Detailed Information

Solar Activity

Solar activity over the past 24 hours was active.

The Sun produced three solar flares, including two C-class flares and one M-class flare. The most significant event was an M4.0 flare from NOAA 14482, peaking at 14:19 UT. No X-class flares were observed. Associated with this flare activity, no solar radio bursts were reported. Five coronal mass ejections were observed, with the fastest event on the west limb exhibiting a speed of 1819 km/s and an angular width of 26 degrees. An event on the east limb was observed at 574 km/s with an angular width of 16 degrees. On the visible disk, three active regions were identified by SDO/HMI: NOAA 14481, NOAA 14482, and NOAA 14485. Additionally, two H-alpha plages were observed by BBSO, identified as NOAA 14483 and NOAA 14484. There are no farside regions currently expected to return.

Based on today's condition, solar activity for the next 24 hours is predicted to be active based on the Random Forest prediction model.

Geomagnetic Activity

The geomagnetic activity was at a minor storm level for the last 24 hours.

The solar wind speed fluctuates between 362 km/s and 466 km/s, and the north-south component of the interplanetary magnetic field fluctuates between -8.0 nT and 5.8 nT. There was a geoeffective coronal hole at the central equator, while the others at the eastern equator and north-east were not geoeffective. CME on 08 July 2026 11:36 UT was mainly erupted toward the west with a speed of 625 km/s and an angular width of 6°. The CME was geoeffective and is likely to have no impact on the next 24 hours.

Minor storm-level geomagnetic activity is expected for the next 24 hours.
 

Ionospheric Activity

The ionosphere was in Minor conditions for the last 24 hours.

There was a depression of foF2 lower than 30% of its median value for 90 minutes for the last 24 hours. There was no increment of fmin more than 30% of its median value for the last 24 hours. There was no The Spread-F occurred for the last 24 hours. The Sporadic-E occurred in the night and daytime for 1290 minutes, with foEs value exceeding the foF2 for the last 24 hours.

S4 index values (condition of ionospheric scintillation ) were less than 0.5 over Pontianak, which is predicted to be the Quiet Level

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

Navigation

Based on TEC and scintillation, the error of the single-frequency GPS positioning for the last 24 hours was at a normal level.

Based on ionospheric scintillation and TEC variation, the probability of error positioning in the next 24 hours is predicted at a Normal level.

 

HF Radio Communication

MUF depression was in Moderate condition and Short Wave Fadeout (SWF) was in Quiet for the last 24 hours.

The MUF depression for next 24 hours is predicted on Minor level, due to previous of geomagnetic activity

The SWF on for next 24 hours is predicted in Minor level due to the prediction of solar flare.

Satellites

The electron flux was at a low level for the last 24 hours.

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

The 10 MeV proton flux remained quiet over the past 24 hours.

Based on these conditions, the proton flux is predicted to remain quiet for the next 24 hours.