Affichage des archives de samedi, 25 novembre 2023

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2023 Nov 25 1300 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

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

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
25 Nov 2023	178	022
26 Nov 2023	220	024
27 Nov 2023	270	016

Régions solaires actives et éruptions solaires

Solar flaring activity was moderate over the past 24 hours. NOAA AR 3490 was the source of the flare with the highest output in X-ray over the past 24 hours, the C5.5 flare, which peaked at 24 November 22:20 UT.

Éjection de masse coronale

A CME as seen in Lasco C2 on 24 November 10:00 UT is believed to be associated with the M1.1 flare with source region 3489, occurring on 24 November 09:34 UT. The CME has the potential of a glancing blow early 27 of November.

Trous coronaux

The mid latitude positive polarity coronal hole is in geo- effective position.

Vent solaire

A shock in the solar wind at 07:55 UTC on November 15 marks the arrival of the ICME from November 22. The speed jumped from 490 km/s to 540 km/s and the interplanetary magnetic field from 9 to 14 nT. Further high speed stream influences and a possible second ICME arrival (from CME occurring at 22 November 21:12UT) can be expected over the next 24 hours.

Géomagnétisme

The arrival of the ICME from November 22 created minor storm geomagnetic conditions globally (Kp 5) and active conditions locally (K_Bel 4). A combination of influences from a high speed stream and a possible second ICME arrival (from CME occurring at 22 November 21:12UT) can be expected over the next 24 hours.

Niveaux de flux de protons

Over the past 24 hours the greater than 10 MeV GOES proton flux was below threshold and is expected to most likely remain so over the next 24 hours, but keeping in mind the presence of multiple magnetically complex regions on disk.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux crossed the 1000 pfu threshold on 24 November 14:15UT, as measured by GOES 16. It is expected to be at moderate levels in the next 24 hours. The 24 hour electron fluence was close to moderate levels, it is expected to be about moderate levels for the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 182, sur la base de 11 stations.

Indices solaires pour 24 Nov 2023

Nombre de Wolf, observé par Catania	205
Flux solaire à 10 cm	178
AK Chambon La Forêt	019
AK Wingst	010
Ap estimé	008
Nombre international de taches solaires estimé	175 - Basé sur 20 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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