Het archief bekijken van woensdag 16 september 2026

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2026 Sep 16 1231 UTC

SIDC Prognose

Zonnevlammen

Quiet conditions (<50% probability of C-class flares)

Geomagnetisme

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

Proton Flux monitor

Quiet

	10cm flux	Ap
16 Sep 2026	107	021
17 Sep 2026	105	007
18 Sep 2026	103	007

Zonnevlekkengebieden en zonnevlammen

Solar flaring activity was very low over the past 24 hours. The X-ray flux was below C level. A total of 2 numbered sunspot groups were identified on the disk over the past 24 hours, as several sunspot groups rotated out of view over the west limb. Solar flaring activity is expected to be very low over the next 24 hours, with a chance for C-class flares.

Coronale massa uitstoten

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

Coronale gaten

SIDC Coronal Hole 142 is at mid to high latitude in the northern hemisphere, it crossed central meridian on September 13.

Zonnewind

Over the last 24 hours, the solar wind at Earth was influenced by the arrival of a high-speed stream (HSS) from SIDC Coronal Hole 142 (negative polarity), alongside a likely glancing blow from SIDC CME 721 (from 13 September). Although solar wind speeds spiked at 800 km/s (as measured by ACE, SOLAR-1, and IMAP), the interplanetary magnetic field remained at moderate levels (reaching 16 nT) with a mostly positive Bz. The solar wind speed is currently at 550 km/s with interplanetary magnetic field of 6 nT. In the next 24 hours, we may observe a continuation of disturbed conditions before going back to slow solar wind.

Geomagnetisme

Geomagnetic conditions have reached active conditions at planetary levels and unsettled locally (Kp up to 4 and K_Bel up to 3) in the last 24 hours. Similar conditions with minor storm periods possible can be expected for the next 24 hours.

Proton flux niveaus

The proton flux on GOES-18 is at background levels.

Elektronenfluxen in geostationaire baan

The greater than 2 MeV electron flux, as measured by GOES-18 and GOES-19, remained mostly below the 1000 pfu alert threshold over the past 24 hours. The greater than 2 MeV electron flux may exceed the alert threshold over the next 24 hours.The 24-hour electron fluence was at normal levels and is expected to remain at normal levels over the next 24 hours.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 027, gebaseerd op 20 stations.

Zon indexen voor 15 Sep 2026

Wolfgetal Catania	049
10cm zonneflux	107
AK Chambon La Forêt	014
AK Wingst	008
Geschatte Ap	008
Geschat internationaal zonnevlekkengetal	043 - Gebaseerd op 27 stations

Overzicht opvallende gebeurtenissen

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

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