Affichage des archives de samedi, 7 novembre 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Nov 07 1244 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 Nov 2020	094	006
08 Nov 2020	094	007
09 Nov 2020	094	007

Bulletin

The sunspot region (Catania sunspot group 50, NOAA-AR 2781) has continued to show some flaring activities, including a C1.8-class flare peaking at 06:16 UTC on November 7. The flaring activity is expected to continue with C-class flare coming from NOAA-AR 2781, and with a small chance of M-class flare. Erratum: The Ursigram issued on November 06 mentioned a "C9.0-class flare peaking at 21:56 UTC on November 5". This was incorrect, the biggest flare for that period was a C2.8-class flare peaking at 00:05 UTC on November 6. The biggest flare for that specific region remained so far the C7.3-class flare peaking at 00:22 UTC on November 5.

No Earth directed coronal mass ejections was observed in the available coronagraphic imagery in the last 24 hours.

The greater than 10 MeV proton flux was at background levels over the past 24 hours. It is expected to stay at background levels for the next 24 hours. The greater than 2 MeV electrons flux remained just below the 10^3 pfu threshold. The electrons flux may cross slightly be above the 10^3 pfu during the next 24 hours.

The Earth continued to be under the influence of the solar wind streams affected by the presence of the south polar coronal hole (negative polarity). The solar wind parameters (DSCOVR) showed slightly enhanced values, with the solar wind speed around 500 km/s, the total interplanetary magnetic field reaching 7.9 nT, and the Bz magnetic field components fluctuating between -4.3 nT and 7.0 nT. The solar wind parameters are expected to remain slightly enhanced today due to the influence of the solar wind coming from the south coronal hole.

Geomagnetic conditions were mostly quiet. In response to the slight enhanced solar wind parameters one period of unsettled conditions was also observed in Kp-NOAA index (15:00-18:00 UTC on November 6) and several periods of unsettled conditions were observed in K-Dourbes index. The geomagnetic conditions are expected to be mostly quiet with possible periods of unsettled conditions.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 034, sur la base de 16 stations.

Indices solaires pour 06 Nov 2020

Nombre de Wolf, observé par Catania	044
Flux solaire à 10 cm	094
AK Chambon La Forêt	014
AK Wingst	009
Ap estimé	008
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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