Affichage des archives de lundi, 28 juillet 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Jul 28 1234 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
28 Jul 2014	125	008
29 Jul 2014	128	004
30 Jul 2014	130	004

Bulletin

There are 8 relatively small sunspot groups visible. NOAA 2127, still close to the southeast limb, and NOAA 2126 produced each one C1.2 flare (peaking resp. at 14:18UT yesterday and at 11:45UT today). Both regions seem to have some mixed magnetic polarity. No Earth-directed CMEs were observed. Some 10-20 degrees long filaments are observed in the NE, SE and NW solar quadrant, as well as in NOAA 2121. There's a chance on further C-class flaring, in particular from NOAA 2127 and 2126. An eruption of one of the filaments is possible. A disturbance was observed in ACE solar wind data starting shortly after 03:00UT. Over the next four hours, wind speed gradually increased from 350 to 430 km/s, while Bz varied between +11 and -8 nT, being mostly positive near the end of the period. The geomagnetic field was unsettled to locally active in response to this disturbance. Quiet to unsettled geomagnetic conditions are expected, with locally an active period possible.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 083, sur la base de 11 stations.

Indices solaires pour 27 Jul 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	121
AK Chambon La Forêt	008
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	062 - Basé sur 22 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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