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Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2024 May 26 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
26 May 2024	152	007
27 May 2024	154	007
28 May 2024	156	007

Régions solaires actives et éruptions solaires

There are seven visible ARs on the solar disk. Solar activity has been low, only C-class flaring in the last 24 hours. The region that was creating most of the activity, NOAA AR 3679, has now rotated out of view. The strongest flare was a C5.3 one peaking at 09:36 UTC, from NOAA AR 3691. This is the AR that caused several X-flares in the last rotation. Still showing a beta-gamma-delta magnetic field configuration, this AR has potential for strong flares, but seems so far calmer than in the previous rotation. More C-class flares can be expected and M-class flares are possible.

Éjection de masse coronale

No Earth directed CME has been observed in the last 24 hours.

Vent solaire

The solar wind at the Earth is slow, with speeds around 360 km/s and interplanetary magnetic field around 6 nT. Similar conditions can be expected for the next 24 hours. There are low chances of a glancing blow of the CME from 23 May after that.

Géomagnétisme

Geomagnetic conditions have been mostly quiet both at planetary and local levels (Kp and K_Bel up to 3).Similar conditions can be expected in the next 24 hours. A glancing blow from the 23 May CME (with low chances of arrival) may create active conditions.

Niveaux de flux de protons

The 10 MeV GOES-18 proton flux was below threshold in the past 24 hours and is expected to remain so in the next 24 hours.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux from GOES 16 was below the threshold level in the last 24 hours. It is expected to remain below the threshold during the next 24 hours. The electron fluence was at normal levels for the last 24 hours and is expected to remain so.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 113, sur la base de 16 stations.

Indices solaires pour 25 May 2024

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	152
AK Chambon La Forêt	010
AK Wingst	009
Ap estimé	007
Nombre international de taches solaires estimé	104 - 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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