just over 8nT late yesterday before decreasing steadily to current values between 5-6nT. Bz was variable in general but recently negative with values down below -5nT. The magnetic field phi angle was stable in the negative sector. Solar wind conditions will remain slightly enhanced with wind speed likely to rise somewhat further under the influence of the equatorial coronal hole, though speeds should start to decrease over the next 24 hours. Further slow transient perturbations are also possible in the next 24 hours due to the March 12 CME. Late March 18, early March 19 we are expected to see the influence of the equatorial positive polarity coronal hole that passed central meridian March 14/15.

Geomagnetic conditions were quiet to unsettled (NOAA Kp 0-3 and local K Dourbes 1-3). Geomagnetic conditions are expected to be quiet to unsettled with a possibility for active periods under enhanced solar speed speed conditions, possibly combined with some CME transients. Afterwards, geomagnetic conditions are expected to become quiet until the high speed stream expected late March 18, early March 19.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 09 stations.

Indices solaires pour 15 Mar 2019

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	070
AK Chambon La Forêt	010
AK Wingst	009
Ap estimé	008
Nombre international de taches solaires estimé	000 - Basé sur 15 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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