Affichage des archives de lundi, 2 septembre 2013

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2013 Sep 02 1300 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
02 Sep 2013	104	011
03 Sep 2013	104	012
04 Sep 2013	104	015

Bulletin

Solar activity has been eruptive during the past 24 hours, featuring one C1.7 flare from NOAA AR 11834 peaking at 14:20 UT. More C flares from NOAA AR 11834 and 11836 are likely within the next 48 hours, with a slight chance for an M flare. Solar wind speed rose from about 460 to 580 km/s around 6h UT on September 1, possibly due to the effects of the CME of August 30. Solar wind speeds later decreased to about 430 km/s and climbed to a peak of 520 km/s around 3h UT on September 2. Current wind speed lies around 420 km/s. Meanwhile, the Interplanetary Magnetic Field varied between 2 and 6 nT. Solar wind may experience the influence of a small Coronal Hole on September 4. The geomagnetic activity was at quiet levels (K Dourbes between 1 and 3; NOAA Kp between 2 and 3) during the past 24 hours. Quiet conditions (K Dourbes < 4) are expected for September 2 and 3. Quiet to active conditions are possible on September 4, due to the effects of a Coronal Hole high speed stream.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 058, sur la base de 11 stations.

Indices solaires pour 01 Sep 2013

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	104
AK Chambon La Forêt	017
AK Wingst	012
Ap estimé	012
Nombre international de taches solaires estimé	052 - Basé sur 19 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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