Affichage des archives de mardi, 7 mai 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 May 07 1230 UTC

Prévisions SIDC

Éruptions solaires

C-class flares expected, (probability >=50%)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
07 May 2019	077	009
08 May 2019	078	016
09 May 2019	078	007

Bulletin

NOAA AR 2740 (Catania group 16) continued to produce several flares. The largest was a C7.3 flare peaking at 13:54UT. The region continues to exhibit mixed polarity flux and is expected to remain active. Another region (NOAA AR 2741) rotated on disk from the East. Further activity is likely at a level of C-class flares.

Coronagraph images show that the CME onset(s) related to yesterdays flaring activity from region 2740 was directed sufficiently North and East of the Earth to exclude any possible Earth directed component. No other Earth directed CME's were recorded.

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

Solar wind conditions were nominal with solar wind speed under 400 km/s and total magnetic field under 5 nT. The North-South orientation of the magnetic field was variable and the phi angle was mostly in the negative sector. Solar wind conditions are expected to become slightly enhanced by midnight under the influence of a small equatorial coronal hole.

Geomagnetic conditions were quiet to unsettled (NOAA Kp 1-2, local K Dourbes 0-3). Geomagnetic conditions are expected to become unsettled with a possibility of an isolated active period.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 027, sur la base de 22 stations.

Indices solaires pour 06 May 2019

Nombre de Wolf, observé par Catania	026
Flux solaire à 10 cm	076
AK Chambon La Forêt	011
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	015 - Basé sur 27 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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