Detailed Information

Solar Activity

Solar activity remained quiet over the past 24 hours.

No C-class, M-class, or X-class flares were observed, indicating an absence of significant flare activity. Consequently, no solar radio bursts of Type II, Type III, or Type IV were reported. Furthermore, no coronal mass ejections were detected during this period. On the visible disk, two active regions, NOAA 14535 and NOAA 14544, were observed by SDO/HMI. Additionally, three H-alpha plages, NOAA 14533, NOAA 14539, and NOAA 14542, were identified by BBSO. There are no farside regions currently expected to return to the visible disk. 

Solar activity for the next 24 hours is predicted to be eruptive, with the Random Forest model forecasting a maximum flare class of C.

Geomagnetic Activity

The geomagnetic activity was on quiet level for the last 24 hours.
The solar wind speed stable around 294 km/s, north-south component of interplanetary magnetic field fluctuate between -3.0 nT and 2.6 nT. Coronal holes at eastern equator, north-east and south-west were not geoeffective. CME on 30 September 2026 03:12 UT was mainly errupted toward west with speed of 325 km/s and angular width of 128°. 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 Quiet level for the last 24 hours.

There was no depression of foF2 lower than 30% of its median values.There was no increment of fmin more than 30% of its median values. The Spread-F occured for 525 minutes. The Sporadic E layer occured in the night and daytime for 600 minutes with foEs value exceeded the foF2 for 120 minutes. The S4 index values (condition of ionospheric scintillation) was on Quiet (S4 < 0.5) level last 24 hours over Agam. The TEC values was on Quiet (VTEC < 125) level last 24 hours over Agam.

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

Navigation

For the last 24 hours, the error of the single-frequency GPS positioning was on Normal level.

The probability of error positioning for the next 24 hours is predicted to be Normal, based on scintillation and TEC variations.
 

HF Radio Communication

The MUF(Maximum Usable Frequency) depression was in Quiet condition, and the SWF (Short Wave Fadeout) was in Quiet for the last 24 hours.

The MUF depression for the next 24 hours is predicted to be Quiet, based on the prediction of geomagnetic activity.

The SWF for the next 24 hours is predicted to be Quiet, based on the prediction of Solar activity.
 

Satellites

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

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

Proton flux at 10 MeV remained at quiet levels over the past 24 hours.
These quiet conditions are expected to persist for the next 24 hours.