Affichage des archives de vendredi, 10 mai 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 May 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 May 2019	075	025
11 May 2019	074	047
12 May 2019	073	010

Bulletin

X-ray flux remained below C level with Catania groups 16 and 17 (NOAA AR 2740 and 2741) remaining inactive. X-ray flux is expected to remain below C level.

No new Earth directed CME's have been observed in coronagaph data.

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

Solar wind saw the expected weak solar wind increase. Solar wind speed reached just over 390 km/s before coming down again to current levels around 325 km/s. Total magnetic field was around 8nT at the start of the period but quickly recovered to nominal values around 4nT with Bz variable and the phi angle in the negative sector. Solar wind is expected to become disturbed from this afternoon onwards by the arrival of the May 6 CME though solar wind speed should not become too much increased.

Geomagnetic conditions were quiet to unsettled (NOAA Kp 1-2, local K Dourbes 0-3). Geomagnetic conditions may reach minor storm levels due to the expected CME arrival.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 028, sur la base de 20 stations.

Indices solaires pour 09 May 2019

Nombre de Wolf, observé par Catania	028
Flux solaire à 10 cm	076
AK Chambon La Forêt	014
AK Wingst	///
Ap estimé	010
Nombre international de taches solaires estimé	026 - Basé sur 20 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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