Affichage des archives de mercredi, 22 mai 2024

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2024 May 22 1232 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Warning condition (activity levels expected to increase, but no numeric forecast given)

	Flux de 10 cm	Ap
22 May 2024	191	007
23 May 2024	185	007
24 May 2024	181	011

Régions solaires actives et éruptions solaires

There are nine visible ARs on the solar disk. There were three M-class flares in the last 24 hours, from NOAA 3679 (beta-gamma magnetic field configuration) and 3683 (beta magnetic field configuration. The strongest one was an M2.3 peaking at 04:04 UTC from NOAA AR 3683. NOAA AR 3685 (beta gamma magnetic field configuration) has grown in size and has also potential for strong flares. More M-class flares can be expected, and X-class flares are possible, in the next 24 hours.

Éjection de masse coronale

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

Trous coronaux

A negative polarity coronal hole in the northern hemisphere has developed a low latitudinal extension that traversed the central meridian on 21 May. A possible arrival of high speed steam from this coronal hole could arrive at the Earth on 24 May.

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.

Géomagnétisme

Geomagnetic conditions have been quiet in the last 24 hours (Kp and K_BEL up to 2). Similar quiet conditions can be expected for the next 24 hours.

Niveaux de flux de protons

The 10 MeV GOES-18 proton flux was below threshold in the past 24 hours. Since the regions producing the M-class flaring are close to the west limb, a proton event cannot be discarded 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 : 162, sur la base de 09 stations.

Indices solaires pour 21 May 2024

Nombre de Wolf, observé par Catania	177
Flux solaire à 10 cm	191
AK Chambon La Forêt	011
AK Wingst	010
Ap estimé	009
Nombre international de taches solaires estimé	167 - Basé sur 22 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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