Het archief bekijken van donderdag 7 september 2023

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2023 Sep 07 1231 UTC

SIDC Prognose

Zonnevlammen

C-class flares expected, (probability >=50%)

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Quiet

	10cm flux	Ap
07 Sep 2023	147	007
08 Sep 2023	150	007
09 Sep 2023	150	007

Zonnevlekkengebieden en zonnevlammen

There are presently eight numbered active regions observed at the visible side of the solar disc and four of them have beta configuration of the photospheric magnetic field. Solar flaring activity was during last 24 hours at the C-class level. Catania sunspot group 44 (NOAA AR 3423) has, during last 24 hours, strongly increased in the area, sunspot number and complexity of its photospheric magnetic field. Similar behavior was observed for Catania sunspot group 41 (NOAA AR 3421). We expect these two active regions to be source of majority of the flaring activity in the coming hours. We expect C-class but also an isolated M-class flares.

Coronale massa uitstoten

During last 24 hours there were no Earth directed CMEs detected in the available coronagraph data.

Zonnewind

Earth is presently inside the slow solar wind with velocity of about 380 km/s. The interplanetary magnetic field magnitude is about 5 nT.

Geomagnetisme

During last 24 hours the geomagnetic conditions were quiet to unsettled, and we expect them to stay so in the comming hours. The solar wind, originating from the negative polarity coronal hole which crossed central meridian on September 03, can be expected at Earth later today.

Proton flux niveaus

The greater than 10 MeV proton flux was at the background levels and we do not expect significant change in the coming hours. As the complex Catania sunspot group 41 (NOAA AR 3421) is approaching to the West solar limb, the strong flaring activity from this region in the coming days, could be associated with the particle event.

Elektronenfluxen in geostationaire baan

The greater than 2 MeV electron flux has continue to fluctuate around the 1000 pfu threshold. The 24h electron fluence is at normal level. We do not expect significant change in these parameters in the coming hours.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 138, gebaseerd op 18 stations.

Zon indexen voor 06 Sep 2023

Wolfgetal Catania	178
10cm zonneflux	147
AK Chambon La Forêt	011
AK Wingst	008
Geschatte Ap	008
Geschat internationaal zonnevlekkengetal	133 - Gebaseerd op 29 stations

Overzicht opvallende gebeurtenissen

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

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