Detailed Information

Solar Activity

Solar activity over the past 24 hours was eruptive. Seven C-class solar flares were observed, with no M-class or X-class flares. The most significant event was a C7.8 flare originating from NOAA 14387, peaking at 20:38UT. Associated with this activity, one Type III solar radio burst was detected, while no Type II or Type IV radio bursts were observed. Furthermore, no coronal mass ejections were observed during this period.
On the visible disk, five active regions were identified by SDO/HMI: NOAA 14378, NOAA 14381, NOAA 14384, NOAA 14387, and NOAA 14388. Additionally, BBSO H-Alpha observations revealed three plages: NOAA 14379, NOAA 14380, and NOAA 14385. No farside regions were observed returning to the visible disk. Looking ahead, solar activity for the next 24 hours is predicted to remain eruptive, with the Random Forest model predicting a maximum flare class of C.

Geomagnetic Activity

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

The solar wind speed decreased from 602 km/s to 428 km/s, north-south component of the interplanetary magnetic field fluctuated between -7.9 nT and 6.9 nT There was a geoeffective coronal hole at western equator, while the others at north pole, eastern equator, south pole and south-east were not geoeffective.

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

Ionospheric Activity

Ionosphere was in Quiet conditions for the last 24 hours.

There was depression of foF2 lower than 30% of its median value for 15 minutes for last 24 hours. There was increment of fmin more than 30% of its median value for 210 minutes for the last 24 hours. There was The Spread-F occurred For 330 for the last 24 hours. There was The Sporadic-E occurred in the night and daytime for 435 minutes with foEs value exceeded the foF2 for last 24 hours.

S4 index values (condition of ionospheric scintillation ) was less than 0.8 over Pontianak is predicted Moderate Level

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

 

Navigation

Based on TEC and scintilation , the error of the single frequency GPS positioning for the last 24 hours was in Light level.

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

HF Radio Communication

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

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

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

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.

The 10 MeV proton flux remained quiet over the past 24 hours. Based on these conditions, the 10 MeV proton flux is predicted to remain quiet for the next 24 hours.