Het archief bekijken van zaterdag 21 december 2024

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2024 Dec 21 1231 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Warning condition (activity levels expected to increase, but no numeric forecast given)

	10cm flux	Ap
21 Dec 2024	184	007
22 Dec 2024	186	007
23 Dec 2024	188	007

Zonnevlekkengebieden en zonnevlammen

A total of 9 numbered sunspot groups were identified on the disk over the past 24 hours. Solar flaring activity was moderate over the past 24 hours, with 1 M-class flare identified. Most of the activity came from the sunspot groups that rotated into view over the east limb in the past days. The largest flare was a M1.9 flare (SIDC Flare 3030) peaking on December 21 at 00:38 UTC, which was produced by SIDC Sunspot Group 341 (NOAA Active Region 3932). Solar flaring activity is expected to be moderate over the next 24 hours, with M-class flares likely and a chance for X-class flares.

Coronale massa uitstoten

No Earth directed CMEs were observed in the last 24 hours.

Coronale gaten

A small coronal hole, SIDC Coronal Hole 83 (equatorial coronal hole with a negative polarity) crossed central meridian on December 20.

Zonnewind

The solar wind at Earth has a speed around 470 km/s and interplanetary magnetic field around 8 nT (DSCOVR). The interplanetary magnetic field has a negative polarity (towards the Sun). Similar slow solar wind conditions are expected for the next 24 hours.

Geomagnetisme

Geomagnetic conditions have been quiet to unsettled both globally and locally (Kp and K_Bel up to 3). Similar conditions are expected for the next 24 hours.

Proton flux niveaus

The greater-than-10 MeV GOES proton flux has been slightly increasing since around 17:00 UTC on December 20. While it remains below the threshold and will probably not exceed it, the possibility of crossing the threshold within the next 24 hours cannot be excluded.

Elektronenfluxen in geostationaire baan

The greater than 2 MeV electron flux measured by GOES 16 and GOES 18 remained below the threshold level in the last 24 hours. It is expected to remain so over the next 24 hours. The 24-hour electron fluence is presently at normal levels and is expected to remain so over the next 24 hours.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 164, gebaseerd op 06 stations.

Zon indexen voor 20 Dec 2024

Wolfgetal Catania	212
10cm zonneflux	184
AK Chambon La Forêt	022
AK Wingst	016
Geschatte Ap	015
Geschat internationaal zonnevlekkengetal	154 - Gebaseerd op 21 stations

Overzicht opvallende gebeurtenissen

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

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