Detailed Information

Solar Activity

Solar activity over the past 24 hours was categorized as eruptive.

Three C-class solar flares were observed, with no M-class or X-class flares. The most significant event was a C1.6 flare from NOAA 14537, peaking at 11:31UT. No solar radio bursts of Type II, Type III, or Type IV were observed. Furthermore, no coronal mass ejections were observed during this period. On the visible disk, nine active regions were identified by SDO/HMI, namely NOAA 14533, NOAA 14534, NOAA 14535, NOAA 14536, NOAA 14537, NOAA 14538, NOAA 14539, NOAA 14540, and NOAA 14541. Concurrently, no BBSO H-alpha plages were observed. One farside region is identified as due to return between September 24 and September 26.

Looking ahead, solar activity for the next 24 hours is predicted to remain eruptive, driven by a Random Forest model prediction of a maximum C-class flare.

Geomagnetic Activity

The geomagnetic activity was on quiet level for the last 24 hours.
The solar wind speed stable around 298 km/s, north-south component of interplanetary magnetic field fluctuate between -3.5 nT and 3.7 nT Corona hole at was not geoeffective.
Quiet level geomagnetic activity is expected for the next 24 hours.

Ionospheric Activity

Ionosfer was in quite conditions on 24 hours.
There was no depression in the foF2 from its median in the last 24 hours. There was no increment in fmin exceeding 30% of its median value in the last 24 hours. There was Spread-F event during 165 minutes in the last 24 hours. Sporadic E-layer during the day and night for 510 minutes with foEs values ​​higher than foF2 values ​​in the last 24 hours. The ionospheric scintillation index (S4) above Pontianak, had a value below 0.5 at a quite level and the maximum TEC value was 59.4 both observed above Pontianak.
The ionosphere activity is predicted to be quite 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 quite level, and the Short-Wave Fadeout (SWF) was at a quite level.
The MUF depression for the next 24 hours is predicted at a quite level, due to previous geomagnetic activity.
The SWF for the next 24 hours is predicted at a quite 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 quiet over the past 24 hours.

These quiet conditions are expected to continue for the next 24 hours.