Affichage des archives de jeudi, 1 décembre 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Dec 01 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
01 Dec 2016	084	003
02 Dec 2016	083	003
03 Dec 2016	082	003

Bulletin

NOAA 2615 remained the only flare-active sunspot region on the disk. It produced the two sole C-class events of the period, a C1 flare at 15:07UT and a C2 flare at 15:25UT. NOAA 2612 and NOAA 2614 are further decaying and were quiet. The filament north of NOAA 2612 (N15W15) erupted between 13:30 and 14:30UT. Coronal dimming was observed, but the coronagraphic images do not show an obvious coronal mass ejection. In H-alpha, a nearby filament blob (N35W15) quietly disappeared in the subsequent hours. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10MeV proton flux was at nominal levels.

There's still a chance on an isolated C-class flare.

Solar wind parameters are at nominal levels, with wind speed values mostly between 340 and 370 km/s and Bz fluctuating between -4 nT and +5 nT. The interplanetary magnetic field was mostly directed away from the Sun. Solar wind parameters are expected to remain at nominal values. A small positive coronal hole (S15W00) is near the central meridian and may mildly affect the earth-environment late on 4 or on 5 December.

The geomagnetic field was at quiet levels and is expected to remain so.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 057, sur la base de 12 stations.

Indices solaires pour 30 Nov 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	084
AK Chambon La Forêt	006
AK Wingst	002
Ap estimé	002
Nombre international de taches solaires estimé	/// - Basé sur /// 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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