Het archief bekijken van woensdag 4 augustus 2021

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2021 Aug 04 1231 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
04 Aug 2021	076	004
05 Aug 2021	076	004
06 Aug 2021	076	004

Bulletin

Beta region NOAA 2850 showed signs of decay in the past 24 hours, and produced a B6.1 flare peaking at 6:23 UT on August 4. The chance for a C flare in the next 24 hours is estimated at 30%.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours. The greater than 2 MeV electron flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours. The greater than 2 MeV electron fluence was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours.

The solar wind speed near Earth as registered by DSCOVR varied between about 300 and 375 km/s during the past 24 hours. The Interplanetary Magnetic Field (IMF) was oriented predominantly away from the Sun, and its magnitude varied between about 1 and 8 nT, with current values around 4 nT. Bz was below -5 nT between about 20:00 and 21:00 UT on August 3, with a minimum of about -6 nT. Nominal solar wind conditions are expected in the next 24 hours.

Quiet geomagnetic conditions (K Dourbes between 1 and 2; NOAA Kp between 0 and 2) were registered in the past 24 hours. Quiet to unsettled levels (K Dourbes < 4) are expected on August 4, 5 and 6.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 016, gebaseerd op 20 stations.

Zon indexen voor 03 Aug 2021

Wolfgetal Catania	015
10cm zonneflux	076
AK Chambon La Forêt	012
AK Wingst	010
Geschatte Ap	012
Geschat internationaal zonnevlekkengetal	016 - Gebaseerd op 36 stations

Overzicht opvallende gebeurtenissen

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

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