Het archief bekijken van donderdag 12 maart 2026

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2026 Mar 12 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
12 Mar 2026	124	007
13 Mar 2026	120	014
14 Mar 2026	120	012

Zonnevlekkengebieden en zonnevlammen

Solar flaring activity was low over the past 24 hours, with only C-class flares identified. The largest flare was a C4.0 flare (SIDC Flare 7173) peaking on March 12 at 10:46 UTC, which was produced by SIDC Sunspot Group 805 (NOAA Active Region 4384, magnetic type Beta). A total of 9 numbered sunspot groups were identified on the disk over the past 24 hours, all having alpha or beta magnetic configuration. Solar flaring activity is expected to be low over the next 24 hours, with C-class flares very likely and a chance for M-class flares.

Coronale massa uitstoten

No Earth-directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph images over the past 24 hours.

Coronale gaten

A large positive polarity transequatorial coronal hole (SIDC Coronal Hole 154) is still crossing the central meridian. The associated high-speed stream is expected to arrive at Earth starting late on March 13.

Zonnewind

Over the past 24 hours, solar wind parameters (ACE and DSCOVR) were slow, with the solar wind speed reaching values up to 450 km/s. The interplanetary magnetic field remained weak, below 7 nT, with the Bz reaching a minimum value of - 5nT. Slow solar wind conditions are expected over the next 24 hours, with a chance of a weak enhancement from late on March 13 due to the arrival of a high-speed stream from the large positive polarity coronal hole (SIDC Coronal Hole 154).

Geomagnetisme

Geomagnetic conditions were globally and locally quiet to unsettled (NOAA Kp = 3-, K_bel 2) over the past 24 hours. Mostly quiet to unsettled geomagnetic conditions are expected over the next 24 hours.

Proton flux niveaus

The greater than 10 MeV proton flux, as measured by the GOES-19 satellite, was at background levels over the past 24 hours and is likely to remain so in the next 24 hours.

Elektronenfluxen in geostationaire baan

The greater than 2 MeV electron flux measured by GOES-18 and GOES-19 was above the 1000 pfu threshold for the main part of the reporting period. The greater than 2 MeV electron flux may exceed the 1000 pfu threshold over the next 24 hours. The electron fluence was at moderate levels and is expected to remain at these levels over the next 24 hours.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 104, gebaseerd op 21 stations.

Zon indexen voor 11 Mar 2026

Wolfgetal Catania	125
10cm zonneflux	123
AK Chambon La Forêt	012
AK Wingst	010
Geschatte Ap	011
Geschat internationaal zonnevlekkengetal	116 - Gebaseerd op 20 stations

Overzicht opvallende gebeurtenissen

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

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