Detailed Information

Solar Activity

Solar activity has been quiet over the past 24 hours. There were no C-class, M-class, or X-class flares observed, and consequently, no solar radio bursts were detected. Three coronal mass ejections (CMEs) were observed. One CME was detected emanating from the west limb, traveling at approximately 1736 kilometers per second with an angular width of 8 degrees.

On the visible disk, SDO/HMI instruments identified four active regions: NOAA 14524, NOAA 14527, NOAA 14528, and NOAA 14529. Additionally, three H-alpha plages were noted by BBSO, corresponding to NOAA 14525, NOAA 14526, and NOAA 14530. There are no active regions currently returning from the farside. Looking ahead, solar activity is predicted to remain quiet for the next 24 hours, with no flares of any class anticipated by the Random Forest model.
 

Geomagnetic Activity

The geomagnetic activity was on quiet level for the last 24 hours.

The solar wind speed stable around 381 km/s, north-south component of interplanetary magnetic field fluctuate between -6.4 nT and 4.5 nT There were geoeffective coronal holes at north-east and central equator, while the others at north pole, north-east and north-west were not geoeffective. CME on 14 September 2026 11:12 UT was mainly errupted toward west with speed of 657 km/s and angular width of 48°. The CME was geoeffective and is likely to have not impact on next 24 hours.

Quiet level geomagnetic activity is expected for the next 24 hours.

Ionospheric Activity

Ionosphere was in moderate conditions on 24 hours.

There was depression in the foF2 of its median value for 135 minutes in the last 24 hours. There was an increment in fmin exceeding 30% of its median value for 150 minutes in the last 24 hours. There was a Spread-F Event for 45 minutes in the last 24 hours. Sporadic E-layer during the day and night for 990 minutes with foEs values higher than foF2 values in the last 24 hours. The ionospheric scintillation index (S4) above Agam was less than 0.5 (quiet) and the maximum TEC value was 56.73 (quiet) both observed above Pontianak.

The ionosphere activity is predicted to be quiet for the next 24 hours.

Navigation

The error of the single frequency GPS positioning for the next 24 hours was on normal level, based on ionospheric scintillation and TEC variation.

Based on ionospheric scintillation and TEC variation, the probability of error positioning for the next 24 hours is predicted to be on normal level.

HF Radio Communication

In the last 24 hours, the Maximum Usable Frequency (MUF) Depression was at a Strong level, and the Short-Wave Fadeout (SWF) was at a Strong level.

The MUF depression for the next 24 hours is predicted at a quiet level, due to previous geomagnetic activity.

The SWF for the next 24 hours is predicted at a quiet level due to the prediction of a solar flare.
 

Satellites

The electron flux was on high level for the last 24 hours.

Low level of electron flux is expected for the next 24 hours.

The 10 MeV proton flux remained elevated over the past 24 hours, with an event currently in progress. This elevated proton event is predicted to continue for the next 24 hours.