Affichage des archives de jeudi, 22 juin 2023

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2023 Jun 22 1230 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
22 Jun 2023	176	007
23 Jun 2023	173	003
24 Jun 2023	168	003

Régions solaires actives et éruptions solaires

Solar flaring activity was moderate during the last 24 hours. Three M1 flares were detected, the first yesterday at 12:44 UT from NOAA Active Region (AR) 3341 (magnetic type Beta, Catania group 40), the second yesterday at 16:56 UT from NOAA AR 3337 (magnetic type Beta, Catania group 43), and the third today at 11:21 UT also from NOAA AR 3341. Isolated M-class activity is likely in the next 24 hours, mainly from NOAA AR 3341.

Éjection de masse coronale

No Earth-directed Coronal Mass Ejections (CME) were observed in the last 24 hours. A full halo CME automatically detected by CACTus as launched yesterday 10:24 UT is judged to be two separate back- sided events.

Vent solaire

The Solar Wind (SW) conditions were typical of the slow SW regime and stable during the last 24 hours. The SW speed increased marginally and ranged between 450 and 490 km/s in the last 24 hours. The total interplanetary magnetic field (Bt) varied between 5 and 8 nT and its North-South component (Bz) ranged between -7 and 7 nT. The interplanetary magnetic field phi angle was predominately directed towards the Sun during the past 24 hours. The SW conditions are expected to remain in the slow SW regime in the next 24 hours.

Géomagnétisme

Geomagnetic conditions were unsettled to quiet both globally and locally (NOAA Kp 1 to 3+ and K BEL 2 to 3) during the past 24 hours. They are expected to drop to quiet levels both globally and locally for the next 24 hours.

Niveaux de flux de protons

The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is expected to remain so for the next 24 hours.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux was marginally below the 1000 pfu threshold during the last 24 hours. For the next 24 hours it is expected to gradually drop further. The 24-hour electron fluence dropped from moderate to nominal levels yesterday 17:00 UT. It is expected to very gradually drop further in the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 231, sur la base de 14 stations.

Indices solaires pour 21 Jun 2023

Nombre de Wolf, observé par Catania	214
Flux solaire à 10 cm	176
AK Chambon La Forêt	012
AK Wingst	009
Ap estimé	008
Nombre international de taches solaires estimé	219 - Basé sur 21 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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