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Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2026 Feb 24 1233 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

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

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
24 Feb 2026	105	016
25 Feb 2026	104	014
26 Feb 2026	104	008

Régions solaires actives et éruptions solaires

Solar flaring activity was low over the past 24 hours, with only a C1.0 flare from the east limb (SIDC Flare 7063) peaking at 07:33 UTC on February 24. There are currently no numbered active regions on the solar disk. SIDC Sunspot Group 799 has decayed into a plage. The solar flaring activity is expected to be low over the next 24 hours, with C-class flares unlikely.

Éjection de masse coronale

No Earth-directed Coronal Mass Ejections (CMEs) were observed in the available coronagraph imagery in the last 24 hours.

Vent solaire

Over the past 24 hours, the solar wind parameters (ACE and DSCOVR) continued to reflect the ongoing influence of the high-speed stream associated with the recurrent, negative polarity, equatorial, coronal hole (SIDC Coronal Hole 147). Speed values ranged between 560 km/s and 720 km/s. The interplanetary magnetic field values were between 3 nT and 5 nT. The Bz component varied between -5 nT and 5 nT. The interplanetary magnetic field angle was mostly in the negative sector. Enhanced solar wind conditions may persist over the next 24 hours due to the continued influence of the high- speed stream.

Géomagnétisme

Geomagnetic conditions globally and locally were mostly at quiet to active levels (NOAA Kp 2 to 4+, K BEL 2 to 4). Quiet to active conditions are expected over the next 24 hours due to the continued influence of the high-speed stream from the negative polarity coronal hole (SIDC Coronal Hole 147).

Niveaux de flux de protons

The greater than 10 MeV proton flux was below the 10 pfu threshold level over the past 24 hours. It is expected to remain below the threshold level over the next 24 hours.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux measured by GOES 18 and GOES 19 was mostly above the 1000 pfu threshold in the last 24 hours, with short intervals in which it fell below the 1000 pfu threshold. The greater than 2 MeV electron flux is expected to remain around the 1000 pfu threshold levels in the next 24 hours. The 24-hour electron fluence is presently at moderate levels and is expected to remain so over the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 10 stations.

Indices solaires pour 23 Feb 2026

Nombre de Wolf, observé par Catania	036
Flux solaire à 10 cm	108
AK Chambon La Forêt	032
AK Wingst	028
Ap estimé	028
Nombre international de taches solaires estimé	009 - Basé sur 25 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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