Affichage des archives de mercredi, 3 juillet 2024

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2024 Jul 03 1231 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
03 Jul 2024	160	013
04 Jul 2024	168	010
05 Jul 2024	172	011

Régions solaires actives et éruptions solaires

Solar flaring activity over the past 24 hours was at moderate levels, with one M-class flare recorded. The largest flare was a M1.5-flare, with peak time 07:41 UTC on July 03 associated with NOAA AR 3730 (beta). There are currently 12 numbered active regions on the visible disk. NOAA AR 3729 (beta-gamma) was the largest and most magnetically complex region on disk and produced most of the flares in the last 24 hours. NOAA AR 3721, NOAA AR 3722 and NOAA AR 3724 have started to rotate over the west limb. NOAA AR 3728 has turned into a plage region. The solar flaring activity is likely to be at moderate levels over the coming days with C-class flares expected and M-class flares likely and an unlikely chance for a X-class flares.

Éjection de masse coronale

Two Coronal Mass Ejection (CME), were detected at 18:24 UTC on July 02 and at 08:36 UTC on July 03, in LASCO C2 data. These CME were associated respectively with a C4.8-flare, with peak time 20:57 UTC on July 02 and with a M1.5-flare, with peak time 07:41 UTC on July 03, both of these flares are associated with NOAA AR 3730. Further analysis is ongoing. Further analysis of the CME, seen at 11:24 UTC on June 01 in LASCO C2 data, shows that while the bulk of the ejecta is expected to miss the Earth, a glancing blow is possible on July 05.

Vent solaire

Slow solar wind conditions were recorded over the past 24 hours. The solar wind speed varied within 320 - 420 km/s. The interplanetary magnetic field varied between 2 nT and 6 nT, with the Bz reaching a minimum value of -4 nT. The phi-angle was mainly in the positive sector (directed away from the Sun) with periods in the negative sector. The solar wind is may become perturbed late on July 03, due to the possible ICME arrival of a June 29 CME.

Géomagnétisme

Geomagnetic conditions were globally quiet (Kp 1-2) and locally quiet to unsettled (K_Bel 1-3). Unsettled to active conditions are expected in the next 24 hours.

Niveaux de flux de protons

Over the past 24 hours the greater than 10 MeV GOES proton flux was at background levels and is expected to remain so over the next days.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux measured by GOES 16 was below the 1000 pfu threshold and is expected to remain so in the upcoming days. The 24h electron fluence was at nominal level and is expected to remain so in the next days.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 185, sur la base de 08 stations.

Indices solaires pour 02 Jul 2024

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	164
AK Chambon La Forêt	007
AK Wingst	006
Ap estimé	008
Nombre international de taches solaires estimé	205 - Basé sur 15 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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