Het archief bekijken van zondag 22 oktober 2023

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2023 Oct 22 1235 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Quiet

	10cm flux	Ap
22 Oct 2023	121	012
23 Oct 2023	119	015
24 Oct 2023	119	021

Zonnevlekkengebieden en zonnevlammen

The solar flaring activity was at very low levels. No significant flaring activity has been recorded. NOAA AR 3467 and 3465 decayed into plage regions. The three remaining regions on disk, NOAA ARs 3469, 3468 and 3470 were stable and quiet. The solar flaring activity is expected to be at very low levels over the next 24 hours with a low probability of C-class flares.

Coronale massa uitstoten

No Earth directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph imagery.

Coronale gaten

A small equatorial positive polarity coronal hole began to transit the central meridian on October 22.

Zonnewind

The solar wind parameters were indicative of ongoing weak transient magnetic structures, possibly associated to one of the predicted glancing blow CME arrivals. The interplanetary magnetic field ranged between 2 and 9nT. Bz was predominantly negative with a minimum Bz of -7nT. The solar wind speed was at background levels between 270 and 320 km/s. The interplanetary magnetic field orientation continually switched between the positive sector (field directed away from Sun) and the negative sector (field directed towards the Sun). The interplanetary magnetic field is expected to remain slightly enhanced on 22, due to ongoing possible CME influences. The expected interaction region and weak high-speed stream from the small negative polarity coronal hole, which crossed the central meridian on 19, could increase the solar wind speed slightly over the next days.

Geomagnetisme

During last 24 hours the geomagnetic conditions were at unsettled levels at the start of the period and then decreased to quiet levels from 21:00 UTC October 22 (NOAA KP 1-3+ and K Bel 1-3). Geomagnetic conditions are expected to be at quiet to unsettled on October 22, with active intervals possible from October 23, due the influence of the high speed stream.

Proton flux niveaus

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

Elektronenfluxen in geostationaire baan

The greater than 2 MeV electron flux remained below the 1000 pfu threshold as measured by GOES 16. It is expected to remain below this threshold over the next days. The 24 hour electron fluence was at nominal levels. The electron fluence is expected to be at nominal levels for the next days.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 054, gebaseerd op 14 stations.

Zon indexen voor 21 Oct 2023

Wolfgetal Catania	///
10cm zonneflux	123
AK Chambon La Forêt	018
AK Wingst	023
Geschatte Ap	024
Geschat internationaal zonnevlekkengetal	072 - Gebaseerd op 11 stations

Overzicht opvallende gebeurtenissen

Aangeboden door het Solar Influences Data Analysis Center© - SIDC - Verwerkt door SpaceWeatherLive

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