Affichage des archives de mercredi, 3 août 2022

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2022 Aug 03 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
03 Aug 2022	098	011
04 Aug 2022	098	011
05 Aug 2022	100	008

Bulletin

Solar flaring activity over the past 24 hours was at low levels with three C-class flares. A C4.2-class flare, peak time 15:33 UTC, and a C1.7-class flare, peak time 17:20 UTC, were produced by a region behind the west limb on Aug 02nd. Currently there are two active regions on the visible solar disc. NOAA AR 3068 (beta-gamma) underwent further growth and development, and produced a C1.3-class flare, peak time 02:24 UTC on Aug 3rd. NOAA AR 3070 has decayed into plage. The region in the north-eastern quadrant, now numbered as NOAA AR 3071 (alpha), remains simple and inactive. The flaring activity over the next 24 hours is expected to be at very low to low levels with probable isolated C-class flaring.

No Earth-directed coronal mass ejections (CMEs) were detected in the available coronagraph imagery over the past 24 hours.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours and is expected to remain so in the next 24 hours. The greater than 2 MeV electron flux has been below the1000 pfu threshold and is expected to remain below the threshold in the next 24 hours. The 24h electron fluence was at nominal levels and is expected to remain so over the next 24 hours.

Over the past 24 hours the solar wind parameters (ACE and DSCOVR) remained under the mild influence of a high speed stream (HSS). The solar wind velocity varied between 480 km/s and 560 km/s. The interplanetary magnetic field was weak to moderate with a maximum value of 8.2 nT and a weak Bz component reaching -5.6 nT. The B field remained in the negative sector (directed towards the Sun). The solar wind parameters are expected to remain slightly enhanced over the next 24 hours under the influence of the HSS.

The geomagnetic conditions over the past 24 hours were quiet to unsettled. Quiet to unsettled geomagnetic conditions are expected over the next 24 hours with possible isolated active periods.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 040, sur la base de 21 stations.

Indices solaires pour 02 Aug 2022

Nombre de Wolf, observé par Catania	040
Flux solaire à 10 cm	098
AK Chambon La Forêt	014
AK Wingst	012
Ap estimé	010
Nombre international de taches solaires estimé	036 - Basé sur 29 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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