Het archief bekijken van vrijdag 18 oktober 2024

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2024 Oct 18 1231 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Quiet

	10cm flux	Ap
18 Oct 2024	172	012
19 Oct 2024	175	017
20 Oct 2024	175	007

Zonnevlekkengebieden en zonnevlammen

Solar flaring activity was low over the past 24 hours. The largest flare was a C6.6-flare, with peak time 14:27 UTC on October 17 2024, from SIDC Sunspot Group 290 NOAA AR 3860 (beta). There are currently 8 numbered active regions on the visible disk. SIDC Sunspot group 285 (NOAA AR 3856) is the most complex AR (beta-gamma-delta).The solar flaring activity is expected to be at moderate levels over the coming day with C-class flares expected and M-class flares probable and a chance of X-class flares.

Coronale massa uitstoten

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

Coronale gaten

The small equatorial positive polarity mid-latitude coronal hole crossed the central meridian. A high-speed stream from this coronal hole may enhance the solar wind environment near Earth on October 21.

Zonnewind

The solar wind at the Earth is slow. The solar wind speed decreased from around 400 km/s to 370 km/s and interplanetary magnetic field around 8 nT with the Bz reaching a minimum value of -7 nT. No enhancement of the solar wind speed and magnetic field is expected in the next 24h.

Geomagnetisme

Geomagnetic conditions were quiet to unsettled (both NOAA Kp and local K Belgium 3) over the past 24 hours. Quiet conditions are expected in the next 24 hours.

Proton flux niveaus

The greater than 10 MeV proton flux remained below the 10 pfu threshold and is expected to remain so over the next days.

Elektronenfluxen in geostationaire baan

The greater than 2 MeV electron flux as measured by GOES 18 was shortly above the 1000 pfu alert threshold on OCT17 21:30 UTC, and has a small chance to exceed this level again shortly during the next 24 hours. The 24h electron fluence was at nominal levels and is expected to remain so.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 126, gebaseerd op 08 stations.

Zon indexen voor 17 Oct 2024

Wolfgetal Catania	179
10cm zonneflux	174
AK Chambon La Forêt	017
AK Wingst	010
Geschatte Ap	010
Geschat internationaal zonnevlekkengetal	143 - Gebaseerd op 20 stations

Overzicht opvallende gebeurtenissen

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

Alle tijden in UTC

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