Het archief bekijken van zondag 20 augustus 2023

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2023 Aug 20 1234 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

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

Proton Flux monitor

Quiet

	10cm flux	Ap
20 Aug 2023	148	015
21 Aug 2023	146	011
22 Aug 2023	145	007

Zonnevlekkengebieden en zonnevlammen

The solar flaring activity was at low levels. The largest flare was a C3.7 flare peaking at 06:26 UTC on August 20, associated with NOAA AR3409. NOAA AR3409 has, however, decayed significantly over the period. NOAA AR 3403 also produced low C-class flares. The remaining regions were mostly stable or in decay and were quiet. The solar flaring activity is expected to be at low levels over the next 24 hours with C-class flares likely and a low chance for isolated M-class flares.

Coronale massa uitstoten

There were no Earth-directed Coronal Mass Ejections (CMEs) detected in the available coronagraph observations.

Zonnewind

The solar wind parameters showed further enhancement. The interplanetary magnetic field increased from 3 nT to near 10nT. Bz had a minimum value of -6 nT. The solar wind speed increased further from 450km/s to 690 km/s. The interplanetary magnetic field orientation was predominantly in the negative sector (field directed towards the Sun). The solar wind parameters are expected to remain enhanced on August 20 and 21, while the Earth remains under the influence for the high-speed stream, slowly returning to nominal conditions from on August 22.

Geomagnetisme

During last 24 hours the geomagnetic conditions were at quiet to unsettled levels (NOAA KP 1-3, K Bel 1-3). Geomagnetic conditions are expected to be at unsettled levels, with isolated active periods possible on August 20 due to the ongoing high speed stream influence.

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 on August 20 and is likely to increase on August 21 and 22. 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: 107, gebaseerd op 25 stations.

Zon indexen voor 19 Aug 2023

Wolfgetal Catania	///
10cm zonneflux	151
AK Chambon La Forêt	019
AK Wingst	012
Geschatte Ap	010
Geschat internationaal zonnevlekkengetal	134 - Gebaseerd op 23 stations

Overzicht opvallende gebeurtenissen

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

Alle tijden in UTC

<< Keer terug naar de dagelijkse overview pagina