Affichage des archives de jeudi, 7 juillet 2022

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2022 Jul 07 1231 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 Jul 2022	120	007
08 Jul 2022	125	004
09 Jul 2022	130	004

Bulletin

Solar flaring activity was low during the last 24 hours with a C1 flare detected today at 01:29 UT. NOAA Active Region (AR) 3053 (Catania group 72) is expected to produce C-class and possibly M-class flare activity in the next 24 hours. The yet-unnamed AR at S20E80 that produced the only C-class flare is also expected to produce more C-class events.

A faint Coronal Mass Ejection (CME) can be seen in SOHO/LASCO C2 and STEREO/COR2 images, launched at 5 July 05:00 UT. It is estimated to arrive on 8 July, however, its effects are expected to be minor.

The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is expected to remain so for the next 24 hours. The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold and is expected to remain below this threshold during the next 24 hours. The 24h electron fluence was at nominal levels and is expected to remain so.

The Solar Wind (SW) conditions were typical of the slow SW regime up until today 08:15 UT. Since then a disturbance has been registered by the DISCOVR and ACE missions, but the exact nature of the event cannot be identified yet. The SW speed was between 300 to 350 km/h but has now raised to 420 km/h. The total magnetic field (Bt) was below 10 nT until 08:00 UT today and has now reached 20 nT, while its Bz component was around zero and has now dropped to -16 nT. The interplanetary magnetic field phi angle was mostly positive (directed away from the Sun) during the last 24 hours. In the next 24 hours the SW conditions will remain affected by the disturbance that recently arrived.

Geomagnetic conditions were quiet globally and locally (Kp and K Doubres 0-2) during the last 24 hours. The geomagnetic activity is expected to become moderate both globally and locally in the next 24 hours as a result of the arrival today of the yet-unidentified disturbance.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 095, sur la base de 12 stations.

Indices solaires pour 06 Jul 2022

Nombre de Wolf, observé par Catania	091
Flux solaire à 10 cm	115
AK Chambon La Forêt	006
AK Wingst	006
Ap estimé	006
Nombre international de taches solaires estimé	085 - Basé sur 26 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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